CN104221453A - Timing advance group reconfiguration method and device - Google Patents

Timing advance group reconfiguration method and device Download PDF

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Publication number
CN104221453A
CN104221453A CN201280072292.9A CN201280072292A CN104221453A CN 104221453 A CN104221453 A CN 104221453A CN 201280072292 A CN201280072292 A CN 201280072292A CN 104221453 A CN104221453 A CN 104221453A
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scell
base station
message
sent
rar message
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CN201280072292.9A
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CN104221453B (en
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徐海博
常宁娟
王轶
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Fujitsu Ltd
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Fujitsu Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal

Abstract

Provided are a timing advance group reconfiguration method and device. The method comprises: through a random access response (RAR) message about a random access procedure, a base station notifying user equipment (UE) that the random access procedure is being used for conducting uplink synchronization detection on a sub-serving cell (SCell) of the UE; and after reconfiguring the SCell of the UE to a new TAG, the base station sending to the UE a TAC MAC CE, so that the UE determines a TA value used when the UE sends an uplink signal over the SCell according to the random access response message and/or the TAC MAC CE. The method and device in the embodiments of the present invention ensure that UE performs correct processing after receiving a random access response (RAR) sent by a base station, thereby avoiding the problem of non-synchronization when uplink signals are sent.

Description

Timing advance group reconfiguration method and device
The method and apparatus technical field that a kind of Timing Advance group is matched somebody with somebody again
The present invention relates to the communications field, the method and apparatus that more particularly to a kind of Timing Advance group is matched somebody with somebody again.Background technology
In enhanced Long Term Evolution (LTE-A:LTE-Advanced) in the Rel-10 of system, carrier aggregation technology is introduced in order to provide higher transmission rate for terminal, and defines 5 kinds of deployment scenarios of carrier aggregation technology, as shown in figure la- figures le.
In LTE-A Rel-10, for up-link, the carrier aggregation in a band support.Simultaneously for scene 4 (figure Id) and scene 5 (scheming le), i.e., the different scene of the receiving station of the upward signal of different carrier waves does not support the carrier aggregation technology of up-link.3GPP (The 3rd Generation Partnership Project, third generation partner program）The assessment result of 4th working group is proved, for being received in the same website of base station side, and the different carrier waves in same frequency range, and user equipment can carry out the transmission of upward signal using identical upstream time lead on its carrier wave.Therefore, in LTE-A Rel-10, when multiple serving cells for user device configuration, in order to obtain upstream time lead, user equipment only needs to carry out random access procedure in main serving cell.Once having obtained the Timing Advance in main serving cell, other times serving cell can be used and main serving cell identical Timing Advance.
In LTE-A Rel-11, carrier aggregation technology is further enhanced.Wherein enhanced one side is that, for up-link, can support the carrier aggregation in different frequency range, while scene 4 and scene 5 are also required to support up-link carrier polymerization.So, the problem of introducing one newly, i.e.,：Base station can be different for the upstream time lead of the serving cell of user device configuration.Assessment by the working groups of 3GPP the 4th shows, occurs that the upstream time lead of different serving cells is different under following three kinds of scenes：
(1) under scene 2 (figure lb) and scene 3 (figure lc), when the multiple serving cells for being allocated to user equipment are the carrier wave in different frequency range, under 2%-3% probability scenarios, the upstream time lead of these serving cells can be differed；
(2) under scene 4, when the uplink receiving website for the multiple serving cells for being allocated to user equipment is respectively Macro eNB (macro base stations）Standing grain B RRH (Remote Radio Head, distally without the end of a thread）When, the upstream time lead of the serving cell of different receiving stations can be differed； (3) under scene 5, when the uplink receiving website for the multiple serving cells for being allocated to user equipment is respectively Macro eNB (macro base stations）With repeater (repeaters）When, the upstream time lead of the serving cell of different receiving stations can be differed.
When the serving cell for being allocated to user equipment has multiple upstream time leads, for the ease of the maintenance and management of user equipment upstream time lead, reduce the complexity of user equipment, the backwards compatibility with Rel-10 is kept simultaneously, and the working groups of 3GPP second define Timing Advance group（Timing advance group, TAG) concept.There is identical descending timing reference and the serving cell with identical upstream time lead belongs to same TAG.TAG comprising main serving cell is defined as pTAG.TAG only comprising time serving cell is defined as sTAG.When base station is user equipment newly one serving cell of configuration, need the frequency range according to belonging to this serving cell, the receiving station of this serving cell judges the TAG belonging to this serving cell, is then that user equipment is configured to affiliated TAG by RRC signaling.
For secondary serving cell, needed when in initial configuration in addition to being configured to a correct TAG, in some cases, the TAG where it needs to change, and at this moment needs to be reconfigured to a correct TAG.
For example, for scene 5, Fig. 2 refer to, base station be user device configuration main serving cell fl, secondary serving cell f2.And they belong to same frequency range.Situation 1:At the T1 moment, terminal is located at A points.Now secondary serving cell is identical with the receiving station of main serving cell, is consequently belonging to same TAG.At the T2 moment, user equipment is moved to repeater（Repeater in the range of) covering, now the receiving station of the upward signal on secondary serving cell is changed into repeater, different from the receiving station of main serving cell.Therefore, secondary serving cell is not suitable for belonging to same pTAG with main serving cell.Now need to be reconfigured to a new sTAG.Situation 2:With situation 1 on the contrary, user equipment is from repeater（Repeater macro base station is moved in the range of) covering（Macro eNB) covering in the range of.In this case, secondary serving cell needs to be reconfigured to pTAG from STAG.
Inventor has found during the present invention is realized, when base station is by detecting UE (User Equipment, user equipment）In SCell (secondary serving cells）On upward signal, such as PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel）Signal or SRS (Sounding Reference Signal, detection reference signal）Signal, suspects that the UE SCell needs to change its Timing Advance group belonged to（TAG after), UE can be triggered first Preamble (lead codes are sent on the SCell）, then judge whether the UE SCell needs to change Timing Advance group and change which Timing Advance group arrived really according to Preamble.After base station receives the Preamble of UE transmissions, base station needs to reply accidental access response to UE.And UE is received after the accidental access response, according to current agreement, next UE belongs to same TAG in the SCell and with the SCell Other Serving Cell (serving cells）On all by the TA (Timing Advances in the accidental access response）Value sends upward signal.But, the other Serving cell caused in the TAG upward signal can not be kept the uplink synchronous with other UE by such processing, so as to interfere, cause loss of data.
It should be noted that the introduction to technical background is intended merely to the convenient explanation clear, complete to technical scheme progress above, and facilitates the understanding of those skilled in the art and illustrate.Can not be merely because these schemes be set forth in the background section of the present invention and think that above-mentioned technical proposal is known to those skilled in the art.The content of the invention
The purpose of the embodiment of the present invention is to provide the method and apparatus that a kind of Timing Advance group is matched somebody with somebody again, solve in the case of the TAT operations of the TAG belonging to SCell, after base station triggers UE sends Preamble on SCell, how to ensure that UE makes correct processing after accidental access response is received, so that asynchronous problem when avoiding sending upward signal.
First aspect according to embodiments of the present invention there is provided a kind of method that Timing Advance group is matched somebody with somebody again, wherein, methods described includes：
The accidental access response that base station passes through random access procedure（RAR) message, notifying user equipment（UE) random access procedure is the secondary serving cell for carrying out the UE（SCell uplink synchronous detection)；
Base station sends Timing Advance order medium education control unit after the SCell of the UE is fitted on into a new TAG again to the UE（TAC MAC CE), so that UE is according to the accidental access response message and/or the TAC MAC CE, determine used TA values when it sends upward signal on the SCell.
