CN101841905B - Method and base station for indicating restart of time alignment timer of terminal - Google Patents

Method and base station for indicating restart of time alignment timer of terminal Download PDF

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CN101841905B
CN101841905B CN 200910080455 CN200910080455A CN101841905B CN 101841905 B CN101841905 B CN 101841905B CN 200910080455 CN200910080455 CN 200910080455 CN 200910080455 A CN200910080455 A CN 200910080455A CN 101841905 B CN101841905 B CN 101841905B
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time
terminal
base station
time alignment
delay
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CN101841905A (en
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赵亚利
高卓
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Abstract

The invention discloses a method and a base station for indicating the restart of a time alignment timer of a terminal, wherein the method comprises the following steps of: determining the overtime time of the time alignment timer of the terminal; and sending a time alignment command to the terminal by the base station before the time alignment timer of the terminal is overtime so as to indicate the terminal to restart the time alignment timer. The method and the base station can ensure that the terminal cannot lose synchronization because the time alignment timer is overtime so as to standardize the action of the terminal and prevent the terminal from generating a series of operations which cannot be controlled by the base station because of the loss of synchronization.

Description

Method and the base station of aiming at timer terminal time restarted in a kind of indication
Technical field
The present invention relates to moving communicating field, method and the base station of aiming at timer terminal time restarted in particularly a kind of indication.
Background technology
Upstream synchronous timing is used to keep the uplink synchronous of terminal and base station, is convenient to that transmitting uplink data is carried out at the terminal and to the correct feedback of downlink data.Regulation is by the base station maintain uplink synchronous in LTE (Long Term Evolution, Long Term Evolution) system.
Fig. 1 is a uplink synchronous maintenance process implementing procedure sketch map, and as shown in Figure 1, the uplink synchronous maintenance process is: after base station initiated; Send TA cmd (time alignment order) to the terminal, if the terminal can not correctly receive TA cmd, then the terminal is to TAT (Time alignment timer; The time alignment timer) do not deal with; Return NAK (confirming wrong) message to the base station, base station T1 after a while resends TA cmd and restarts TAT, and the terminal correctly receives TA cmd and then starts the TAT at terminal and send ACK (confirming correct) information to the base station; The base station receives the TAT that the ACK information of sending out at the terminal is restarted the base station afterwards, and at this moment the terminal is the uplink synchronous state.Also show the processing procedure of restarting base station TAT again and sending TA cmd again to the terminal among Fig. 1 through T2 base station after a while, similar with aforementioned processing.
Can be found out that by Fig. 1 the weak point that uplink synchronous is kept method in the prior art is: the TAT start-up time at base station and terminal is also inconsistent, and the TAT of base station will lag behind than the TAT at terminal; Therefore possibly cause the terminal to produce the uncontrollable operation in base station, for example, the TAT at terminal is overtime; UE thinks oneself step-out; When satisfying at random access conditions, will initiate random access procedure, but base station side thinks that still this UE is in synchronous regime.
Summary of the invention
Method and base station that the embodiment of the invention provides a kind of indication to restart to aim at timer terminal time, the terminal possibly produce the problem of the uncontrollable operation in base station because of TAT is asynchronous in the prior art in order to solve.
The embodiment of the invention provides following technical scheme:
The method of aiming at timer terminal time is restarted in a kind of indication, comprises the steps:
Confirm the TAT time-out time at terminal;
The base station is before the TAT at terminal is overtime, and to terminal transmitting time alignment command, indicating terminal is restarted TAT;
Wherein, the base station was further calculated before the TAT of base station is overtime, need be resend the pre-set time that time alignment is ordered before the transmitting time alignment command of terminal, and said pre-set time is calculated according to the combination of following factor in the base station:
The terminal is to time alignment process of commands time delay;
The base station is to confirming correct ACK information processing time delay;
Up link UL/ down link DL configuration;
The downlink transfer time delay of time alignment order;
The timing adjustment amount that comprises in the time alignment order;
ACK/ confirms the uplink time delay of wrong NAK information;
When the time alignment order can not correctly be received by the terminal, send NAK from the terminal to the base station, the base station right demodulation obtains NAK information to the time delay that resends the time alignment order;
When the time alignment order can not correctly be received by the terminal, the number of retransmissions of time alignment order.
