CN102083197A - Method, equipment and system for processing time advance - Google Patents
Method, equipment and system for processing time advance Download PDFInfo
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- CN102083197A CN102083197A CN2010106036564A CN201010603656A CN102083197A CN 102083197 A CN102083197 A CN 102083197A CN 2010106036564 A CN2010106036564 A CN 2010106036564A CN 201010603656 A CN201010603656 A CN 201010603656A CN 102083197 A CN102083197 A CN 102083197A
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- timing advance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
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Abstract
The invention discloses a method, equipment and system for processing time advance. The method comprises the following steps of: receiving an instruction of a base station that user equipment (UE) reports time advance (TA), and transmitting determined TA to a base station according to the instruction. A problem that an uplink timing synchronous relationship between an eNodeB and the UE cannot be realized because the UE actively regulates uplink signal transmission time can be solved.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of processing method, equipment and system of Timing Advance.
Background technology
At Long Term Evolution (Long Term Evolution, LTE) in the system, Timing Advance (TimeAlignment, TA) be used to represent that evolution base station (eNodeB) receives subscriber equipment (UserEquipment, UE) parameter of the timing offset of the data that send, its physical significance are meant the time delay back and forth of UE and eNodeB.Arrive the time unifying of eNodeB for the upward signal that makes all UE send, in initial random access phase, the base station arrives the time of base station by the lead code (Preamble) of measuring the UE transmission, calculating the UE upward signal need shift to an earlier date and how long send, promptly calculate TA, and the accidental access response message that will carry TA sends to UE.Simultaneously, in the up timing adjusting stage subsequently, eNodeB periodically sends relative TA to UE, to keep the uplink synchronous of UE and eNodeB.
In the prior art, the mobile up timing synchronized relation that may change between UE and the eNodeB of UE.Synchronous for the up timing of safeguarding UE and eNodeB, UE may initiatively adjust the time that upward signal sends, this method cause eNodeB to realize and UE between up timing synchronized relation.
Summary of the invention
An aspect of of the present present invention provides a kind of processing method of Timing Advance, comprising:
Receive the indication that the base station notifying user equipment reports Timing Advance;
According to described indication, the Timing Advance of determining is sent to described base station.
Another aspect of the present invention provides a kind of subscriber equipment, comprising:
Receiving element is used to receive the indication of base station notice reporting Timing Advance; And
Transmitting element is used for according to described indication, and the Timing Advance of determining is sent to described base station.
Another aspect of the present invention provides a kind of system, comprising: base station, described base station are used to send notifying user equipment and report the indication of Timing Advance to described subscriber equipment; Receive the Timing Advance that described subscriber equipment sends, and keep synchronously according to described Timing Advance and described subscriber equipment.
The processing method of the Timing Advance that the embodiment of the invention provides, equipment and system, can solve UE initiatively adjust the time that upward signal sends and cause eNodeB to realize and UE between the problem of up timing synchronized relation.
Description of drawings
The process flow figure that Fig. 1 provides for one embodiment of the present of invention;
The process flow figure that Fig. 2 provides for an alternative embodiment of the invention;
The process flow figure that Fig. 3 provides for another embodiment of the present invention;
The equipment schematic diagram that Fig. 4 provides for one embodiment of the present of invention;
The equipment schematic diagram that Fig. 5 provides for an alternative embodiment of the invention;
A kind of equipment schematic diagram that Fig. 6 provides for an alternative embodiment of the invention;
A kind of system schematic that Fig. 7 provides for an alternative embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Each embodiment of the present invention all goes for the LTE system, and the base station in the LTE system can be specially eNodeB.
Consult Fig. 1, one embodiment of the present of invention provide a kind of processing method of Timing Advance, and the method for present embodiment comprises the steps:
In the present embodiment, because the mobility of UE may change the up timing synchronized relation between UE and the base station, UE need adjust up timing and come maintaining uplink regularly synchronously, promptly needs to determine TA.For example, UE determines TA according to the message that the base station sends; And for example, the message that sends according to the base station of UE and UE determine that adjusted value (being the TA deviant) determines TA.UE is after determining TA, can send this TA that determines to the base station according to indication, then the base station can keep synchronously with UE according to this TA, estimate the distance between UE and the base station, thereby can provide the important theory foundation for network coverage analysis or network quality assessment etc.