Second aspect according to embodiments of the present invention there is provided a kind of method that Timing Advance group is matched somebody with somebody again, wherein, methods described includes：
UE judges the Timing Advance timer of the TAG belonging to the SCell after the RAR message for its SCell is received（TAT) whether it is currently running；
If it is, the UE determines whether the random access procedure is that the uplink synchronous for being directed to the SCell is detected according to the RAR message；
If, then the UE ignores the UL grant in RAR, stop on the SCell and send SRS and the re-transmission of up non-self-adapting, and in base station the SCell to be fitted on to a new TAG again after, the TAC MAC CE sent according to the RAR message and/or the base station received, determine used TA values when it sends upward signal on the SCell. The third aspect according to embodiments of the present invention there is provided a kind of method that Timing Advance group is matched somebody with somebody again, wherein, methods described includes：
Base station is after triggering UE sends Preamble on SCell, before RAR message is sent to the UE, and send RRC to the UE is fitted on other TAG again with signaling by the SCell again;
Base station sends RAR message or TAC after the RRC for receiving UE feedbacks matches somebody with somebody completion signaling again to the UE
MAC CE, used TA values when determining that it sends upward signal on the SCell according to the RAR or the TAC MAC CE so as to UE.
Fourth aspect according to embodiments of the present invention there is provided a kind of method that Timing Advance group is matched somebody with somebody again, wherein, methods described includes：
After UE sends Preamble according to the triggering of base station on SCell, if before RAR message is received, the RRC that the SCell is fitted on to other TAG again for receiving the base station transmission matches somebody with somebody signaling again, the RRC indicates the SCell being fitted on other TAG (including existing TAG or new TAG) again with signaling again, then the UE is stopped on the SCell and is sent Preamble, and discharge when Preamble of the base station on the SCell is triggered is sent for the UE special Preamble distributed and special Physical Random Access Channel resource；If the RRC is again that the SCell is fitted on into a new TAG with signaling again, then the UE is after the matching somebody with somebody of the new TAG is completed again, the AR message or TAC MAC CE sent according to the base station received, determines used TA values when it sends upward signal on the SCell.
There is provided a kind of base station in terms of according to embodiments of the present invention the 5th, wherein, the base station includes：First transmitting element, it sends AR message to UE in the random access procedure, by random access procedure described in RAR message notice UE is detected for carrying out the SCell of UE uplink synchronous；
Second transmitting element, it by the SCell of the UE after a new TAG is fitted on again, TAC MAC CE are sent to the UE, so that UE is according to the AR message standing grain Π/or described TAC MAC CE, used TA values when it sends upward signal on the SCell are determined.
There is provided a kind of UE in terms of according to embodiments of the present invention the 6th, wherein, the UE includes：Judging unit, it judges the Timing Advance timer of the TAG belonging to the SCell after the RAR message for its SCell is received（TAT) whether it is currently running；
First determining unit, it determines whether the random access procedure is that the uplink synchronous for being directed to the SCell is detected when the judged result of the judging unit is to be according to the RAR message；
Second determining unit, it is to be directed to the SCell that it is defined as the random access procedure in first determining unit Uplink synchronous detection when, the SCell to be fitted on to a new TAG in base station again after, the TAC MAC CE sent according to the RAR message and/or the base station received, determine used TA values when it sends upward signal on the SCell；
First processing units, it ignores the UL grant in RAR, stops on the SCell and send SRS and the re-transmission of up non-self-adapting when it is the uplink synchronous detection for the SCell that first determining unit, which is defined as the random access procedure,.
There is provided a kind of base station in terms of according to embodiments of the present invention the 7th, wherein, the base station includes：First transmitting element, it is after the base station triggers UE sends Preamble on SCell, before RAR message is sent to the UE, and send RRC to the UE is fitted on other TAG again with signaling by the SCell again;
Second transmitting element, its RRC that UE feedbacks are received in the base station matches somebody with somebody again to be completed after signaling, RAR message or TAC MAC CE, used TA values when determining that it sends upward signal on the SCell according to the RAR or the TAC MAC CE so as to UE are sent to the UE.
Eighth aspect according to embodiments of the present invention there is provided a kind of UE, wherein, the UE includes：Judging unit, it judges that the UE is sent after Preamble according to the triggering of base station on SCell, before RA message is received, the RRC that the SCell is fitted on to other TAG again for whether receiving the base station transmission matches somebody with somebody signaling again, and the RRC indicates the SCell being fitted on other TAG (including existing TAG or new TAG) again with signaling again;
Processing unit, it is in the judged result of the judging unit for when being, stop at and Preamble is sent on the SCell, and discharge when Preamble of the base station on SCell is triggered is sent for the UE special Preamble distributed and special Physical Random Access Channel resource；
Determining unit, it is when the RRC by the SCell again with signaling to be fitted on a new TAG again, after the matching somebody with somebody of the new TAG is completed again, the RAR message or TAC MAC CE sent according to the base station received, determines used TA values when the UE sends upward signal on the SCell.
9th aspect according to embodiments of the present invention, additionally provides a kind of communication system, wherein, the communication system includes the base station described in the 5th aspect and the user equipment described in the 6th aspect.
Tenth aspect according to embodiments of the present invention, additionally provides a kind of communication system, wherein, the communication system includes the base station described in the 7th aspect and the user equipment described in eighth aspect.
The tenth one side according to embodiments of the present invention is there is provided a kind of computer-readable program, wherein when performing the program in a base station, and the program causes computer to perform first aspect or the time described in the third aspect in the base station The method that lead group is matched somebody with somebody again.
12nd aspect according to embodiments of the present invention, there is provided a kind of storage medium for the computer-readable program that is stored with, wherein the computer-readable program causes computer to perform the method that first aspect or the Timing Advance group described in the third aspect are matched somebody with somebody again in a base station.
13rd aspect according to embodiments of the present invention, there is provided a kind of computer-readable program, wherein when performing the program in a user device, the program causes computer to perform the method that second aspect or the Timing Advance group described in fourth aspect are matched somebody with somebody again in the user equipment.
Fourteenth aspect according to embodiments of the present invention, there is provided a kind of storage medium for the computer-readable program that is stored with, wherein the computer-readable program causes computer to perform the method that second aspect or the Timing Advance group described in fourth aspect are matched somebody with somebody again in a user device.
The beneficial effect of the embodiment of the present invention is：Pass through the method and apparatus of the embodiment of the present invention, it is ensured that UE is receiving the accidental access response of base station transmission（RAR correct processing is made after), so as to avoid asynchronous problem when sending upward signal.
With reference to explanation hereinafter and accompanying drawing, only certain exemplary embodiments of this invention is disclose in detail, the principle for specifying the present invention can be in adopted mode.It should be understood that embodiments of the present invention are not so limited in scope.In the range of the spirit and terms of appended claims, embodiments of the present invention include many changes, modifications and equivalent.