Preferable, said base station is when the transmitting time alignment command of terminal, being not later than said pre-set time in the corresponding moment, to terminal transmitting time alignment command.
Preferable, said pre-set time is calculated by following formula in the base station:
T＝(Ta+Tb+Tc+Tpue+Tpnb)*(N+1)+Td*N
Wherein, T is said pre-set time; Ta sends the time delay of ACK information and the timing adjustment amount that order is confirmed according to time alignment for the terminal of being confirmed by the UL/DL configuration correctly receives time alignment order back; Tb is the downlink transfer time delay of time alignment order; Tc is the uplink time delay of ACK/NAK information; Tpue is that the terminal is to time alignment process of commands time delay; Tpnb is that the base station is to ACK information processing time delay; N is time alignment order can not correctly be received by the terminal time, the maximum retransmission of time alignment order; Td is time alignment order can not correctly be received by the terminal time, sends NAK from the terminal to the base station, and the base station right demodulation obtains NAK information to resending the time delay that time alignment is ordered.
Preferable, said Ta value is: different UL/DL configurations are the maximum of ACK feedback delay down.
A kind of base station comprises:
Overtime determination module is used for confirming the TAT time-out time at terminal;
Sending module was used for before the TAT at terminal is overtime, and to terminal transmitting time alignment command, indicating terminal is restarted the TAT at terminal;
Computing module; Be used at sending module before the transmitting time alignment command of terminal; Further calculate before the TAT of base station is overtime, need resend the pre-set time that time alignment is ordered, this computing module calculates said pre-set time according to combination of following factor:
The terminal is to time alignment process of commands time delay;
The base station is to confirming correct ACK information processing time delay;
Up link UL/ down link DL configuration;
The downlink transfer time delay of time alignment order;
The timing adjustment amount that comprises in the time alignment order;
ACK/ confirms the uplink time delay of wrong NAK information;
When the time alignment order can not correctly be received by the terminal, send NAK base station right demodulation from the terminal to the base station and obtain NAK information to the time delay that resends the time alignment order;
When the time alignment order can not correctly be received by the terminal, the number of retransmissions of time alignment order.
Said sending module is further used for being not later than said pre-set time in the corresponding moment, to terminal transmitting time alignment command.
Preferable, said computing module is further used for calculating said pre-set time by following formula:
T＝(Ta+Tb+Tc+Tpue+Tpnb)*(N+1)+Td*N
Wherein, T is said pre-set time; Ta sends the time delay of ACK information and the timing adjustment amount that order is confirmed according to time alignment for the terminal of being confirmed by the UL/DL configuration correctly receives time alignment order back; Tb is the downlink transfer time delay of time alignment order; Tc is the uplink time delay of ACK/NAK information; Tpue is that the terminal is to time alignment process of commands time delay; Tpnb is that the base station is to ACK information processing time delay; N is time alignment order can not correctly be received by the terminal time, the maximum retransmission of time alignment order; Td is time alignment order can not correctly be received by the terminal time, sends NAK, resends the time delay of time alignment order after receiving NAK to the base station from the terminal to the base station.
Preferable, said computing module is further used for confirming that the value of said Ta is: different UL/DL configurations are the maximum of ACK feedback delay down.
Embodiment of the invention beneficial effect is following:
In the embodiment of the invention; The base station is before the TAT at terminal is overtime; To terminal transmitting time alignment command, indicating terminal is restarted the TAT at terminal, can guarantee the terminal can be because its TAT is overtime step-out; Thereby terminal uncontrollable operation in a series of base stations because of step-out produces is avoided in the behavior at standard terminal.
Description of drawings
Fig. 1 is the sketch map of uplink synchronous maintenance process in the background technology;
Fig. 2 is restarted the method implementing procedure sketch map of aiming at timer terminal time for indication in the embodiment of the invention
Fig. 3 is each process time-delay analysis sketch map of base station side in the TA process in the embodiment of the invention;
Fig. 4 is the structural representation of base station in the embodiment of the invention.
