CN103313399A - Method for supporting carrier aggregation and use equipment (UE) - Google Patents
Method for supporting carrier aggregation and use equipment (UE) Download PDFInfo
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- CN103313399A CN103313399A CN2012100654694A CN201210065469A CN103313399A CN 103313399 A CN103313399 A CN 103313399A CN 2012100654694 A CN2012100654694 A CN 2012100654694A CN 201210065469 A CN201210065469 A CN 201210065469A CN 103313399 A CN103313399 A CN 103313399A
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- stag
- scell
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- timing reference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0078—Timing of allocation
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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
Abstract
The invention provides a method for supporting carrier aggregation and corresponding use equipment (UE). According to the invention, the method comprises the following steps: confirming a failing RA (random access) on an Scell (subsidiary cell) of an sTAG (subsidiary timing advance group), so that the timing reference of UL (uplink) transmission of the sTAG is confused; stopping or suspending the UL transmission on all the Scells of the sTAG, or continuing the UL transmission on all the Scells of the sTAG by adopting corresponding measures.
Description
Technical field
The present invention relates to the communications field, more specifically, the present invention relates to support method and the subscriber equipment of carrier aggregation.
Background technology
According to current standardization effort, in advanced Long Term Evolution project (LTE-A) R11, will support Scell (from the residential quarter) to insert RA at random, and up to the present, in 3GPP, reach following agreement:
--support only to comprise Scell from timing advance group (sTAG);
--in sTAG, up UL emission timing reference is a Scell who belongs to sTAG, and Pcell can only be the UL emission timing reference of main timing advance group (pTAG);
--for sTAG, synchronous between Node B (eNB) and the subscriber equipment (UE) that UL emission timing reference should be in evolution, this determines by the RA process, this means, if eNB wishes to indicate the UL emission timing reference of sTAG, must trigger the RA process at the Scell of correspondence so, and the relevant descending one-tenth sub-carrier CC of this Scell will be considered to the UL emission timing reference of this sTAG, launch to guarantee correct UL;
--if the Scell that is carrying out RA is deactivated, and for example, because the deexcitation timer expires, will interrupt the RA process so.
Therefore, have two kinds of RA failures on the Scell at least.
First kind: during its receive window, UE can not receive accidental access response (RAR);
Second kind: the Scell that is carrying out RA is deactivated.
In addition, according to current standardization effort, the RA failure on Scell has been discussed, and the agreement below having reached:
--medium access control (MAC) layer will can not notify Radio Resource control (RRC) layer this RA failure, therefore not trigger Radio Link Failure RLF.
--UE does not notify eNB this RA failure, and eNB will be by oneself detecting this RA failure.This means that after UE recognizes a period of time of this RA failure eNB just can detect this RA failure.
The relevant problem of another one is that UE UL adjusts launch time.
In the UE side, two kinds of situations about adjusting launch time about the UL of a sTAG are arranged:
Situation 1: the TAC (timing advance order) according to receiving, carry out adjusting launch time about the UL of this sTAG.
Situation 2: the descending time of reception according to launching the Seell of timing reference as the UL of this sTAG, carry out autonomous UL adjustment process launch time (for example, carrying out at two TAC reception periods) about this sTAG.
Situation 2 means that during the normal UL emission of UE, for UE, UL emission timing reference is very important.RA failure will make UE become to obscure, do not know which Scell among this sTAG is only the UL emission timing reference of this sTAG.
Current, need to solve under the situation of RA failure, how UE handles the UL emission of corresponding sTAG.
Summary of the invention
According to an aspect of the present invention, proposed a kind of method of supporting carrier aggregation, having comprised: determined that one is inserted the RA failure from one of timing advance group sTAG at random from the Scell of residential quarter, obscure thereby the up UL emission timing reference of described sTAG produced; And
Stop or terminating in UL emission on all Scell of this sTAG, or by taking corresponding measure, continue the UL emission on all Scell of this sTAG.
According to another aspect of the present invention, a kind of user equipment (UE) of supporting carrier aggregation has been proposed, comprise: determine device, be used for to determine that from timing advance group sTAG one inserts the RA failure at random from the Scell of residential quarter, obscure thereby the up UL emission timing reference of described sTAG produced; And control device, be used for or stop or terminating in UL emission on all Scell of this sTAG, or by taking corresponding measure, continue the UL emission on all Scell of this sTAG.