Described for a kind of embodiment and/or the feature that shows can be used in same or similar mode in one or more other embodiments, it is combined with feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term " include/include " refers to the presence of feature, one integral piece, step or component when being used herein, but it is not precluded from the presence or additional of one or more further features, one integral piece, step or component.Brief description of the drawings
Many aspects of the present invention may be better understood with reference to following accompanying drawing.Part in accompanying drawing is not proportional drafting, and is intended merely to show the principle of the present invention.It may be exaggerated or minimized for the ease of showing and describing corresponding part in some parts of the present invention, accompanying drawing.The element and feature that element and feature described in a kind of accompanying drawing or embodiment of the present invention can be shown in one or more other accompanying drawings or embodiment are combined.In addition, in the accompanying drawings, similar label represents corresponding part in several accompanying drawings, and may be used to indicate the corresponding component used in more than one embodiment.In the accompanying drawings： Figure la- figures le is five kinds of deployment scenario schematic diagrames of carrier aggregation technology；
Fig. 2 is the Timing Advance group of first embodiment of the invention（TAG the method flow diagram) matched somebody with somebody again；Fig. 3 is the Timing Advance group of second embodiment of the invention（TAG the method flow diagram) matched somebody with somebody again；Fig. 4 is base station and the UE interaction diagrams of the method according to Fig. 2 and embodiment illustrated in fig. 3；Fig. 5 is the structural representation of RAR message；
Fig. 6 is the Timing Advance group of third embodiment of the invention（TAG the method flow diagram) matched somebody with somebody again；Fig. 7 is the Timing Advance group of fourth embodiment of the invention（TAG the method flow diagram) matched somebody with somebody again；Fig. 8 is base station and the UE interaction diagrams of the method according to Fig. 6 and embodiment illustrated in fig. 7；Fig. 9 is the composition schematic diagram of the base station of the embodiment of the present invention of corresponding diagram 2；
Figure 10 is the composition schematic diagram of the user equipment of the embodiment of the present invention of corresponding diagram 3；
Figure 11 is the composition schematic diagram of the base station of the embodiment of the present invention of corresponding diagram 6；
Figure 12 is the composition schematic diagram of the user equipment of the embodiment of the present invention of corresponding diagram 7.Embodiment
Referring to the drawings, by following specification, the foregoing and further feature of the embodiment of the present invention will be apparent.These embodiments are exemplary, are not limitations of the present invention.In order that those skilled in the art can easily understand that the principle and embodiment of the present invention, embodiments of the present invention are illustrated by taking the method that the Timing Advance group in the scene under the Rel-11 of lte-a system is matched somebody with somebody again as an example, it is to be understood that, the embodiment of the present invention is not limited to said system, and the other systems matched somebody with somebody again for being related to Timing Advance group are applicable.
Embodiment 1
The embodiments of the invention provide a kind of Timing Advance group（TAG the method) matched somebody with somebody again.Fig. 2 is the flow chart of this method, refer to Fig. 2, and this method includes：
Step 201:The accidental access response that base station passes through random access procedure（RAR) message, notifying user equipment (UE) described random access procedure is the secondary serving cell for carrying out the UE（SCell uplink synchronous detection)；
In one embodiment, in the RAR message that base station is sent to UE, TA command value is 0, to indicate that the random access procedure is detected for carrying out SCell uplink synchronous.In another embodiment, in the RAR message that base station is sent to UE, Reserved bit are 1, to indicate that the random access procedure is detected for carrying out SCell uplink synchronous.In another embodiment, in the RAR message that base station is sent to UE, T-CR TI Value be 0, with indicate the random access procedure be for carry out SCell uplink synchronous detect.
Now, UE is after such RAR message is received, know that base station can carry out matching somebody with somebody again for TAG to the SCell, but to avoid other Serving cell for belonging to same TAG with the SCell impacted, TA values will not be changed with regard to this RAR message sent according to base station, but do not carry out subsequent treatment on the SCell.Now, the UE SCell is remained in original TAG.
Step 202:Base station by the SCell of the UE after a new TAG is fitted on again, TAC MAC CE are sent to the UE, so that UE is according to the accidental access response message and/or the TAC MAC CE, used TA values when it sends upward signal on the SCell are determined.
In the present embodiment, the SCell of the UE is fitted on into a new TAG in base station again after, one relative value of Timing Advance in the new TAG is sent to by UE by TAC MAC CE, used TA values when value and/or the TA relative values in TA command of the UE before in RAR message determine that it sends upward signal on the SCell, the TAG that this completes the SCell matches somebody with somebody again.
In the present embodiment, because base station indicates the random access procedure by RAR message detected for carrying out SCell uplink synchronous, UE will not be handled after the RAR message is received according to existing protocol（As described by background technology）, thus avoid and belong to a TAG other Serving cell also according to the TA values in the RA message with the SCell to send upward signal, the problem of the caused uplink synchronous that can not be kept with other UE.
Embodiment 2
The embodiment of the present invention additionally provides a kind of method that Timing Advance group is matched somebody with somebody again, and this method is the processing of UE sides corresponding with the method for embodiment 1.Fig. 3 is the flow chart of this method, refer to Fig. 3, and this method includes：
Step 301:UE judges the Timing Advance timer of the TAG belonging to the SCell after the AR message for its SCell is received（TAT) whether it is currently running, if it is, step 302 is performed, otherwise according to the regulation of current agreement to TA command and UL the grant processing in the RAR message.
Step 302:UE determines whether the random access procedure is that the uplink synchronous for being directed to the SCell is detected according to the RAR message, if, step 303 is then performed, otherwise according to the regulation of current agreement to TA command and UL the grant processing in the RAR message.
Step 303:The SCell to be fitted on to a new TAG in base station by UE again after, the TAC MAC CE sent according to the RAR message and/or the base station received determine used TA values when it sends upward signal on the SCell. In step 302, the method of correspondence embodiment 1, if the value of the TA command in the RAR message is 0, or the value of the Reserved bit in the AR message is 1, or the value of the T-CR TI in the RAR message is 0, then the UE determines that the random access procedure is the uplink synchronous detection for the SCell.
Wherein, if the TA command in the RAR message are 0, then the UE determines that the random access procedure is the uplink synchronous detection for the SCell, now, the UE knows that its SCell is fitted on an others TAG by base station again, then UE ignores the UL grant in the RAR message, and stops at transmission SRS and the re-transmission of up non-self-adapting on the SCell.Here " the others TAG " mentioned and hereinafter is for SCell TAG affiliated at present, that is, it represents the TAG in addition to the TAG belonging to the SCell, can be one new TAG or one TAG existed.
Wherein, if the Reserved bit in the RAR message are 1, then the UE determines that the random access procedure is the uplink synchronous detection for the SCell, now, the UE knows that its SCell is fitted on an others TAG by base station again, then UE ignores the value in the TA command in the TA command or the preservation RAR message in the RAR message, and ignore the UL grant in the RAR message, stop on the SCell and send SRS and the re-transmission of up non-self-adapting.
Wherein, if the value of the T-CR TI in the RAR message is 0, then the UE determines that the random access procedure is the uplink synchronous detection for the SCell, now, the UE knows that its SCell is fitted on an others TAG by base station again, then UE ignores the value in the TA command in the TA command or the preservation RAR message in the RAR message, and ignore the UL grant in the RAR message, stop on the SCell and send SRS and the re-transmission of up non-self-adapting.
In step 303, the UE SCell is fitted on again after an others TAG in base station, UE it needs to be determined that on the SCell send upward signal when used TA values.
If above-mentioned SCell has been fitted in a TAG existed by base station again, the TA values that UE is used when sending upward signal on the SCell are the TA values in the TAG existed.
If above-mentioned SCell has been fitted in a new TAG by base station again, then base station can select retriggered UE to perform random access procedure and TA values used in upward signal are sent on the SCell to obtain, and UE directly can also be sent into TA values used in upward signal on the SCell by TAC MAC CE and notify UE.
Wherein, if base station uses the former, UE can determine that it sends TA values used in upward signal on the SCell according to existing means. Wherein, if base station by the value of TA command in RAR using the latter and by being set to 0 come notifying user equipment（UE) random access procedure is the secondary serving cell for carrying out the UE（SCell uplink synchronous detection), then UE is after the TAC MAC CE for the SCell are received, and UE is by NTA,.ldIt is set to 0 and calculates by following formula send TA values new used in upward signal on the SCell.
NTA,oid + (TA-31)*16 = (TA -31)*16
Wherein, TA is the value in TAC MAC CE.
Another sunset is foretold, if base station by the value of Reserved bit in RAR using the latter and by being set to 1 or by the way that the value of T-CRNTI in RA is set into 0 come notifying user equipment（UE) random access procedure is the secondary serving cell for carrying out the UE（SCell uplink synchronous detection), meanwhile, if UE is after the RAR is received, it have ignored the TA command in RAR message, then UE is after the TAC MAC CE for the SCell are received, and UE is by NTA,.ld0 is set to, and TA values new used in upward signal are sent on the SCell by following formula calculating.
NTA = NTA,oid + (TA-31)*16 = (TA -31)*16
Wherein, TA is the value in TAC MAC CE.