Embodiment
Describe below in conjunction with the accompanying drawing specific embodiments of the invention.
Fig. 2 is restarted the method implementing procedure sketch map of aiming at timer terminal time for indication, and is as shown in the figure, in the uplink synchronous maintenance process, can comprise the steps:
Step 201, confirm the TAT time-out time at terminal;
Step 202, base station are before the TAT at terminal is overtime, and to terminal transmitting time alignment command, indicating terminal is restarted TAT.
Because terminal and base station TAT are different start-up time, terminal TA T start-up time is early than the base station, in order to keep uplink synchronous; In implementation process, the base station is carrying out uplink synchronous when keeping, before the TAT at terminal is overtime; Again send TA cmd to the terminal, indicating terminal is restarted the TAT at terminal, thereby is maintained uplink synchronous; Prevent the terminal because TAT is overtime step-out, avoided the uncontrollable operation in generation base station.
During practical implementation; A period of time is sent TA cmd in advance before its TAT is overtime in the base station; Before its TAT is overtime, can receive the TA cmd that send the base station with the assurance terminal, thereby guarantee that the terminal can not produce the uncontrollable operation in a series of base stations because of the overtime step-out of its TAT.
Then the base station is before the transmitting time alignment command of terminal, before the TAT that can calculate earlier in the base station is overtime, need resend pre-set time of time alignment order; Follow-up being not later than said pre-set time in the corresponding moment, to terminal transmitting time alignment command.
If be T pre-set time, then the base station needs need constantly send TA cmd at (TAT_MAX-T) the latest, could guarantee the terminal uplink synchronous like this.Wherein TAT_MAX is the value of TAT, and by the RRC configuration, the optional value of regulation is 500ms, 750ms, 1280ms, 1920ms, 2560ms, 5120ms, 10240ms, infinity in the LTE standard at present.
The inventor notices in the invention process; The base station is in order to keep uplink synchronous; When calculating in the base station TAT and need resend the pre-set time of TA cmd before overtime, can consider various propagation delay times, processing delay, retransmission delay time, UE is according to the factors such as adjustment amount of TAC; Can effectively keep the uplink synchronous at terminal so on the one hand; The uncontrollable terminal operation in base station is avoided in the behavior of standard UE, can guarantee also that on the other hand the base station can frequently not send TA order in order to keep uplink synchronous.
T pre-set time can be calculated according to following factor one of them or combination in any in the base station:
The terminal is to time alignment process of commands time delay;
The base station is to confirming correct ACK information processing time delay;
UL (Uplink, up link)/DL (Downlink, down link) configuration; UL/DL configuration has determined the terminal correctly to receive the time delay of sending ACK information behind the TA cmd
The downlink transfer time delay of time alignment order;
The timing adjustment amount that comprises in the time alignment order;
ACK/ confirms the uplink time delay of wrong NAK information;
When the time alignment order can not correctly be received by the terminal, send NAK from the terminal to the base station, the base station right demodulation obtains NAK information to the time delay that resends the time alignment order;
When the time alignment order can not correctly be received by the terminal, the number of retransmissions of time alignment order.
Among the embodiment, consider above-mentioned whole factor, TAT is made as T the overtime pre-set time that need resend TAcmd before in the base station with the base station, and then T pre-set time can be calculated by following formula in the base station:
T＝(Ta+Tb+Tc+Tpue+Tpnb+Td)*N+Ta+Tb+Tc+Tpue+Tpnb
Simplify following formula promptly:
T＝(Ta+Tb+Tc+Tpue+Tpnb)*(N+1)+Td*N
In the following formula:
Ta sends the time delay of ACK information and the timing adjustment amount that order is confirmed according to time alignment for the terminal of being confirmed by the UL/DL configuration correctly receives time alignment order back; For reliability, Ta can get the maximum of the ACK feedback delay under this UL/DL configuration when calculating;
Tb is the downlink transfer time delay of time alignment order;
Tc is the uplink time delay of ACK/NAK information;
Tpue is that the terminal is to time alignment process of commands time delay;
Tpnb is that the base station is to ACK information processing time delay;
N is time alignment order can not correctly be received by the terminal time, the maximum retransmission of time alignment order;
Td is time alignment order can not correctly be received by the terminal time, sends NAK from the terminal to the base station, and the base station right demodulation obtains NAK information to resending the time delay that time alignment is ordered.