Can solve in the present embodiment UE initiatively adjust the time that upward signal sends and cause eNodeB to realize and UE between the problem of up timing synchronized relation.
Consult Fig. 2, an alternative embodiment of the invention provides a kind of processing method of Timing Advance.Present embodiment comprises the steps.
For example, UE receives Radio Resource control (the Radio Resource Control that the base station sends, RRC) (Connection Reconfiguration) message is reshuffled in connection, this RRC ConnectionReconfiguration message comprises that notice UE reports the indication of TA, i.e. the time information and first indication information.
Optionally, the ReportConfigEUTRA cell in the RRC Connection Reconfiguration message comprises the temporal information and first indication information.For example, this first indication information is True or 1, and then expression needs the periodic report TA of UE according to the temporal information indication.It will be appreciated by those skilled in the art which kind of type this first indication information adopts and the bit number that takies does not influence the realization of the embodiment of the invention, repeats no more herein.
In this step, UE can determine TA earlier, and the cycle according to the temporal information indication sends to the base station with the TA that determines again.For example, UE sends to measure and reports (Measurement Report) message to give the base station, and this measurement reporting message comprises definite TA, is used to the TA that indicates UE to determine such as the MeasResultEUTRA cell in this message.And for example, and UE transmission media interviews control (Media Access Control, MAC) message is given the base station, and this MAC message comprises definite TA.Optionally, this MAC message comprises MAC Control Elements cell, the TA that this cell is used to indicate UE to determine.
Suppose that the TA that UE determined in the M cycle is N
TA, new, determine and/or the TA that sends to the base station is N in the M-1 cycle
TA, old, then UE is in the M cycle, at first according to N
TA, oldAnd N
TA1Determine that interim TA (is N
Tmp), again according to N
TmpAnd N
TA2Determine N
TA, new, then UE according to the cycle of temporal information indication with N
TA, newSend to the base station.The M here is the integer more than or equal to 2.
Optionally, N
TmpBe N
TA, old+ (N
TA1-31) * 16, N
TA, newBe N
Tmp+ N
TA2Above-mentioned N
TA1It is the very first time lead deviant that UE receives.For example UE receives the TA order that the base station sends, this order indication N
TA1Value, this value may be the arbitrary value in 0 to 63.Above-mentioned N
TA2For the second definite Timing Advance deviant of UE, for UE adjusts outside the TA in the indication of deferring to the base station, the parameter that adopts when further adjusting TA, this parameter is determined by UE.For example, UE is according to T
sThe second Timing Advance deviant N that determines
TA2Suppose T
s=1/ (15000 * 2048) second, when current downlink bandwidth is 1.4MHz, the N that UE determines
TA2Be 4*T
s, current downlink bandwidth is during more than or equal to 3MHz, the N that UE determines
TA2Be 2*T
s
That is to say that UE determines that TA comprises the very first time lead deviant N that UE sends according to the base station
TA1The second Timing Advance deviant N definite with UE
TA2Determine TA.For example, UE receives the TA order, the N in the up timing adjusting stage according to this order indication
TA1Value determine N
TmpThen, UE determines according to the cycle of temporal information indication and sends TA to the base station.The cycle of supposing the temporal information indication is 200ms, and then the every 200ms of UE can be according to N
TA, oldAnd N
TA2Determine N one time
TA, new, and send to the base station.