In addition, if base station by the value of Reserved bit in RAR using the latter and by being set to 1 or by inciting somebody to action
T-CRNTI value is set to 0 and carrys out notifying user equipment in RA（UE) random access procedure is the secondary serving cell for carrying out the UE（SCell uplink synchronous detection), simultaneously, if UE is after the RAR is received, save the value in the TA command in RAR message, so UE is calculated by following formula and TA values new used in upward signal is sent on the SCell after the TAC MAC CE for the SCell are received.
Wherein, NTA idThe value of TA command in the RAR message that=TA'*16 TA' preserve for UE；TA is the value in TAC MAC CE.
The UE SCell is fitted on again in base station after an others TAG, and UE determined by above method on the SCell send upward signal when used TA values after, you can restart on the SCell send SRS and up non-self-adapting re-transmission.
By the method for the present embodiment, after the RAR message for receiving base station transmission, correct processing is made that according to the RAR message in the case of the TAT operations of the TAG belonging to its SCell by UE, so as to avoid asynchronous problem when sending upward signal.
In order that the method for embodiment 1 and embodiment 2 is more clear understandable, below in conjunction with base station and UE interactive stream Cheng Tu, the method for method and embodiment 2 to embodiment 1 is illustrated.
Fig. 4 is base station according to the method for the present embodiment and UE interaction diagrams, refer to Fig. 4, the process of the interaction comprises the following steps：
Step 401：Base station sends PDCCH order triggerings UE to UE and Preamble is sent on SCell;Step 402:UE sends Preamble on SCell;
Step 403：Base station sends RAR message to UE；
Step 404:Base station sends RRC to UE and matches somebody with somebody signaling again, and the above-mentioned SCell of the UE is fitted on into another TAG again;
Step 405:UE sends RRC to base station and matches somebody with somebody completion message again；
Step 406:Base station sends TAC MAC CE to UE.
In the present embodiment, as described by background section, when base station is by detecting upward signals of the UE on SCell, suspect that the UE SCell needs to change after the TAG that it is belonged to, triggering UE first sends Preamble (step 401) on the SCell, and whether the Preamble (step 402) then sent according to UE needs to change TAG judging the UE SCell and change to which TAG really.
In the present embodiment, after base station determines that the SCell of the UE needs to change TAG, accidental access response can be sent to UE（RAR) message（Step 403).Have many base station triggers UE is sent due to Preamble carries out random access procedure, TA values in the AR message all sent in order to avoid the UE existing schemes being previously mentioned according to background section on the SCell and other Serving Cell for belonging to same TAG with the SCell according to base station send upward signal, and the present embodiment notified during the UE random access procedures by the RAR message in order to which the uplink synchronous for being SCell is detected.
Fig. 5 is RAR structural representations, and as described in Figure 5, RAR message includes：, TA command, UL-grant and T-CR TI.Wherein,
R is reserved bit, and its length is lbit, and value is 0.
TA command (Timing Advance Command, time advance order）UE used Timing Advances when sending upward signal are used to refer to, its length is l lbit.
UL grant (give by Up Link grant, up-link）The resource information used in UE transmission upstream datas is used to refer to, its length is 20bit.
T-CR TI (Temporary C- NTITemporary Cell-Radio Network Temporary Identifier Temporary Cells-Radio Network Temporary Identifier）The temporary mark that UE is used in the random access procedure is used to refer to, its Length is 16bit.
In one embodiment of step 403, in the RAR message that base station is sent to UE, TA command value is set to 0, for indicating that the random access procedure is detected for carrying out SCell uplink synchronous.Now, UE is received after the RAR message, if the TAT of the TAG belonging to its SCell is current is still in operation, and UE can ignore the UL grant in the RAR message, and stop at transmission SRS and the re-transmission of up non-self-adapting on the SCell.Now, the UE SCell still falls within former TAG.
In the another embodiment of step 403, in the RAR message that base station is sent to UE, Reserved bit are set to 1, for indicating that the random access procedure is detected for carrying out SCell uplink synchronous.Now, UE is received after the RAR message, if the TAT of the TAG belonging to its SCell is current is still in operation, then UE can ignore the TA command in the RA message or preserve the value of the TA command, the UL grant in the RAR message can be ignored simultaneously, and stop at transmission SRS and up non-self-adapting on the SCell and retransmitted.Now, the UE SCell still falls within former TAG.
In the another embodiment of step 403, in the AR message that base station is sent to UE, T-CR TI value is set to 0, for indicating that the random access procedure is detected for carrying out SCell uplink synchronous.Now, UE is received after the RAR message, if the TAT of the TAG belonging to its SCell is current is still in operation, then UE can ignore the TA command in the RAR message or preserve the value of the TA command, the UL grant in the RAR message can be ignored simultaneously, and stop at transmission SRS and up non-self-adapting on the SCell and retransmitted.Now, the UE SCell still falls within former TAG.
In the present embodiment, after AR message has been fed back in base station to UE, RRC can be sent to UE and match somebody with somebody signaling (step 404) again, the SCell of the UE is fitted on an others TAG again.Wherein, other TAG are probably a TAG existed, it is also possible to a new TAG.
If above-mentioned SCell has been fitted in a TAG existed by base station again, the TA values that UE is used when sending upward signal on the SCell are the TA values in the TAG existed.
If above-mentioned SCell has been fitted in a new TAG by base station again, then base station can select retriggered UE to perform random access procedure and TA values used in upward signal are sent on the SCell to obtain, and UE directly can also be sent into TA values used in upward signal on the SCell by TAC MAC CE and notify UE.
Wherein, UE according to the TAC MAC CE determine its send upward signal on the SCell used in TA values mode as it was previously stated, in this description will be omitted.
By the method for the present embodiment, UE is received in the case of the TAT operations of the TAG belonging to its SCell After the RAR message that base station is sent, correct processing is made that according to the AR message, the TAG for completing its SCell matches somebody with somebody again, and avoids asynchronous problem when sending upward signal.
Embodiment 3
The embodiment of the present invention additionally provides a kind of method that Timing Advance group is matched somebody with somebody again.Fig. 6 is the flow chart of this method, refer to Fig. 6, and this method includes：
Step 601：Base station is after triggering UE sends Preamble on SCell, before RAR message is sent to the UE, and send RRC to the UE is fitted on other TAG again with signaling by the SCell again;
Wherein, as described by background section, when base station is by detecting upward signals of the UE on SCell, suspect that the UE SCell needs to change after the TAG that it is belonged to, first triggering UE Preamble is sent on the SCell, the Preamble then sent according to UE come judge the UE SCell whether need really change TAG and change arrive which TAG.In the present embodiment, after base station is by judging to determine that the SCell needs to change TAG really, first RAR message is not sent to UE, but RRC is sent again with signaling so that the SCell is fitted on an others TAG again to UE.
After have sent Preamble on its SCell due to UE, do not receive the RAR message of base station transmission, then UE thinks that base station does not receive the Preamble, can during certain in send the Preamble to base station again.And in the present embodiment, if UE have received the RRC before RAR message is received and its SCell is fitted on an others TAG with signaling again again, then UE thinks that base station have received the Preamble of its transmission previous, it can carry out matching somebody with somebody again for its SCell TAG with signaling again according to the RRC, without sending the Preamble to base station again.Specifically, the processing of UE sides will be illustrated below in an example.
Step 602:Base station is after the RRC for receiving UE feedbacks matches somebody with somebody completion signaling again, RAR message or TAC MAC CE, used TA values when determining that it sends upward signal on the SCell according to the AR or the TAC MAC CE so as to UE are sent to the UE.