Fig. 3 is each process time-delay analysis of base station side figure in the TA process; As shown in the figure, the base station is before the TAT at terminal is overtime, to terminal transmitting time alignment command; Indicating terminal is restarted the process of terminal TA T, has also expressed each factor of considering when aforementioned calculation shifts to an earlier date T in the drawings.
Based on same inventive concept; A kind of base station also is provided in the embodiment of the invention; To restart the method for aiming at timer terminal time similar owing to indicate among this base station principle of dealing with problems and the preceding method embodiment; Therefore the enforcement of this base station can repeat part and not give unnecessary details referring to the enforcement of method.
Fig. 4 is the structural representation of base station in the embodiment of the invention, and is as shown in the figure, can comprise in the base station:
Overtime determination module 401 is used for confirming the TAT time-out time at terminal;
Sending module 402 was used for before the TAT at terminal is overtime, and to terminal transmitting time alignment command, indicating terminal is restarted TAT.
In the enforcement, everyly can know that in the base station functional entity of TAT time-out time can be in order to realize overtime determination module.Sending module then uses functional entity common, the transmitting time alignment command to get final product.
In the enforcement, the base station can also comprise:
Computing module 403 is before the TAT that is used to calculate in the base station is overtime, need resend pre-set time of time alignment order;
Then sending module 402 can also be used for being not later than said pre-set time in the corresponding moment, to terminal transmitting time alignment command.
In the enforcement, every functional entity that possesses computing function all can be used for implementing computing module, the further enforcement that contact is following, and computing module can obtain from relevant functional entity and calculate required parameter, for example obtains TAT time-out time etc. from overtime module.
The above-mentioned functions module in force; Can realize uplink synchronous control by the MAC entity; Yet because the MAC entity can be divided into a lot of functional modules again; The MAC entity design of different company is not quite similar, and therefore can look the arrangement different functional reasonable in design of MAC and come the concrete above-mentioned functions that realizes, this is one for a person skilled in the art and knows technology.
In the enforcement, computing module 403 can also be used for calculating said pre-set time according to following factor one of them or combination in any:
The terminal is to time alignment process of commands time delay;
The base station is to confirming correct ACK information processing time delay;
Up link UL/ down link DL configuration;
The downlink transfer time delay of time alignment order;
The timing adjustment amount that comprises in the time alignment order;
ACK/ confirms the uplink time delay of wrong NAK information;
When the time alignment order can not correctly be received by the terminal, send NAK from the terminal to the base station, the base station right demodulation obtains NAK information to the time delay that resends the time alignment order;
When the time alignment order can not correctly be received by the terminal, the number of retransmissions of time alignment order.
In the enforcement, computing module 403 can also be used for calculating said pre-set time by following formula:
T＝(Ta+Tb+Tc+Tpue+Tpnb)*(N+1)+Td*N
Wherein, T is said pre-set time; Ta sends the time delay of ACK information and the timing adjustment amount that order is confirmed according to time alignment for the terminal of being confirmed by the UL/DL configuration correctly receives time alignment order back; Tb is the downlink transfer time delay of time alignment order; Tc is the uplink time delay of ACK/NAK information; Tpue is that the terminal is to time alignment process of commands time delay; Tpnb is that the base station is to ACK information processing time delay; N is time alignment order can not correctly be received by the terminal time, the maximum retransmission of time alignment order; Td is time alignment order can not correctly be received by the terminal time, sends NAK, resends the time delay of time alignment order after receiving NAK to the base station from the terminal to the base station.
In the enforcement, computing module can be with the Ta value: different UL/DL configurations are the maximum of ACK feedback delay down.
In the embodiment of the invention; The base station is before the TAT at terminal is overtime; To terminal transmitting time alignment command, indicating terminal is restarted the TAT at terminal, can guarantee the terminal can be because its TAT is overtime step-out; Thereby terminal uncontrollable operation in a series of base stations because of step-out produces is avoided in the behavior at standard terminal.
