CN106332263A - Terminal mode switching method and a terminal - Google Patents
Terminal mode switching method and a terminal Download PDFInfo
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- CN106332263A CN106332263A CN201510372767.1A CN201510372767A CN106332263A CN 106332263 A CN106332263 A CN 106332263A CN 201510372767 A CN201510372767 A CN 201510372767A CN 106332263 A CN106332263 A CN 106332263A
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- 238000005516 engineering process Methods 0.000 description 2
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- 230000000977 initiatory effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
The invention discloses a terminal mode switching method and a terminal. The method may comprise the steps of receiving a physical shared channel signal and a secondary synchronization channel signal sent by a base station and carrying out time offset estimation when the terminal is in an LTE slave mode, thereby obtaining a time offset estimation value corresponding to a measured cell; adjusting the time of receiving data by the terminal according to the time offset estimation value when the terminal is switched from the LTE slave mode to a master mode; and receiving system messages sent by the base station according to the adjusted time of receiving the data and carrying out cell residence. Through application of the method, the time of switching the terminal from the LTE salve mode to the master mode can be reduced, and the terminal can be switched from the LTE salve mode to the master mode rapidly.
Description
Technical field
The present invention relates to communication technology field, particularly to a kind of terminal pattern changing method and terminal.
Background technology
In LTE system, cell information is passed through primary synchronization channel (Physical Shared by base station
Channel, PSCH) and auxiliary synchronization channel (Secondary Synchronization Channel, SSCH)
It is sent to terminal UE.Wherein, the information that PSCH carries is master sync signal (Physical Shared
Channel Signal, PSS), the information that SSCH carries is auxiliary synchronous signals (Secondary
Synchronization Channel Signal, SSS).The UE a series of process by self, can obtain
The information of PSCH and SSCH transmission, deadline and the synchronization of frequency, and then receive the broadcast of base station
Information, obtains the system information of base station, completes the process of cell searching.
In mobile communication system, due to the mobility of terminal, how general cause the signal received there are
Strangle frequency displacement.Further, the crystal oscillator frequency in the initial time of accessing terminal to network, terminal and base station may go out
The biggest error.Both of these case can cause the frequency deviation of the data that terminal receives relatively big, and the depositing of frequency deviation
So that terminal receives the moment generation deviation of data, inclined when i.e. causing.
Further, since terminal is when LTE is from pattern, greatly all in sleep state, now, terminal is held
The time interval that row synchronization timing is followed the tracks of is longer, causes the synchronization timing between terminal and base station to be forbidden, also
Can cause terminal time inclined.
Time in the presence of terminal partially, may be such that terminal cannot correctly demodulate the system message that base station sends,
Ultimately result in described terminal when being switched to holotype by LTE from pattern, it is difficult to resident under LTE pattern
Community.Therefore, support LTE pattern multimode terminal when being switched to holotype by LTE from pattern,
During cell searching, generally carry out time offset estimation, enter with the moment to described terminal reception data
Row sum-equal matrix, reduces system interference, is last successfully received the system message that base station sends, and resident to LTE
Community under pattern.
But, support at present the multimode terminal of LTE pattern by LTE after pattern switches to holotype,
Need the long period could success the most resident to optimum subdistrict, affect user's use to described terminal.
Summary of the invention
The problem to be solved in the present invention is how to realize the multimode terminal supporting LTE pattern by LTE from pattern
Switch to being switched fast of holotype.
Embodiments providing a kind of terminal pattern changing method, described method includes:
When described terminal is in LTE from pattern, receive master sync signal and auxiliary synchronization letter that base station sends
Number and carry out time offset estimation, it is thus achieved that the time offset estimation value corresponding with measured community；
When described terminal is switched to holotype by LTE from pattern, according to described time offset estimation value, to institute
The moment stating terminal reception data is adjusted；
According to adjust after receptions data reception described in base station transmission system message and carry out community
Resident.
Alternatively, when described terminal is in LTE from pattern, also include: according to default time interval
LTE clock from pattern is calibrated.
Alternatively, described according to default time interval, LTE clock from pattern is calibrated, bag
Include:
Use the clock under LTE holotype and according to default time interval to LTE clock from pattern
Calibrate.
Alternatively, the clock frequency under described LTE holotype is 32K HZ, and described LTE is from pattern
Clock frequency be 26M HZ.
Alternatively, it is thus achieved that after the time offset estimation value corresponding with described measured community, also include:
In the cell list of the described measured community that described time offset estimation value is saved in respectively correspondence.