Need to prove that UE can adopt diverse ways to determine the Timing Advance N in M-1 cycle
TA, oldFor example, if UE is in initial random access phase at M-1 during the cycle, N then
TA, OldBe N
TA1* 16, this N
TA1Be the value that the base station sends to the entrained TA order of the accidental access response message of UE (this TA order can be 11bit), the parameter that adopts when adjusting TA for base station indication UE.Wherein, at initial random access phase, this N
TA1Can be the arbitrary value in 0 to 1282.And for example, insert, for example be in the initial random access phase up timing adjusting stage afterwards, then N if UE has finished during the cycle at random at M-1
TA, oldThe Timing Advance and (N determined in the M-2 cycle for UE
TA1-31) sum * 16, perhaps, N
TA, oldThe Timing Advance and (N determined in the M-2 cycle for UE
TA1-31) * 16, and N
TA2Sum.
In the present embodiment, UE receives the temporal information and first indication information that the base station sends, and send the TA that determines to the base station according to cycle of temporal information indication, thereby solve UE initiatively adjust the time that upward signal sends and cause eNodeB to realize and UE between the problem of up timing synchronized relation, realized that UE periodically initiatively reports TA.
Consult Fig. 3, another embodiment of the present invention provides a kind of processing method of Timing Advance.Present embodiment comprises the steps:
For example, UE receives the RRC Connection Reconfiguration message that the base station sends, and this message comprises that notice UE reports the indication of TA, i.e. second indication information.For example, the ReportConfigEUTRA cell in this message comprises second indication information.For example, this second indication information is True or 1, and then expression needs UE determining to report TA behind the TA.It will be appreciated by those skilled in the art which kind of type this second indication information adopts and the bit number that takies does not influence the realization of the embodiment of the invention, repeats no more herein.
For example, UE sends to measure and reports (Measurement Report) message to give the base station, and this measurement reporting message comprises adjusted TA.
And for example, and UE transmission media interviews control (Media Access Control, MAC) message is given the base station, and this MAC message comprises adjusted TA.Optionally, this MAC message comprises MAC ControlElements cell, and this cell is used to indicate the adjusted TA of UE.
Suppose that this TA that determines of UE is N
TA, new, determine and/or the TA that sends to the base station is N last once (also promptly the last)
TA, old, then this implementation of determining TA of UE is: earlier according to N
TA, oldAnd N
TA1Determine that interim TA (is N
Tmp), again according to N
TmpAnd N
TA2Determine N
TA, new, UE reports this TA after determining TA then.
Optionally, N
TmpBe N
TA, old+ (N
TA1-31) * 16, N
TA, newBe N
Tmp+ N
TA2Above-mentioned N
TA1Be UE receive very first time lead deviant.For example UE receives the TA order that the base station sends, this order indication N
TA1Value, this value may be the arbitrary value in 0 to 63.Above-mentioned N
TA2For the second definite Timing Advance deviant of UE, for UE adjusts outside the TA in the indication of deferring to the base station, the parameter that adopts when further adjusting TA, this parameter is determined by UE.For example, UE is according to T
sThe second Timing Advance deviant N that determines
TA2Suppose T
s=1/ (15000 * 2048) second, when current downlink bandwidth is 1.4MHz, the N that UE determines
TA2Be 4*T
s, current downlink bandwidth is during more than or equal to 3MHz, the N that UE determines
TA2Be 2*T
s
Need to prove that UE can adopt diverse ways to determine the Timing Advance N in M-1 cycle
TA, old, can repeat no more referring to giving an example that the foregoing description provides herein.
In the present embodiment, by receiving second indication information that the base station sends, and after determining TA, send definite TA to the base station, thereby solve UE initiatively adjust the time that upward signal sends and cause eNodeB to realize and UE between the problem of up timing synchronized relation, realized that UE after adjusting TA, initiatively reports adjusted TA.
Consult Fig. 4, one embodiment of the present of invention provide a kind of subscriber equipment, and the subscriber equipment of present embodiment comprises: receiving element 11 and transmitting element 12; Wherein, receiving element 11 is used to receive the indication of base station notice reporting TA; Transmitting element 12 is used for according to indication, and the TA that determines is sent to the base station.