Give the base station in the embodiment of the invention and send the computational methods of TA cmd time in order to keep uplink synchronous; Wherein, The timing adjustment amount that carries among the pre-set time that the base station is sent TA cmd in advance and UL/DL configuration, the TA cmd, on/that the maximum retransmission of sending the stand-by period between the TA cmd once more after the TA cmd failure and allowing the base station can not correctly receive at UE under the situation of TA cmd is sent in processing delay, the base station at downlink transfer time delay, base station and terminal is relevant, has guaranteed that also the base station can frequently not send TA and order in order to keep uplink synchronous.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out through the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device; Make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computer or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic inventive concept could of cicada, then can make other change and modification to these embodiment.So accompanying claims is intended to be interpreted as all changes and the modification that comprises preferred embodiment and fall into the scope of the invention.

Claims (6)

1. the method for aiming at timer terminal time is restarted in an indication, it is characterized in that, comprises the steps:
Confirm the time alignment timer TAT time-out time at terminal;
The base station is before the TAT at terminal is overtime, and to terminal transmitting time alignment command, indicating terminal is restarted TAT;
Wherein, the base station was further calculated before the TAT of base station is overtime, need be resend the pre-set time that time alignment is ordered before the transmitting time alignment command of terminal, and said pre-set time is calculated according to the combination of following factor in the base station:
The terminal is to time alignment process of commands time delay;
The base station is to confirming correct ACK information processing time delay;
Up link UL or down link DL configuration;
The downlink transfer time delay of time alignment order;
The timing adjustment amount that comprises in the time alignment order;
ACK or confirm the uplink time delay of wrong NAK information;
When time alignment order can not correctly be received by the terminal, send NAK, resend the time delay of time alignment order after receiving NAK to the base station from the terminal to the base station;
When the time alignment order can not correctly be received by the terminal, the number of retransmissions of time alignment order;
The base station is T=(Ta+Tb+Tc+Tpue+Tpnb) * (N+1)+Td*N by formula, calculates said pre-set time, and wherein, T is said pre-set time; Ta sends the time delay of ACK information and the timing adjustment amount that order is confirmed according to time alignment for the terminal of being confirmed by UL or DL configuration correctly receives time alignment order back; Tb is the downlink transfer time delay of time alignment order; Tc is the uplink time delay of ACK or NAK information; Tpue is that the terminal is to time alignment process of commands time delay; Tpnb is that the base station is to ACK information processing time delay; N is time alignment order can not correctly be received by the terminal time, the maximum retransmission of time alignment order; Td is time alignment order can not correctly be received by the terminal time, sends NAK from the terminal to the base station, and the base station right demodulation obtains NAK information to resending the time delay that time alignment is ordered.
2. the method for claim 1 is characterized in that, further comprises:
Said base station is when the transmitting time alignment command of terminal, being not later than said pre-set time in the corresponding moment, to terminal transmitting time alignment command.
3. the method for claim 1 is characterized in that, said Ta value is: different UL or DL configuration be the maximum of ACK feedback delay down.
4. a base station is characterized in that, comprising:
Overtime determination module is used for confirming the TAT time-out time at terminal;
Sending module was used for before the TAT at terminal is overtime, and to terminal transmitting time alignment command, indicating terminal is restarted the TAT at terminal;
Computing module; Be used at sending module before the transmitting time alignment command of terminal; Further calculate before the TAT of base station is overtime, need resend the pre-set time that time alignment is ordered, this computing module calculates said pre-set time according to combination of following factor:
The terminal is to time alignment process of commands time delay;
The base station is to confirming correct ACK information processing time delay;
Up link UL or down link DL configuration;
The downlink transfer time delay of time alignment order;
The timing adjustment amount that comprises in the time alignment order;
ACK or confirm the uplink time delay of wrong NAK information;
When time alignment order can not correctly be received by the terminal, send NAK, resend the time delay of time alignment order after receiving NAK to the base station from the terminal to the base station;
When the time alignment order can not correctly be received by the terminal, the number of retransmissions of time alignment order;
Said computing module is further used for T=(Ta+Tb+Tc+Tpue+Tpnb) * (N+1)+Td*N by formula, calculates said pre-set time, and wherein, T is said pre-set time; Ta sends the time delay of ACK information and the timing adjustment amount that order is confirmed according to time alignment for the terminal of being confirmed by UL or DL configuration correctly receives time alignment order back; Tb is the downlink transfer time delay of time alignment order; Tc is the uplink time delay of ACK or NAK information; Tpue is that the terminal is to time alignment process of commands time delay; Tpnb is that the base station is to ACK information processing time delay; N is time alignment order can not correctly be received by the terminal time, the maximum retransmission of time alignment order; Td is time alignment order can not correctly be received by the terminal time, sends NAK from the terminal to the base station, and the base station right demodulation obtains NAK information to resending the time delay that time alignment is ordered.