Description of drawings
By below in conjunction with the description of the drawings, and along with understanding more comprehensively of the present invention, other purposes of the present invention and effect will become clear more and easy to understand, wherein:
Fig. 1 shows the wireless communication system that the present invention can implement therein;
Fig. 2 shows the flow chart according to the method for the support carrier aggregation of an embodiment of the invention;
Fig. 3 shows the block diagram according to the user equipment (UE) of the support carrier aggregation of an embodiment of the invention.
In all above-mentioned accompanying drawings, identical label represents to have identical, similar or corresponding feature or function.
Embodiment
Describe embodiments of the present invention in detail below with reference to accompanying drawing.
Fig. 1 shows the wireless communication system 100 that the present invention can implement therein.For example, in this wireless communication system 100, introduced carrier aggregation CA characteristic.
In the system that has introduced the CA characteristic, UE uplink and downlink can pass through a plurality of one-tenth sub-carrier CC respectively, communicate with eNB.If at a UE, eNB thinks that these CC can share a timing advance TA value, be eNB as long as adjust the TA value with reference to any one up transmission signal among these CC, this TA value can be used by these CC, thinks that then these CC belong to a timing advance group TAG.
When UE set up the RRC connection for the first time, eNB was only to UE configuration a Serving cell, i.e. main plot (Pcell).The carrier wave of Pcell is called principal component carrier wave (PCC).
According to considerations such as load, QoS demands, eNB can dispose one or more extra-services residential quarter to UE, i.e. from the residential quarter (Scell).The carrier wave of Scell is called from becoming sub-carrier (SCC).
That is to say that UE has only a Pcell, in Frequency Division Duplexing (FDD) (FDD) system, this Pcell has only a UL CC and a descending DL CC.A UE can have one or more Scell, and each Scell also has only a UL CC and/or a DL CC.Certainly, in time division duplex (TDD) system, Pcell and Scell have only a carrier wave, are used for uplink and downlink.
In addition, UE has only a pTAG, and this pTAG comprises Pcell, 0 or 1 or more Scell.And UE can have 0 or one or more sTAG, and a sTAG can have one or more Scell.
That is to say that the TAG that the CC of Pcell belongs to is pTAG, TAG in addition is sTAG.
As shown in Figure 1, as an example, wireless communication system 100 comprises an eNB 110 and a UE 120.Certainly, those skilled in the art will appreciate that system 100 can also comprise more eNB 110 and the UE 120 of more number.
UE 120 can be mobile phone, panel computer, notebook computer, desktop computer, PDA(Personal Digital Assistant) etc.In addition, between eNB 110 and UE 120, have Pcell 130 and 4 Scell 140-1,140-2,140-3,140-4.Certainly, those skilled in the art will appreciate that the number of Scell can be more or less, different cell can have different paths.
Here, be without loss of generality, suppose that Scell 140-1, Scell 140-2 and Scell 140-3 belong to sTAG 1, and Scell 140-4 belong to sTAG 2.
In LTE-A R10, RA only carries out at Pcell, and when Pcell RA fails, will trigger RRC and rebulid.Yet, for LTE-A R11, with the RA that carries out on the Scell, to support many TA scene.
According to current standardization effort, for pTAG, Pcell will be UL emission timing reference.RA on the Scell of pTAG is used for just determining which TAG this Scell belongs to.Therefore, the RA on the Scell of pTAG fails, and does not influence the upstream operation of pTAG.Therefore, the Scell on this pTAG is considered to still and the eNB uplink synchronous.
If eNB thinks that the current UL emission timing reference of a sTAG is bad, for example, quality of wireless channel is poor, or current UL timing reference may just will not be released, be deactivated, can use the RA on the Scell of sTAG so, carry out new UL emission timing reference indication.If the failure of the RA on the new Scell of sTAG, UE will not know which Scell is the new UL emission timing reference of this sTAG so, and this can influence UE and adjust operation launch time about the autonomous UL of described sTAG, and may cause uplink interference to other UE potentially.