The subscriber equipment of present embodiment can be used to carry out the technical scheme of method embodiment shown in Figure 1, and it realizes that principle is similar, repeats no more herein.
In the present embodiment, by receiving the indication that base station notice UE reports TA, according to this indication, the TA that determines is sent to the base station, solve UE initiatively adjust the time that upward signal sends and cause eNodeB to realize and UE between the problem of up timing synchronized relation, realized that UE initiatively reports TA.
Consult Fig. 5, an alternative embodiment of the invention provides a kind of subscriber equipment, and on the basis of above-mentioned embodiment shown in Figure 4, this subscriber equipment also comprises processing unit 13, is used for determining the second Timing Advance deviant.
Further, the indication that receiving element 11 receives can comprise the temporal information and first indication information, and this temporal information is for indicating the cycle that reports Timing Advance, and first indication information is used to indicate the periodic report TA according to the temporal information indication.Then transmitting element 12 specifically is used for sending the Timing Advance N that determines in the M cycle
TA, newGive the base station, N
TA, newBe N
TA, old+ (N
TA1-31) * 16+N
TA2, wherein, N
TA, oldSend to the Timing Advance of base station M-1 cycle for transmitting element 12; N
TA1The very first time lead deviant that receives for receiving element 11; N
TA2The second Timing Advance deviant of determining for processing unit 13.
Perhaps, the indication that receiving element 11 receives can comprise second indication information, and this second indication information is used in reference to be shown in and adjusts after the TA, reports adjusted TA.Then transmitting element 12 specifically is used to send adjusted Timing Advance N
TA, newGive the base station, N
TA, newBe N
TA, old+ (N
TA1-31) * 16+N
TA2, wherein, N
TA, oldSend to the adjusted Timing Advance of base station for last UE; N
TA1The very first time lead deviant that receives for receiving element 11; N
TA2The second Timing Advance deviant of determining for processing unit 13.
Wherein, M is more than or equal to 2, and is integer.
Optionally, the TA of Que Dinging can be carried in the measurement reporting message or MAC message that transmitting element 12 sends to the base station.Optionally, the indication of notice reporting TA is carried in the RRCConnection Reconfiguration message of receiving element 11.
The subscriber equipment of present embodiment can be used for the technical scheme of execution graph 2 or method embodiment shown in Figure 3, and it realizes that principle is similar, repeats no more herein.The UE of present embodiment solved UE initiatively adjust the time that upward signal sends and cause eNodeB to realize and UE between the problem of up timing synchronized relation, realized periodically reporting TA or initiatively reported TA in each back of adjusting.
Consult Fig. 6, an alternative embodiment of the invention provides a kind of equipment, and this equipment can be the base station.This equipment comprises transmitting element 21 and receiving element 22.Wherein, transmitting element 21 is used to send notifying user equipment and reports the indication of Timing Advance to subscriber equipment; And receiving element 22 receives the Timing Advance that subscriber equipment sends, and keeps synchronously according to Timing Advance and subscriber equipment.
Optionally, transmitting element 21 specifically is used for transmission time information and first indication information is given subscriber equipment, temporal information is used to indicate the periodic report Timing Advance of subscriber equipment according to the temporal information indication for the cycle of indication user equipment to report Timing Advance, first indication information; Wherein, the temporal information and first indication information can be carried in the wireless resource control connection reconfiguration message; Perhaps, transmitting element 21 specifically is used to send second indication information to subscriber equipment, and second indication information is used to indicate subscriber equipment after adjusting Timing Advance, reports adjusted Timing Advance.Wherein, second indication information can be carried in the wireless resource control connection reconfiguration message.
Optionally, receiving element 22 receives the measurement reporting message that subscriber equipment sends, and this measurement reporting message comprises Timing Advance; Perhaps, receiving element 22 receives the media interviews control messages that subscriber equipment sends, and this media interviews control messages comprises Timing Advance.
Consult Fig. 7, a kind of system that one embodiment of the present of invention provide, the system of present embodiment comprise base station 31 and UE 32, and this base station is used to send notice UE 32 and reports the indication of TA to UE 32, receive the TA that UE 32 sends, and keep synchronously according to this TA and UE 32.