5. base station as claimed in claim 4 is characterized in that, also comprises:
Said sending module is further used for being not later than said pre-set time in the corresponding moment, to terminal transmitting time alignment command.
6. base station as claimed in claim 4 is characterized in that, said computing module is further used for confirming that the value of said Ta is: different UL or DL configuration be the maximum of ACK feedback delay down.
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Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101827439B (en) * 2010-04-09 2013-01-16 上海华为技术有限公司 Time alignment timer adjustment method, and related device and system
CN107613523B (en) 2011-02-15 2021-12-28 三星电子株式会社 Power headroom reporting method and device for user equipment priority
JP5990543B2 (en) 2011-02-15 2016-09-14 サムスン エレクトロニクス カンパニー リミテッド Usable transmission power reporting method and apparatus for portable terminal
KR102073027B1 (en) * 2011-04-05 2020-02-04 삼성전자 주식회사 Method and appratus of operating multiple time alignment timer in mobile communication system using carrier aggregation
KR101995293B1 (en) 2011-02-21 2019-07-02 삼성전자 주식회사 Method and appratus of activating or deactivating secondary carriers in time division duplex mobile communication system using carrier aggregation
WO2012115421A2 (en) 2011-02-21 2012-08-30 Samsung Electronics Co., Ltd. Method of efficiently reporting user equipment transmission power and apparatus thereof
CN107017970B (en) 2011-04-05 2020-07-14 三星电子株式会社 Terminal and base station in carrier aggregation system and method thereof
US9681405B2 (en) 2011-05-10 2017-06-13 Samsung Electronics Co., Ltd. Method and apparatus for applying a time alignment timer in a wireless communication system using a carrier aggregation technique
CN103931246B (en) * 2012-10-30 2018-10-02 华为技术有限公司 Data transmission method, device, terminal and base station
WO2014113995A1 (en) * 2013-01-28 2014-07-31 Empire Technology Development Llc Maintaining uplink synchronization
CN104270810A (en) * 2014-10-16 2015-01-07 武汉理工大学 LTE-A system uplink synchronization method
US10531451B2 (en) * 2015-05-18 2020-01-07 Telefonaktiebolaget Lm Ericsson (Publ) Time advance for dual connectivity
CN108282858A (en) * 2017-01-05 2018-07-13 中兴通讯股份有限公司 Keep uplink synchronisation method, base station and user equipment
EP4138493A1 (en) 2018-05-10 2023-02-22 Apple Inc. Cellular reporting techniques for synchronization state changes
CN113630860B (en) * 2020-05-06 2023-11-24 北京佰才邦技术股份有限公司 Information confirmation method, terminal equipment and network equipment
CA3222885A1 (en) * 2021-08-04 2023-02-09 Lenovo (Beijing) Limited Methods and apparatuses for determining synchronization validity timer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1554159A (en) * 2001-07-09 2004-12-08 �����ɷ� Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system
CN101222775A (en) * 2008-01-23 2008-07-16 普天信息技术研究院有限公司 Method and base station for remaining ascending synchronization

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1554159A (en) * 2001-07-09 2004-12-08 �����ɷ� Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system
CN101222775A (en) * 2008-01-23 2008-07-16 普天信息技术研究院有限公司 Method and base station for remaining ascending synchronization

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