Fig. 2 shows the flow chart according to the method for the support carrier aggregation of an embodiment of the invention.
As shown in Figure 2, described method 200 comprises step S210: determine that one is inserted the RA failure from one of timing advance group sTAG at random from the Scell of residential quarter, obscure thereby the up UL emission timing reference of described sTAG produced; And step S220: or stop or terminating in UL emission on all Scell of this sTAG, or by taking corresponding measure, continue the UL emission on all Scell of this sTAG.
With reference to accompanying drawing 1, be without loss of generality, suppose the RA failure on the Scell 1 of sTAG 1.
As mentioned above, after the RA failure on the Scell 1 that determines sTAG 1, stop or terminating in all Scell 1, Scell 2 and the emission of the UL on the Scell 3 of this sTAG 1, by taking corresponding measure, continue all Scell 1, Scell 2 and the emission of the UL on the Scell 3 at this sTAG 1.
RA failure comprises following any:
UE can not be during receive window, receiving random access response RAR;
The described Scell that is carrying out RA is deactivated.
That is to say that when UE can not receive corresponding accidental access response RAR during receive window, the described Scell 1 that is perhaps carrying out RA is deactivated, determine this sTAG so
RA failure on this Scell 1 of 1.
Under the situation of RA failure on this Scell 1 that determines this sTAG 1, by stopping or ending all Scell 1, SceU 2 and the emission of the UL on the Scell 3 of this sTAG 1, can avoid the potential interference to other UE.This can stop or the corresponding timing advance timer (TAT:timeAlignmentTimer) of stopping running is realized by UE.That is to say that when the RA failure took place on the Scell 1 of sTAG 1, UE must end or corresponding TAT out of service, stop at all Scell 1, the Scell 2 of this sTAG 1, the UL emission of Scell 3.Based on this solution, with all Scell 1 of this sTAG 1, the UL emission of Scell 2, Scell3 can not take place, therefore do not have the potential interference to other UE.
According to current standardization effort, RA failure can not trigger RRC and connects and rebulid on Scell.The RA failure means about the UL emission timing reference indication purpose of sTAG unsuccessful.As mentioned above, UE will follow the tracks of the descending time of reception as the Scell of the UL emission timing reference of a sTAG, with during normal UL emission, adjust its launch time.The RA failure will cause UE not know that the UL emission timing reference of this sTAG is which Scell of this sTAG, and therefore influence the UL firing operation about this sTAG of UE.
According to an embodiment of the invention, described corresponding measure comprises a kind of in first measure and second measure.
Wherein first measure comprises that the UL emission timing reference of stopping using described sTAG 1 carries out user equipment (UE) about autonomous UL adjustment process launch time of described sTAG 1.
As mentioned above, original, the descending time of reception according to the UL of described sTAG 1 launches timing reference carries out UE about autonomous UL adjustment process launch time of described sTAG 1.According to first measure, stop using the UL emission timing reference of described sTAG 1 to carry out user equipment (UE) about autonomous UL adjustment process launch time of described sTAG 1.This means that also UE only according to the TAC that receives, carries out adjusting launch time about the UL of this sTAG 1, and therefore can proceed the up emission of this sTAG 1.
Wherein second measure comprises following any:
A) use the Scell1 of this RA failure as the UL emission timing reference of described sTAG 1, carry out UE about autonomous UL adjustment process launch time of described sTAG 1;
B) use the UL of described sTAG 1 before the RA of this failure to launch timing reference (for example Scell 2), carry out UE about autonomous UL adjustment process launch time of described sTAG 1;
C) use the Scell of this sTAG 1 as the UL emission timing reference of described sTAG 1, carry out UE about autonomous UL adjustment process launch time of described sTAG 1, for example, use the activation Scell (for example Scell 3) of this sTAG 1 as the UL emission timing reference of described sTAG 1, carry out UE about autonomous UL adjustment process launch time of described sTAG 1.
According to second measure, UE can continue to follow the tracks of the corresponding UL emission timing reference of sTAG 1, carries out UE about autonomous UL adjustment process launch time of described sTAG 1, and therefore can proceed the up emission of this sTAG 1.