Optionally, the indication that this base station 31 sends can comprise the temporal information and first indication information, and this temporal information reports the cycle of TA for indicating UE 32, and first indication information is used to indicate the periodic report TA of UE 32 according to the temporal information indication; Perhaps, the indication that this base station 31 sends comprises second indication information, and this second indication information is used to indicate UE 32 after adjusting TA, reports adjusted TA.
Optionally, these base station 31 transmission time informations and first indication information or second indication information can be carried in the RRC Connection Reconfiguration message.
Optionally, base station 31 receives the measurement reporting message that UE 32 sends, and this measurement reporting message comprises TA; Perhaps, base station 31 receives the MAC message that UE 32 sends, and this MAC message comprises TA.
Optionally, this UE 32 can execution graph the technical scheme of embodiment of 1 to Fig. 3 method shown in arbitrary, its principle is similar, repeats no more herein.
The system of present embodiment solved UE initiatively adjust the time that upward signal sends and cause eNodeB to realize and UE between the problem of up timing synchronized relation, realized periodically reporting TA or initiatively reported TA in each back of adjusting.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (18)
1. the processing method of a Timing Advance is characterized in that, comprising:
Receive the indication that the base station notifying user equipment reports Timing Advance;
According to described indication, the Timing Advance of determining is sent to described base station.
2. the processing method of Timing Advance according to claim 1, it is characterized in that, described indication comprises the temporal information and first indication information, described temporal information is the cycle of the described user equipment to report Timing Advance of indication, and described first indication information is used to indicate the periodic report Timing Advance of described subscriber equipment according to described temporal information indication.
3. the processing method of Timing Advance according to claim 2 is characterized in that, and is described according to described indication, and the Timing Advance of determining is sent to described base station, comprising:
According to described first indication information and temporal information, the Timing Advance of determining is sent to described base station;
Wherein, described subscriber equipment sends to the Timing Advance N that determines of base station in the M cycle
TA, newBe N
TA, old+ (N
TA1-31) * 16+N
TA2, wherein, N
TA, oldSend to the Timing Advance of described base station M-1 cycle for described subscriber equipment; N
TA1Send to the very first time lead deviant of subscriber equipment for described base station; N
TA2Be the second Timing Advance deviant that described subscriber equipment is determined, M is more than or equal to 2, and is integer.
4. the processing method of Timing Advance according to claim 1 is characterized in that, described indication comprises second indication information, and described second indication information is used to indicate described subscriber equipment after adjusting Timing Advance, reports adjusted Timing Advance.
5. the processing method of Timing Advance according to claim 4 is characterized in that, and is described according to described indication, and the Timing Advance of determining is sent to described base station, comprising:
According to described second indication information, after adjusting Timing Advance, adjusted Timing Advance is sent to described base station;
Wherein, described subscriber equipment sends adjusted Timing Advance N
TA, newBe N
TA, old+ (N
TA1-31) * 16+N
TA2, wherein, N
TA, oldSend to the adjusted Timing Advance of base station for described subscriber equipment of last time; N
TA1Send to the very first time lead deviant of subscriber equipment for described base station; N
TA2Be the second definite Timing Advance deviant of described subscriber equipment.
6. according to the processing method of claim 3 or 5 described Timing Advances, it is characterized in that described N
TA2For described subscriber equipment according to T
sThe second Timing Advance deviant of determining, wherein, T
s=1/ (15000 * 2048) second.
7. according to the processing method of the arbitrary described Timing Advance of claim 1 to 6, it is characterized in that, described the Timing Advance of determining sent to described base station, comprising:
Send and measure reporting message to described base station, described measurement reporting message comprises described definite Timing Advance; Perhaps,
Send the media interviews control messages to described base station, described media interviews control messages comprises described definite Timing Advance.