Wherein, TA values used in upward signal are sent in order to allow UE to be able to know that on its SCell, base station can send AR message or TAC MAC CE to the UE, according to the AR message or the TAC MAC CE, UE is that can determine that after its SCell TAG matches somebody with somebody again, used TA values when it sends upward signal on the SCell.Specifically, the processing of UE sides will be illustrated below in an example.Pass through the method for the present embodiment, base station is after triggering UE sends Preamble, first RRC, which is sent, before RAR message is sent to UE to UE matches somebody with somebody signaling again, so that the SCell of the UE is fitted on into an others TAG again, pass through RAR message or TAC MAC CE again, make UE after its SCell is fitted on other TAG again, can determine that it sends upward signal institute on SCell The TA values used.Avoid up nonsynchronous problem.
Embodiment 4
The embodiment of the present invention additionally provides a kind of method that Timing Advance group is matched somebody with somebody again.Fig. 7 is the flow chart of this method, refer to Fig. 7, and this method includes：
Step 701:After UE sends Preamble according to the triggering of base station on SCell, if before RAR message is received, the RRC that the SCell is fitted on to other TAG again for receiving the base station transmission matches somebody with somebody signaling again, the RRC indicates the SCell being fitted on other TAG (including existing TAG or new TAG) again with signaling again, then the UE thinks that the last time Preamble of transmission has sent success, stop on the SCell and send Preamble, and discharge when Preamble of the base station on SCell is triggered is sent for the UE special Preamble distributed and special Physical Random Access Channel resource；
Wherein, after base station triggers UE sends Preamble, if UE does not receive the AR message of base station feedback within a certain period of time, then it is assumed that send unsuccessful, it can send the Preamble again to base station.In the present embodiment, this is improved, if receiving the RRC reallocation messages of base station transmission before the RAR message of base station feedback is received, the RRC signaling indicates the SCell being fitted on other TAG (including existing TAG or new TAG) again, then UE thinks that base station have received the Preamble, now, UE is stopped at and Preamble is sent on its SCell, and discharges corresponding resource.
Step 702:If the RRC is again that the SCell is fitted on into a new TAG with signaling again, then the UE is after the matching somebody with somebody of the TAG of the SCell is completed again, the RAR message or TAC MAC CE sent according to the base station received, determines that it sends TA values used in upward signal on the SCell.
Wherein, if above-mentioned SCell is fitted on a TAG existed by above-mentioned RRC with signaling again again, UE can determine that it sends the TA values that TA values used in upward signal are the above-mentioned TAG existed on above-mentioned SCell.This belongs to prior art, will not be repeated here.
Wherein, if the RRC is again that the SCell is fitted on into a new TAG with signaling again, the UE will be stopped on the SCell after the matching somebody with somebody of the TAG of the SCell is completed again and be sent SRS and up non-self-adapting is retransmitted.
Wherein, after the UE TAG for completing the SCell match somebody with somebody again, if UE receives the RAR message that the base station is sent, the UE obtains the TA value calculating in the TA command in AR message to send TA values used in upward signal on the SCell.If before the corresponding TAT of the new TAG start, UE receives the TAC MAC CE that the base station is sent, then the UE will be according to the TAC MAC CE In TA value calculating obtain on the SCell send upward signal when used TA values.
Wherein, when UE determine its SCell complete TAG be equipped with again and its on the SCell send upward signal when used TA values after, you can restart on the SCell send SRS and up non-self-adapting re-transmission.
Pass through the method for the present embodiment, if its SCell is fitted on an others TAG by the RRC that UE have received base station transmission before the RAR message of base station feedback is received with signaling again again, it ensure that UE is correctly handled, thus avoid asynchronous problem when sending upward signal.
In order that the method for embodiment 3 and embodiment 4 is more clear understandable, below in conjunction with base station and UE interaction diagrams, the method to embodiment 3 and embodiment 4 is illustrated.
Fig. 8 is base station according to the method for the present embodiment and UE interaction diagrams, refer to Fig. 8, the process of the interaction comprises the following steps：
Step 801：Base station sends PDCCH order triggerings UE to UE and Preamble is sent on SCell;Step 802:UE sends Preamble on SCell;
Step 803:Base station sends RRC to UE and matches somebody with somebody signaling again, and the above-mentioned SCell of the UE is fitted on into another TAG again;
Step 804:UE sends RRC to base station and matches somebody with somebody completion message again；
Step 805：Base station sends RAR message to UE.
Optionally, the interaction also includes：
Step 806:Base station sends TAC MAC CE to UE.
In the present embodiment, as described by background section, when base station is by detecting upward signals of the UE on SCell, suspect that the UE SCell needs to change after the TAG that it is belonged to, triggering UE first sends Preamble (step 801) on the SCell, and whether the Preamble (step 802) then sent according to UE needs to change TAG judging the UE SCell and change to which TAG really.
In the present embodiment, after base station determines that the SCell of the UE needs to change TAG, accidental access response is being sent to UE（AR) message（Step 805) before, first send RRC to UE and match somebody with somebody signaling again（Step 803), the SCell of the UE is fitted on an others TAG again.Wherein, other TAG are probably a TAG existed, it is also possible to a new TAG.
Thus, after UE sends Preamble on SCell, if before RAR is received, the RRC received for the SCell matches somebody with somebody signaling again, the SCell is fitted on other TAG (including existing TAG or new TAG) again, then UE thinks that the last time Preamble of transmission has sent success, the Preamble stopped on the SCell Transmission, and discharge before base station trigger SCell on Preamble send when be its allocated special Preamble and special Physical Random Access Channel resource.
Wherein, if the SCell is fitted on a TAG existed by the RRC that UE receives for the SCell with signaling again again, then UE normally sends upward signal using the TA values in the TAG existed as the TA values used when sending upward signal on the SCell.
Wherein, if the SCell is fitted on a new TAG by the RRC that UE receives for the SCell with signaling again again, UE is stopped on the SCell after the TAG for completing the SCell matches somebody with somebody again and is sent SRS and up non-self-adapting is retransmitted.After the UE receives AR or TAC MAC CE, the value in TA command in AR message or the value in TAC MAC CE, determine that it sends TA value used in upward signal on above-mentioned SCell, and restart to send SRS and the re-transmission of up non-self-adapting on the SCell.
Wherein, if UE receives RAR message, its determination its TA values used in upward signal sent on above-mentioned SCell be： TA value = TA* 16.Wherein, TA be the AR message in TA command value.
Wherein, if before the corresponding TAT of the new TAG start, UE receives TAC MAC CE, then its determination its TA values used in upward signal sent on above-mentioned SCell be： NTA,new=N China+(TA-31) * 16, wherein, N China=Q, TA is the value in the TAC MAC CE.
By the method for the present embodiment, UE ensure that UE is correctly handled in the case where the RRC that base station transmission is have received before receiving the RAR message of base station feedback matches somebody with somebody signaling again, thus avoid asynchronous problem when sending upward signal.
The embodiment of the present invention additionally provides a kind of base station, as described in the following examples 5, because the principle that the base station solves problem is similar with the method for embodiment 1, therefore, its specific implementation is referred to the implementation of the method for embodiment 1, repeats part and repeats no more.
Embodiment 5
The embodiment of the present invention additionally provides a kind of base station.Fig. 9 is the composition schematic diagram of the base station, refer to Fig. 9, and the base station includes：
First transmitting element 91, it sends AR message to UE in the random access procedure, by random access procedure described in RAR message notice UE is detected for carrying out the SCell of UE uplink synchronous；
Second transmitting element 92, it by the SCell of the UE after a new TAG is fitted on again, TAC MAC CE are sent to the UE, so that UE is according to the AR message standing grain Π/or described TAC MAC CE, used TA values when it sends upward signal on the SCell are determined. Wherein, the value of TA command in the RAR message that first transmitting element 91 is sent is 0, or the value of the Reserved bit in the RA message is 1, or the value of the T-CR TI in the AR message is 0, to notify random access procedure described in UE to be detected for carrying out the SCell of UE uplink synchronous.
In the present embodiment, because base station indicates the random access procedure by RAR message detected for carrying out SCell uplink synchronous, UE will not be handled after the RAR message is received according to existing protocol（As described by background technology）, thus avoid and belong to a TAG other Serving cell also according to the TA values in the RA message with the SCell to send upward signal, the problem of the caused uplink synchronous that can not be kept with other UE.