Master sync signal that described reception base station sends and auxiliary synchronous signals carry out time offset estimation, it is thus achieved that with
The time offset estimation value that measured community is corresponding, including:
Time offset estimation is carried out, it is thus achieved that corresponding with described measured community according to the master sync signal received
The integer part of time offset estimation value；
Time offset estimation is carried out, it is thus achieved that corresponding with described measured community according to the auxiliary synchronous signals received
The fractional part of time offset estimation value；
It is added corresponding with the fractional part of time offset estimation value for the integer part of obtained time offset estimation value, makees
Time offset estimation value for corresponding described measured community.
The embodiment of the present invention additionally provides a kind of terminal, and described terminal includes:
Receive unit, be suitable to when described terminal is in LTE from pattern, receive the reception base that base station sends
Stand send master sync signal and auxiliary synchronous signals；
Time offset estimation unit, is suitable to the signal according to described reception unit receives and carries out time offset estimation, obtain
Time offset estimation value that must be corresponding with measured community；
Adjustment unit, is suitable to when described terminal is switched to holotype by LTE from pattern, according to time described
Estimated value partially, was adjusted the moment of described terminal reception data；
Resident element, is suitable to the system that base station described in the reception according to the reception data after adjusting sends
Message to carry out community resident.
Alternatively, described terminal also includes: alignment unit, is suitable to be in LTE from pattern in described terminal
Time, according to default time interval, LTE clock from pattern is calibrated.
Alternatively, clock under described alignment unit is adapted in use to LTE holotype according to the default time
It is spaced and LTE clock from pattern is calibrated.
Alternatively, the clock frequency under described LTE holotype is 32K HZ, and described LTE is from pattern
Clock frequency be 26M HZ.
Alternatively, described terminal also includes: memory element, is suitable to preserve described time offset estimation value respectively
In the cell list of corresponding described measured community.
Alternatively, described time offset estimation unit includes:
First time offset estimation subelement, is suitable to the master sync signal according to receiving and carries out time offset estimation, obtain
The integer part of time offset estimation value that must be corresponding with described measured community；
Second time offset estimation subelement, is suitable to the auxiliary synchronous signals according to receiving and carries out time offset estimation, obtain
The fractional part of time offset estimation value that must be corresponding with described measured community；
Arithmetic element, is suitable to the fractional part of the integer part by obtained time offset estimation value and time offset estimation value
Correspondence is divided to be added, as the time offset estimation value of corresponding described measured community.
Compared with prior art, technical scheme at least has the advantage that
By carrying out time offset estimation when terminal is in LTE from pattern, and then measured community can be obtained
Time offset estimation value, such that it is able to when described terminal is switched to holotype by LTE from pattern, according to institute
The time offset estimation value obtained, is adjusted the moment of described terminal reception data, the most successfully resides in
Community under LTE pattern, and when need not carry out when described terminal is switched to holotype by LTE from pattern
Partially estimate, therefore can reduce terminal and be switched to the time of holotype by LTE from pattern, it is achieved terminal by
LTE switches to being switched fast of holotype from pattern.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of terminal pattern changing method in the embodiment of the present invention；
Fig. 2 is the structural representation of a kind of terminal in the embodiment of the present invention；
Fig. 3 is the structural representation of a kind of time offset estimation unit in the embodiment of the present invention.
Detailed description of the invention
Due to the existence of frequency deviation, and the reason such as the synchronization timing between terminal and base station is inaccurate, cause institute
State when terminal produces inclined.At present, the multimode terminal supporting LTE pattern is generally being switched from pattern by LTE
To carrying out time offset estimation during holotype.This kind of mode switching method, although can be the most resident to LTE mould
Community under formula, but need the longer time, affect user's use to described terminal.
For the problems referred to above, The embodiment provides a kind of terminal pattern changing method, described side
Method by carrying out time offset estimation when terminal is in LTE from pattern, and then can obtain measured community
Time offset estimation value, such that it is able to when described terminal is switched to holotype by LTE from pattern, according to being obtained
The time offset estimation value obtained, is adjusted the moment of described terminal reception data, the most successfully resides in LTE
Community under pattern, and partially estimate when need not carry out when described terminal is switched to holotype by LTE from pattern
Meter, therefore can reduce terminal and be switched to the time of holotype by LTE from pattern, it is achieved terminal is by LTE
Being switched fast of holotype is switched to from pattern.
Understandable, below in conjunction with the accompanying drawings for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from
The specific embodiment of the present invention is described in detail.
As it is shown in figure 1, embodiments provide a kind of terminal pattern changing method, described method can
To comprise the steps:
Step 11, when described terminal is in LTE from pattern, receive base station send master sync signal and
Auxiliary synchronous signals also carries out time offset estimation, it is thus achieved that the time offset estimation value corresponding with measured community.
It should be noted that in an embodiment of the present invention, described terminal includes but not limited to mobile phone, pen
The computer equipment that the equipment such as note basis, panel computer and vehicle-mounted computer use in movement.Described terminal
Can communicate with base station, described communication includes the signal receiving base station transmission and sends letter to base station
Number etc..