In the second all measures, second measure of A kind is preferred, because according to this A kind second measure, UE launches the timing reference record with the UL that eNB has identical sTAG 1.
In addition, have 1 of sTAG under the situation of a Scell, second measure comes down to identical second measure of A kind with the B kind.
Can be according to the UL emission timing reference according to sTAG, carry out UE about autonomous UL adjustment process launch time of the described sTAG influence degree to system, determine to stop or terminating in UL emission on all Scell of this sTAG, still by taking corresponding measure, continue the UL emission on all Scell of this sTAG.If there is not correct UL emission timing reference, will cause serious uplink interference to other UE, determine so to stop or terminating in UL emission on all Scell of this sTAG.On the other hand, if UE is not an important factor about autonomous UL adjustment process launch time of described sTAG, particularly under the situation in the short time interval, so by taking corresponding measure, continue the UL emission on all Scell of this sTAG.Wherein first measure makes UE produce in the time range of the weak point of obscuring at the UL of this sTAG emission timing reference, stop to follow the tracks of the time of reception of the UL emission timing reference of this sTAG, and second measure provides the interim UL emission timing reference of this sTAG to UE, satisfying autonomous UL adjustment process launch time of UE, thereby UE can continue the up emission of this sTAG.
According to an embodiment of the invention, method 200 also comprises step S230: another Scell (for example Scell 2) that determines on the described Scell 1 of described sTAG 1 RA success again or described sTAG 1 goes up the RA success; And step S240: recover all Scell 1, Scell 2 and the emission of the UL on the Scell 3 at this sTAG 1, and use the Scell of this RA success as the UL emission timing reference of described sTAG 1, carry out UE about autonomous UL adjustment process launch time of described sTAG 1.
Also notice at eNB under the situation of RA failure of Scell 1 of this sTAG 1, on the described Scell 1 of this sTAG 1, carry out RA again or carry out RA at another Scell (for example Scell 2) of described sTAG1.
Fig. 3 shows the block diagram according to the user equipment (UE) of the support carrier aggregation of an embodiment of the invention.
As shown in Figure 3, described UE 300 comprises: determine device 310, be used for to determine that from timing advance group sTAG one inserts the RA failure at random from the Scell of residential quarter, obscure thereby the up UL emission timing reference of described sTAG produced; And control device 320, be used for or stop or terminating in UL emission on all Scell of this sTAG, or by taking corresponding measure, continue the UL emission on all Scell of this sTAG.
According to an embodiment of the invention, described corresponding measure comprises a kind of in first measure and second measure,
Wherein first measure comprises that the UL emission timing reference of stopping using described sTAG carries out user equipment (UE) about autonomous UL adjustment process launch time of described sTAG;
Second measure comprises following any:
Use the Scell of this RA failure as the UL emission timing reference of described sTAG, carry out UE about autonomous UL adjustment process launch time of described sTAG;
The UL emission timing reference of use described sTAG before the RA of this failure carries out UE about autonomous UL adjustment process launch time of described sTAG;
Use the Scell of this sTAG as the UL emission timing reference of described sTAG, carry out UE about autonomous UL adjustment process launch time of described sTAG.
According to an embodiment of the invention, the descending time of reception according to the UL of described sTAG launches timing reference carries out UE about autonomous UL adjustment process launch time of described sTAG.
According to an embodiment of the invention, use the activation Scell of this sTAG as the UL emission timing reference of described sTAG, carry out UE about autonomous UL adjustment process launch time of described sTAG.
According to an embodiment of the invention, UE carries out between two early timing orders about autonomous UL adjustment process launch time of described sTAG, and wherein said early timing order is used for adjusting UE about the UL launch time of described sTAG.
According to an embodiment of the invention, described definite device 310 be used for to determine also on the described Scell of described sTAG that another Scell of RA success again or described sTAG goes up the RA success; And described control device 320 also be used for to recover the UL emission on all Scell of this sTAG, and uses the Scell of this RA success as the UL emission timing reference of described sTAG, carries out UE about autonomous UL adjustment process launch time of described sTAG.
According to an embodiment of the invention, RA failure comprises following any:
UE can not be during receive window, receiving random access response RAR;
The described Scell that is carrying out RA is deactivated.