The embodiment of the present invention additionally provides a kind of user equipment（UE), as described in the following examples 6, because the principle that the UE solves problem is similar with the method for embodiment 2, therefore, its specific implementation is referred to the implementation of the method for embodiment 2, repeats part and repeats no more.
Embodiment 6
The embodiment of the present invention additionally provides a kind of UE.Figure 10 is the composition schematic diagram of the UE, refer to Figure 10, and the UE includes：
Judging unit 101, it judges the Timing Advance timer of the TAG belonging to the SCell after the RAR message for its SCell is received（TAT) whether it is currently running；
First determining unit 102, it determines whether the random access procedure is that the uplink synchronous for being directed to the SCell is detected when the judged result of the judging unit 101 is to be according to the RAR message；
Second determining unit 103, it is when it is the uplink synchronous detection for the SCell that first determining unit 102, which is defined as the random access procedure, the SCell to be fitted on to a new TAG in base station again after, the TAC MAC CE sent according to the RAR message and/or the base station received, determine that it sends TA values used in upward signal on the SCell；
First processing units 104, its when above-mentioned first determining unit 102 is defined as above-mentioned random access procedure for above-mentioned SCell uplink synchronous detect when, ignore the UL grant in the RAR message, and stop at transmission SRS and up non-self-adapting on the SCell and retransmit.
Wherein, first determining unit 102 is used for：
The value of TA command in the RAR message is 0, or the value of the Reserved bit in the AR message is 1, or the value of the T-CRNTI in the RAR message be 0 when, determine the random access procedure be for the SCell uplink synchronous detect. Wherein, the UE also includes second processing unit 105, and the second processing unit 105 is used for：When Reserved bit in the AR message are 1 or the value of T-CR TI in the RAR message is 0, ignore the TA command in the RAR message or preserve the value in TA command in the RAR message.
Wherein, second determining unit 103 is used for：
When the TA values in TA command in the RAR message are 0, used TA values when the TA value calculating in the TAC MAC CE sent according to the base station received obtains sending upward signal on the SCell.For example, calculating used TA values when the UE sends downstream signal on the SCell according to below equation： NTA,oid + (ΤΑ-31)*16.Wherein, NTA,.ldIt is the value in TAC MAC CE for 0, TA.Reserved bit in the AR message is 1 or T-CR TI are 0, and the UE is when have ignored the TA command in RAR message, used TA values when the TA value calculating in the TAC MAC CE received obtains sending upward signal on the SCell.For example, calculating used TA values when downstream signal is sent on the SCell according to below equation： NTA,new= NTA,.ld+ (TA-31)*16.Wherein, NTA,.ldIt is the value in TAC MAC CE for 0, TA.
Reserved bit in the AR message is 1 or T-CRNTI is 0, and the UE is when saving the value of the TA command in RAR message, used TA values when the TA value calculating in the TAC MAC CE received obtains sending upward signal on the SCell.For example, calculating used TA values when downstream signal is sent on the SCell according to below equation： NTA,new= NTA,oid + (ΤΑ-31)*16.Wherein, NTA,.ldThe value of TA command in the RAR message that=TA'*16, TA' preserve for UE, TA is the value in TAC MAC CE.
Pass through the UE of the present embodiment, in the case of the TAT operations of the TAG belonging to its SCell, after the RAR message for receiving base station transmission, correct processing is made that according to the AR message, the TAG for completing its SCell matches somebody with somebody again, and avoids asynchronous problem when sending upward signal.
The embodiment of the present invention additionally provides a kind of base station, as described in the following examples 7, because the principle that the base station solves problem is similar with the method for embodiment 3, therefore, its specific implementation is referred to the implementation of the method for embodiment 3, repeats part and repeats no more.
Embodiment 7
The embodiment of the present invention additionally provides a kind of base station.Figure 11 is the composition schematic diagram of the base station, refer to Figure 11, and the base station includes： First transmitting element 111, it is after the base station triggers UE sends Preamble on SCell, before RAR message is sent to the UE, and send RRC to the UE is fitted on other TAG again with signaling by the SCell again;
Second transmitting element 112, its RRC that UE feedbacks are received in the base station matches somebody with somebody again to be completed after signaling, AR message or TAC MAC CE, used TA values when determining that it sends upward signal on the SCell according to the AR or the TAC MAC CE so as to UE are sent to the UE.
By the base station of the present embodiment, after triggering UE sends Preamble, before sending RAR message to UE, send RRC to UE and match somebody with somebody signaling again, to ensure that UE is correctly handled, thus avoid asynchronous problem when sending upward signal.
The embodiment of the present invention additionally provides a kind of user equipment（UE), as described in the following examples 8, because the principle that the UE solves problem is similar with the method for embodiment 4, therefore, its specific implementation is referred to the implementation of the method for embodiment 4, repeats part and repeats no more.
Embodiment 8
The embodiments of the invention provide a kind of UE.Figure 12 is the composition schematic diagram of the UE, refer to Figure 12, and the UE includes：
Judging unit 121, it judges that the UE is sent after Preamble according to the triggering of base station on SCell, before RAR message is received, the RRC that the SCell is fitted on to other TAG again for whether receiving the base station transmission matches somebody with somebody signaling again, and the RRC indicates the SCell being fitted on other TAG (including existing TAG or new TAG) again with signaling again;
Processing unit 122, it is in the judged result of the judging unit 121 for when being, it is believed that what last time sent
Preamble has sent success, stops at and Preamble is sent on the SCell, and discharges when Preamble of the base station on SCell is triggered is sent for the UE special Preamble distributed and special Physical Random Access Channel resource；
Determining unit 123, it is when the RRC by the SCell again with signaling to be fitted on a new TAG again, after the matching somebody with somebody of the TAG of the SCell is completed again, the RAR message or TAC MAC CE sent according to the base station received, determines used TA values when the UE sends upward signal on the SCell.
Wherein, the processing unit 122 is additionally operable to：
When the RRC by the SCell again with signaling to be fitted on a new TAG again, after the matching somebody with somebody of the TAG of the SCell is completed again, stop on the SCell and send SRS and up non-self-adapting is retransmitted. Wherein, the determining unit 123 includes：
First determining module 1231, it is after the UE TAG for completing the SCell match somebody with somebody again, when receiving the RAR message that the base station is sent, the value in the TA command in the RAR message calculates used TA values when obtaining sending upward signal on the SCell；
Second determining module 1232, it is after the UE TAG for completing the SCell match somebody with somebody again, before the corresponding TAT of the new TAG start, when receiving the TAC MAC CE that the base station is sent, used TA values when the TA value calculating in the TAC MAC CE obtains sending upward signal on the SCell.
Wherein, if before the corresponding TAT of the new TAG start, the UE receives the TAC MAC CE, then used TA values when second determining module 1232 determines that the UE sends upward signal on the SCell according to below equation： Λ¾,,= Λ ,.ω+ (TA-31)* 16;Wherein, N China=0, TA are the value in the TAC MAC CE.
Wherein, after UE, which determines it, sends TA values used in upward signal on SCell, you can restart to send SRS on the SCell and up non-self-adapting is retransmitted.
Pass through the UE of the present embodiment, if the RRC for its some SCell that base station transmission is have received before the RAR message of base station feedback is received matches somebody with somebody signaling again, the RRC indicates the SCell being fitted on an others TAG again with signaling again, it ensure that and correctly handled, thus avoid asynchronous problem when sending upward signal.
The embodiment of the present invention additionally provides a kind of communication system, wherein, the communication system includes the base station described in embodiment 1 and the user equipment described in embodiment 2.
The embodiment of the present invention additionally provides a kind of communication system, wherein, the communication system includes the base station described in embodiment 3 and the user equipment described in embodiment 4.
The embodiment of the present invention additionally provides a kind of computer-readable program, wherein when performing the program in a base station, and the program causes computer to perform the method that embodiment 1 or the Timing Advance group described in embodiment 3 are matched somebody with somebody again in the base station.