8. according to the processing method of the arbitrary described Timing Advance of claim 1 to 6, it is characterized in that, receive the indication that the base station notifying user equipment reports Timing Advance, comprising:
Receive the wireless resource control connection reconfiguration message that the base station sends, described wireless resource control connection reconfiguration message comprises that described notifying user equipment reports the indication of Timing Advance.
9. a subscriber equipment is characterized in that, comprising:
Receiving element is used to receive the indication of base station notice reporting Timing Advance; And
Transmitting element is used for according to described indication, and the Timing Advance of determining is sent to described base station.
10. subscriber equipment according to claim 9 is characterized in that,
Described indication comprises the temporal information and first indication information, and described temporal information is for indicating the cycle that reports Timing Advance, and described first indication information is used to indicate the described Timing Advance of periodic report according to described temporal information indication; Perhaps,
Described indication comprises second indication information, and described second indication information is used in reference to be shown in and adjusts after the Timing Advance, reports adjusted Timing Advance.
11. subscriber equipment according to claim 10 is characterized in that, described subscriber equipment also comprises processing unit, and described processing unit is used for determining the second Timing Advance deviant;
If described indication comprises the temporal information and first indication information, described transmitting element specifically is used for: send the Timing Advance N that determines in the M cycle
TA, newGive the base station, described N
TA, newBe N
TA, Old+ (N
TA1-31) * 16+N
TA2, wherein, N
TA, oldSend to the Timing Advance of described base station M-1 cycle for described transmitting element; N
TA1The very first time lead deviant that receives for described receiving element; N
TA2Be the second definite Timing Advance deviant of described processing unit; Perhaps,
If described indication comprises second indication information, described transmitting element specifically is used for: send adjusted Timing Advance N
TA, newGive the base station, described N
TA, newBe N
TA, old+ (N
TA1-31) * 16+N
TA2, wherein, N
TA, oldSend to the adjusted Timing Advance of base station for described subscriber equipment of last time; N
TA1The very first time lead deviant that receives for described receiving element; N
TA2Be the second Timing Advance deviant that described processing unit is determined, M is more than or equal to 2, and is integer.
12., it is characterized in that described definite Timing Advance is carried in the measurement reporting message or media interviews control messages that transmitting element sends to described base station according to each described subscriber equipment of claim 9 to 11.
13., it is characterized in that the indication of described notice reporting Timing Advance is carried in the wireless resource control connection reconfiguration message of described receiving element reception according to claim 10 or 11 described subscriber equipmenies.
14. a system is characterized in that, comprises the base station, described base station is used to send notifying user equipment and reports the indication of Timing Advance to described subscriber equipment; And, receive the Timing Advance that described subscriber equipment sends, and keep synchronously according to described Timing Advance and described subscriber equipment.
15. system according to claim 14 is characterized in that,
Described base station specifically is used for transmission time information and first indication information is given described subscriber equipment, described temporal information is the cycle of the described user equipment to report Timing Advance of indication, and described first indication information is used to indicate the periodic report described Timing Advance of described subscriber equipment according to described temporal information indication; Perhaps,
Described base station specifically is used to send second indication information to described subscriber equipment, and described second indication information is used to indicate described subscriber equipment after adjusting Timing Advance, reports adjusted Timing Advance.
16. system according to claim 15 is characterized in that, the described temporal information and first indication information are carried in the wireless resource control connection reconfiguration message; Perhaps,
Described second indication information is carried in the described wireless resource control connection reconfiguration message.
17. system according to claim 14 is characterized in that, described base station receives the measurement reporting message that described subscriber equipment sends, and described measurement reporting message comprises described Timing Advance; Perhaps,
Described base station receives the media interviews control messages that described subscriber equipment sends, and described media interviews control messages comprises described Timing Advance.
18. according to the arbitrary described system of claim 14 to 17, it is characterized in that described system also comprises subscriber equipment, described subscriber equipment is used to receive the indication that described base station notifying user equipment reports Timing Advance; And, the Timing Advance of determining is sent to described base station according to described indication.
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