According to an embodiment of the invention, by stopping or the timing advance timer TAT of this sTAG that stops running, stop or terminating in UL emission on all Scell of this sTAG.
Should be noted that for the present invention is more readily understood top description has been omitted to be known for a person skilled in the art and may to be essential some ins and outs more specifically for realization of the present invention.
Those skilled in the art it is also understood that and the invention is not restricted to step described above, and the present invention also comprises combination that step described above is carried out, order conversion etc.Final scope of the present invention is defined by the appended claims.
Therefore; selecting and describing execution mode is in order to explain principle of the present invention and practical application thereof better; and those of ordinary skills are understood, under the prerequisite that does not break away from essence of the present invention, all modifications and change all fall within protection scope of the present invention defined by the claims.
Claims (16)
1. method of supporting carrier aggregation comprises:
Determine that one is inserted the RA failure from one of timing advance group sTAG at random from the Scell of residential quarter, obscure thereby the up UL emission timing reference of described sTAG produced; And
Stop or terminating in UL emission on all Scell of this sTAG, or by taking corresponding measure, continue the UL emission on all Scell of this sTAG.
2. method according to claim 1,
Wherein said corresponding measure comprises a kind of in first measure and second measure,
Wherein first measure comprises that the UL emission timing reference of stopping using described sTAG carries out user equipment (UE) about autonomous UL adjustment process launch time of described sTAG;
Second measure comprises following any:
Use the Scell of this RA failure as the UL emission timing reference of described sTAG, carry out UE about autonomous UL adjustment process launch time of described sTAG;
The UL emission timing reference of use described sTAG before the RA of this failure carries out UE about autonomous UL adjustment process launch time of described sTAG;
Use the Scell of this sTAG as the UL emission timing reference of described sTAG, carry out UE about autonomous UL adjustment process launch time of described sTAG.
3. method according to claim 2 wherein according to the descending time of reception of the UL emission timing reference of described sTAG, is carried out UE about autonomous UL adjustment process launch time of described sTAG.
4. method according to claim 2 wherein uses the activation Scell of this sTAG as the UL emission timing reference of described sTAG, carries out UE about autonomous UL adjustment process launch time of described sTAG.
5. method according to claim 2, wherein UE carries out between two early timing orders about autonomous UL adjustment process launch time of described sTAG, and wherein said early timing order is used for adjusting UE about the UL launch time of described sTAG.
6. method according to claim 1 also comprises:
Another Scell that determines on the described Scell of described sTAG RA success again or described sTAG goes up the RA success; And
The UL emission of recovery on all Scell of this sTAG, and use the Scell of this RA success as the UL emission timing reference of described sTAG, carry out UE about autonomous UL adjustment process launch time of described sTAG.
7. method according to claim 1, wherein the RA failure comprises following any:
UE can not be during receive window, receiving random access response RAR;
The described Scell that is carrying out RA is deactivated.
8. method according to claim 1 wherein by stopping or the timing advance timer TAT of this sTAG that stops running, stops or terminating in UL emission on all Scell of this sTAG.
9. user equipment (UE) of supporting carrier aggregation comprises:
Determine device, be used for to determine that from timing advance group sTAG one inserts the RA failure at random from the Scell of residential quarter, obscure thereby the up UL emission timing reference of described sTAG produced; And
Control device is used for or stops or terminating in UL emission on all Scell of this sTAG, or by taking corresponding measure, continues the UL emission on all Scell of this sTAG.
10. UE according to claim 9,
Wherein said corresponding measure comprises a kind of in first measure and second measure,
Wherein first measure comprises that the UL emission timing reference of stopping using described sTAG carries out user equipment (UE) about autonomous UL adjustment process launch time of described sTAG;
Second measure comprises following any:
Use the Scell of this RA failure as the UL emission timing reference of described sTAG, carry out UE about autonomous UL adjustment process launch time of described sTAG;
The UL emission timing reference of use described sTAG before the RA of this failure carries out UE about autonomous UL adjustment process launch time of described sTAG;
Use the Scell of this sTAG as the UL emission timing reference of described sTAG, carry out UE about autonomous UL adjustment process launch time of described sTAG.