The embodiment of the present invention additionally provides a kind of storage medium for the computer-readable program that is stored with, and wherein the computer-readable program causes computer to perform the method that embodiment 1 or the Timing Advance group described in embodiment 3 are matched somebody with somebody again in a base station.
The embodiment of the present invention additionally provides a kind of computer-readable program, wherein when performing the program in a user device, and the program causes computer to perform the method that embodiment 2 or the Timing Advance group described in embodiment 4 are matched somebody with somebody again in the user equipment. The embodiment of the present invention additionally provides a kind of storage medium for the computer-readable program that is stored with, and wherein the computer-readable program causes computer to perform the method that embodiment 2 or the Timing Advance group described in embodiment 4 are matched somebody with somebody again in a user device.
Apparatus and method more than of the invention can be realized by hardware, can also be realized by combination of hardware software.The present invention relates to such computer-readable program, when the program is performed by logical block, the logical block can be made to realize devices described above or component parts, or the logical block is realized various methods or step described above.Logical block is such as the processor used in field programmable logic part, microprocessor, computer.The invention further relates to the storage medium for storing procedure above, such as hard disk, disk, CD, DVD, flash memory.
Above in association with specific embodiment, invention has been described, it will be appreciated by those skilled in the art that these descriptions are all exemplary, it is not limiting the scope of the invention.Those skilled in the art can make various variants and modifications to the present invention according to spirit and principles of the present invention, and these variants and modifications are also within the scope of the invention.

Claims (33)

  1. Claims
    1st, a kind of method that Timing Advance group is matched somebody with somebody again, wherein, methods described includes：
    The accidental access response that base station passes through random access procedure（RAR) message, notifying user equipment（UE) random access procedure is the secondary serving cell for carrying out the UE（SCell uplink synchronous detection)；
    Base station sends Timing Advance order medium education control unit after the SCell of the UE is fitted on into a new TAG again to the UE（TAC MAC CE), so that UE is according to the accidental access response message and/or the TAC MAC CE, it is determined that used TA values when upward signal is sent on the SCell.
    2nd, according to the method described in claim 1, wherein, the base station is by by the Timing Advance order of the AR message（TA command) value be set to 0 notice UE described in random access procedure be for carry out the SCell of the UE uplink synchronous detect.
    3rd, according to the method described in claim 1, wherein, the base station is by by the reserved bit of the AR message（Reserved bit) value be set to 1 notice UE described in random access procedure be for carry out the SCell of the UE uplink synchronous detect.
    4th, according to the method described in claim 1, wherein, the base station is by by Temporary Cell-Radio Network Temporary Identifier of the AR message（T-CR TI) value be set to 0 notice UE described in random access procedure be for carry out the SCell of the UE uplink synchronous detect.
    5th, a kind of method that Timing Advance group is matched somebody with somebody again, wherein, methods described includes：
    UE judges the Timing Advance timer of the TAG belonging to the SCell after the RAR message for its SCell is received（TAT) whether it is currently running；
    If it is, the UE determines whether the random access procedure is that the uplink synchronous for being directed to the SCell is detected according to the RAR message；
    If, then the UE ignores the UL grant in the RAR message, and stop at transmission SRS and the re-transmission of up non-self-adapting on the SCell, the SCell to be fitted on to a new TAG in base station again after, the TAC MAC CE sent according to the RAR message and/or the base station received, it is determined that used TA values when upward signal is sent on the SCell.
    6th, method according to claim 5, wherein, the UE determines whether the random access procedure is that the uplink synchronous for being directed to the SCell is detected according to the AR message, including：
    If the value of the TA command in the RAR message is the Reserved in 0, or the RAR message Bit value is that the value of the T-CR TI in 1, or the RAR message is 0, then the UE determines that the random access procedure is detected for the uplink synchronous of the SCell.
    7th, method according to claim 6, wherein, methods described also includes：
    If the Reserved bit in the AR message are 1 or the value of the T-CRNTI in the RAR message is 0, the UE ignores the value in the TA command in TA command or the preservation RAR message in the AR message.
    8th, method according to claim 7, wherein, the SCell to be fitted on to a new TAG in base station by the UE again after, the TAC MAC CE sent according to the RAR message and/or the base station received, it is determined that used TA values when upward signal is sent on the SCell, including：
    If the TA values in TA command in the RAR message are 0, used TA values when the TA value calculating in the TAC MAC CE that the UE is sent according to the base station received obtains sending upward signal on the SCell；
    If the Reserved bit in the AR message are 1 or the value of the T-CRNTI in the RAR message is 0, and above-mentioned UE have ignored the TA command in the AR message, then used TA values when the TA value calculating in the TAC MAC CE that the UE is sent according to the base station received obtains sending upward signal on the SCell；
    If the Reserved bit in the AR message are 1 or the value of the T-CRNTI in the RAR message is 0, and above-mentioned UE saves the value of the TA command in the RAR message, then the TA values in the TAC MAC CE that the UE is sent according to the base station received and the value in the TA command in the RAR message of the preservation calculate used TA values when obtaining sending upward signal on the SCell.
    9th, method according to claim 8, wherein,
    The UE utilizes below equation, used TA values when the TA value calculating in the TAC MAC CE sent according to the base station received obtains sending upward signal on the SCell：
    Wherein, NTA,.ldIt is the TA values in the TAC MAC CE for 0, TA.
    10th, method according to claim 8, wherein,
    The UE utilizes below equation, according to the value of the TA values in the TAC MAC CE of the base station transmission received, and the TA command in the RAR message of the preservation, used TA values when calculating obtains sending upward signal on the SCell：
    Wherein NTA,.ldThe value of TA command in the AR message that=TA'*16, TA' preserve for the UE；TA is the TA values in the TAC MAC CE.
    11st, a kind of method that Timing Advance group is matched somebody with somebody again, wherein, methods described includes：
    Base station is after triggering UE sends Preamble on SCell, before RAR message is sent to the UE, and send RRC to the UE is fitted on other TAG again with signaling by the SCell again;
    Base station is after the RRC for receiving UE feedbacks matches somebody with somebody completion signaling again, RAR message or TAC MAC CE, used TA values when determining that it sends upward signal on the SCell according to the RAR or the TAC MAC CE so as to UE are sent to the UE.
    12nd, a kind of method that Timing Advance group is matched somebody with somebody again, wherein, methods described includes：
    After UE sends Preamble according to the triggering of base station on SCell, if before RAR message is received, the RRC that the SCell is fitted on to other TAG again for receiving the base station transmission matches somebody with somebody signaling again, then the UE is stopped at and Preamble is sent on the SCell, and is discharged when Preamble of the base station on SCell is triggered is sent for the UE special Preamble distributed and special Physical Random Access Channel resource；
    If the RRC is again that the SCell is fitted on into a new TAG with signaling again, then the UE is after the matching somebody with somebody of the new TAG is completed again, the AR message or TAC MAC CE sent according to the base station received, it is determined that used TA values when upward signal is sent on the SCell.
    13rd, method according to claim 12, wherein, if the RRC by the SCell again with signaling to be fitted on a new TAG again, methods described also includes：
    The UE is stopped on the SCell after completion TAG matches somebody with somebody again and is sent SRS and the re-transmission of up non-self-adapting.
    14th, method according to claim 12, wherein, the RAR message or TAC MAC CE sent according to the base station received, it is determined that used TA values when upward signal is sent on the SCell, including：If receiving the RAR message that the base station is sent, used TA values when the TA value calculating in TA command of the UE in the RAR message obtains sending upward signal on the SCell；
    If receiving used TA values when the TA value calculating of TAC the MAC CE, the UE of the base station transmission in the TAC MAC CE obtains sending upward signal on the SCell.
    15th, method according to claim 14, wherein,
    If before the corresponding TAT of the new TAG start, the UE receives the TAC MAC CE, then used TA values when the UE determines that it sends upward signal on the SCell according to below equation： NTA, = ΝΤΑ,ΟΜ + (ΤΑ-31)* 16；
    Wherein, NTA, LD=0, TA are the value in the TAC MAC CE.
    16th, a kind of base station, wherein, the base station includes：
    First transmitting element, it sends AR message to UE in the random access procedure, by random access procedure described in RAR message notice UE is detected for carrying out the SCell of UE uplink synchronous；
    Second transmitting element, it by the SCell of the UE after a new TAG is fitted on again, TAC MAC CE are sent to the UE, so that UE is according to the AR message standing grain Π/or described TAC MAC CE, it is determined that used TA values when upward signal is sent on the SCell.
    17th, base station according to claim 16, wherein,
    The value of TA command in the AR message that first transmitting element is sent is 0, to notify random access procedure described in UE to be detected for carrying out the SCell of UE uplink synchronous.
    18th, base station according to claim 16, wherein,
    The value of Reserved bit in the RAR message that first transmitting element is sent is 1, to notify random access procedure described in UE to be detected for carrying out the SCell of UE uplink synchronous.
    19th, base station according to claim 16, wherein,
    The value of T-CRNTI in the RAR message that first transmitting element is sent is 0, to notify random access procedure described in UE to be detected for carrying out the SCell of UE uplink synchronous.
    20th, a kind of user equipment（UE), wherein, the UE includes：
    Judging unit, it judges the Timing Advance timer of the TAG belonging to the SCell after the RAR message for its SCell is received（TAT) whether it is currently running；
    First determining unit, it determines whether the random access procedure is that the uplink synchronous for being directed to the SCell is detected when the judged result of the judging unit is to be according to the RAR message；
    Second determining unit, it is when it is the uplink synchronous detection for the SCell that first determining unit, which is defined as the random access procedure, the SCell to be fitted on to a new TAG in base station again after, the TAC MAC CE sent according to the RAR message and/or the base station received, determine used TA values when it sends upward signal on the SCell；
    First processing units, it is when it is the uplink synchronous detection for the SCell that first determining unit, which is defined as the random access procedure, ignore the UL grant in the RAR message, and stop at transmission S S and up non-self-adapting on the SCell and retransmit. 21st, UE according to claim 20, wherein, first determining unit is used for：The value of TA command in the RAR message is 0, or the value of the Reserved bit in the AR message is 1, or the value of the T-CR TI in the RAR message be 0 when, determine the random access procedure be for the SCell uplink synchronous detect.
    22nd, UE according to claim 21, wherein, the UE also includes：
    Second processing unit, when its Reserved bit in the AR message is 1 or the value of T-CRNTI in the RAR message is 0, ignores the TA command in the AR message or preserve the value in TA command in the RAR message.
    23rd, UE according to claim 22, wherein, second determining unit is used for：
    When the TA values in TA command in the RAR message are 0, sent according to the base station received
    Used TA values when TA value calculating in TAC MAC CE obtains sending upward signal on the SCell；Reserved bit in the AR message are 1 or the value of T-CRNTI in the RAR message is 0, and above-mentioned UE is when have ignored the TA command in the RAR message, the TA value calculating in the TAC MAC CE sent according to the base station received obtains used TA values during the transmission upward signal on the SCell；Reserved bit in the AR message are 1 or the value of T-CRNTI in the RAR message is 0, and above-mentioned UE is when saving the value in the TA command in the RAR message, TA values in the TAC MAC CE sent according to the base station received and the value in the TA command in the RAR message of the preservation, used TA values when calculating obtains sending upward signal on the SCell.
    24th, UE according to claim 23, wherein,
    Second determining unit utilizes below equation, in the TAC MAC CE sent according to the base station received
    Used TA values when TA value calculating obtains sending upward signal on the SCell：
    Wherein, NTA,.ldIt is the TA values in the TAC MAC CE for 0, TA.
    25th, UE according to claim 23, wherein,
    Second determining unit utilizes below equation, in the TAC MAC CE sent according to the base station received
    The value of TA command in TA values, and the RAR message of the preservation, used TA values when calculating obtains sending upward signal on the SCell：
    Wherein NTA,.ld=TA'*16, TA' are the TA command in the AR message that the UE is preserved Value；TA is the TA values in the TAC MAC CE.
    26th, a kind of base station, wherein, the base station includes：
    First transmitting element, it is after the base station triggers UE sends Preamble on SCell, before RAR message is sent to the UE, and send RRC to the UE is fitted on other TAG again with signaling by the SCell again;Second transmitting element, its RRC that UE feedbacks are received in the base station matches somebody with somebody again to be completed after signaling, RAR message or TAC MAC CE, used TA values when determining that it sends upward signal on the SCell according to the RAR or the TAC MAC CE so as to UE are sent to the UE.
    27th, a kind of user equipment（UE), wherein, the UE includes：
    Judging unit, it judges that the UE is sent after Preamble according to the triggering of base station on SCell, before RA message is received, if receive the RRC that the SCell is fitted on to the other TAG again weight tenth of the twelve Earthly Branches own signaling that the base station is sent；
    Processing unit, it is in the judged result of the judging unit for when being, stop at and Preamble is sent on the SCell, and discharge when Preamble of the base station on SCell is triggered is sent for the UE special Preamble distributed and special Physical Random Access Channel resource；
    Determining unit, it is when the RRC by the SCell again with signaling to be fitted on a new TAG again, after the matching somebody with somebody of the new TAG is completed again, the RAR message or TAC MAC CE sent according to the base station received, determines used TA values when the UE sends upward signal on the SCell.
    28th, UE according to claim 27, wherein, the processing unit is additionally operable to：
    When the RRC by the SCell again with signaling to be fitted on a new TAG again, after completion TAG matches somebody with somebody again, stop on the SCell and send SRS and the re-transmission of up non-self-adapting.
    29th, UE according to claim 27, wherein, the determining unit includes：
    First determining module, it is when the UE receives the AR message that the base station is sent, used TA values when the TA value calculating in the TA command in the RAR message obtains sending upward signal on the SCell；
    Second determining module, it is when the UE receives the ATC MAC CE that the base station is sent, according to described
    Used TA values when TA value calculating in TAC MAC CE obtains sending upward signal on the SCell.
    30th, UE according to claim 29, wherein,
    If before the corresponding TAT of the new TAG start, the UE receives the TAC MAC CE, then second determining module determines its TA value that upward signal is sent on the SCell according to below equation： NTA, = ΝΤΑ,ΟΜ + (ΤΑ-31)* 16；
    Wherein, NTA, LD=0, TA are the value in the TAC MAC CE.
    31st, a kind of communication system, wherein, the communication system includes the base station described in claim any one of 16-19 and the user equipment described in claim any one of 20-25.
    32nd, a kind of communication system, wherein, the communication system includes the base station described in claim 26 and the user equipment described in claim any one of 27-30.
    33rd, a kind of computer-readable program, wherein when performing the program in a base station, the program causes computer perform claim in the base station to require the method that 1-4, the Timing Advance group described in 11 any one match somebody with somebody again.
    34th, a kind of storage medium for the computer-readable program that is stored with, the wherein computer-readable program make it that perform claim requires the method that 1-4, the Timing Advance group described in 11 any one match somebody with somebody again to computer in a base station.
    35th, a kind of computer-readable program, wherein when performing the program in a user device, the program causes computer perform claim in the user equipment to require the method that the Timing Advance group described in any one of 5-10,12-15 is matched somebody with somebody again.
    36th, a kind of storage medium for the computer-readable program that is stored with, the wherein computer-readable program make it that perform claim requires the method that the Timing Advance group described in any one of 5-10,12-15 is matched somebody with somebody again to computer in a user device.
CN201280072292.9A 2012-05-14 2012-05-14 The method and apparatus that a kind of Timing Advance group is matched somebody with somebody again Expired - Fee Related CN104221453B (en)

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