11. UE according to claim 10 wherein according to the descending time of reception of the UL of described sTAG emission timing reference, carries out UE about autonomous UL adjustment process launch time of described sTAG.
12. UE according to claim 10 wherein uses the activation Scell of this sTAG as the UL emission timing reference of described sTAG, carries out UE about autonomous UL adjustment process launch time of described sTAG.
13. UE according to claim 10, wherein UE carries out between two early timing orders about autonomous UL adjustment process launch time of described sTAG, and wherein said early timing order is used for adjusting UE about the UL launch time of described sTAG.
14. UE according to claim 9, wherein:
Described definite device be used for to determine also on the described Scell of described sTAG that another Scell of RA success again or described sTAG goes up the RA success; And
The UL that described control device also is used for recovering on all Scell of this sTAG launches, and uses the Scell of this RA success as the UL emission timing reference of described sTAG, carries out UE about autonomous UL adjustment process launch time of described sTAG.
15. UE according to claim 9, wherein RA failure comprises following any:
UE can not be during receive window, receiving random access response RAR;
The described Scell that is carrying out RA is deactivated.
16. UE according to claim 9 wherein by stopping or the timing advance timer TAT of this sTAG that stops running, stops or terminating in UL emission on all Scell of this sTAG.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210065469.4A CN103313399B (en) | 2012-03-13 | 2012-03-13 | Support method and the subscriber equipment of carrier aggregation |
| PCT/IB2013/000539 WO2013136173A1 (en) | 2012-03-13 | 2013-03-04 | Method and user equipment for supporting carrier aggregation |
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| CN201210065469.4A CN103313399B (en) | 2012-03-13 | 2012-03-13 | Support method and the subscriber equipment of carrier aggregation |
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| CN103313399A true CN103313399A (en) | 2013-09-18 |
| CN103313399B CN103313399B (en) | 2016-03-23 |
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| CN201210065469.4A Active CN103313399B (en) | 2012-03-13 | 2012-03-13 | Support method and the subscriber equipment of carrier aggregation |
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| WO2018132953A1 (en) * | 2017-01-17 | 2018-07-26 | 华为技术有限公司 | Uplink data transmission method, terminal apparatus, and network apparatus |
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| WO2015076639A1 (en) * | 2013-11-25 | 2015-05-28 | 엘지전자 주식회사 | Method for sending report to base station by terminal and device therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118801A (en) * | 2011-03-31 | 2011-07-06 | 电信科学技术研究院 | Method and device for unlink transmission in multicarrier aggregation system |
| CN201967138U (en) * | 2009-11-19 | 2011-09-07 | 交互数字专利控股公司 | Wireless emitting/receiving unit |
| US20120008600A1 (en) * | 2010-01-08 | 2012-01-12 | Interdigital Patent Holdings, Inc. | Maintaining time alignment with multiple uplink carriers |
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- 2012-03-13 CN CN201210065469.4A patent/CN103313399B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201967138U (en) * | 2009-11-19 | 2011-09-07 | 交互数字专利控股公司 | Wireless emitting/receiving unit |
| US20120008600A1 (en) * | 2010-01-08 | 2012-01-12 | Interdigital Patent Holdings, Inc. | Maintaining time alignment with multiple uplink carriers |
| CN102118801A (en) * | 2011-03-31 | 2011-07-06 | 电信科学技术研究院 | Method and device for unlink transmission in multicarrier aggregation system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018132953A1 (en) * | 2017-01-17 | 2018-07-26 | 华为技术有限公司 | Uplink data transmission method, terminal apparatus, and network apparatus |
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| WO2013136173A1 (en) | 2013-09-19 |
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| EP4195522A1 (en) | Data transmission method, terminal device, and network device |
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Address after: Pudong New Area, Pudong Jinqiao Ning Bridge Road, No. 388, No. Co-patentee after: Alcatel Optical Networks Israe Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Shanghai, Pudong Jinqiao Ning Bridge Road, No. 388, No. Co-patentee before: Alcatel Optical Networks Israe Patentee before: Shanghai Alcatel-Lucent Co., Ltd. |