It should be noted that in embodiments of the invention, described terminal, in addition to supporting LTE pattern, also may be used
With one or more in other communication patterns such as support TD-SCDMA, WCDMA and GSM.
Wherein, described holotype is to grasp wireless signal transmission and corresponding the communicating of communication system receiving control
Pattern, now, other patterns in addition to holotype are from pattern.Such as, language is performed when described terminal
During sound business, GSM is holotype, and other patterns are from pattern.When described terminal performs data service
Time, LTE pattern is holotype, and other patterns are from pattern.The communication system corresponding relative to this pattern,
Other communication systems are different system.
When described terminal is in LTE from pattern, by being in the different system application time sheet of holotype,
And then PSS, SSS and the cell reference signals that base station sends can be received in the timeslice that application is arrived
(Cell Reference Signal, CellRS).Described terminal can be entered according to PSS and SSS received
The synchronization of row community, carries out the measurement of community according to PSS, SSS and the CellRS received.The present invention
Embodiment in, described terminal can also carry out time offset estimation according to PSS and SSS that receive, obtains
Time offset estimation value that must be corresponding with measured community.
Wherein, described terminal, according to PSS and SSS received, can use multiple method inclined when carrying out
Estimate, the most no matter use which kind of method to carry out time offset estimation, be not construed as limiting the invention, and
All within protection scope of the present invention.
In one embodiment of the invention, first can carry out time offset estimation according to the PSS received, it is thus achieved that with
The integer part of the time offset estimation value that described measured community is corresponding, further according to the auxiliary synchronous signals received
Carry out time offset estimation, it is thus achieved that the fractional part of the time offset estimation value corresponding with described measured community, finally
By the integer part of obtained time offset estimation value and the fractional part of time offset estimation value according to corresponding measured
Community is added, as the time offset estimation value of corresponding described measured community.
For the ease of using the time offset estimation value of the measured community of correspondence, an enforcement of the present invention exactly
In example, can be after obtaining the time offset estimation value corresponding with described measured community, by described time offset estimation
In the cell list of the described measured community that value is saved in correspondence respectively.
Step 12, when described terminal is switched to holotype by LTE from pattern, according to described time offset estimation
Value, was adjusted the moment of described terminal reception data.
Step 13, according to the system message of base station transmission described in the reception of the reception data after adjusting also
Carry out community resident.
Time when it is present partially, terminal may be affected and correctly demodulate the system message that base station sends, cause institute
State terminal and cannot successfully reside in the community under LTE pattern, or need the long period could be resident to LTE
Community under pattern.Due to described terminal be in LTE from pattern time measured community, with described terminal
It is in community measured during LTE holotype identical, therefore, when described terminal is in LTE from pattern,
Obtained time offset estimation value can be utilized, to described terminal receive data moment carry out time partially adjust.
When described terminal is switched to holotype by LTE from pattern, connect according to the moment of the reception data after adjusting
Receive system message that described base station sends and to carry out community resident.
In being embodied as, according to the time offset estimation value obtained, described terminal is received the moment of data
When partially adjusting when carrying out, can be according to the time offset estimation value obtained, to the sky between described terminal base station
The moment of the reception data of mouth is adjusted, inclined during to reach to carry out the moment of described terminal reception data
The purpose adjusted.Can also be according to the time offset estimation value obtained, to the institute between described terminal and base station
State the frame number eating dishes without rice or wine to receive data to be adjusted, such as reduce or the frame of reception data of eating dishes without rice or wine described in expanding
Number, the purpose partially adjusted during to reach and the moment of described terminal reception data is carried out.
In being embodied as, multiple method can be used partially to adjust when carrying out, the present invention is not restricted.Example
As, the time offset estimation value obtained can be converted to the time control signal of correspondence, and then by described
Time control signal to corresponding component time be partially controlled.It is understood that specifically no matter what uses
The mode of kind adjusts when realizing partially, is not construed as limiting the invention, and all in protection scope of the present invention
Within.
It should be noted that described terminal is switched to holotype by LTE from pattern, it can be described terminal
LTE is switched to by any one in other communication patterns such as TD-SCDMA, WCDMA and GSM
Pattern.Such as, when initiating speech business, triggering terminal switches to GSM mode, during conclusion sound business,
LTE pattern is switched to by GSM mode.
So that the moment that described terminal receives data is more accurate, described method can also include:
Step 14 (not shown), carries out school according to default time interval to LTE clock from pattern
Accurate.
As it was previously stated, when described terminal be in LTE from pattern time, greatly all in sleep state, perform
The time interval that synchronization timing is followed the tracks of is longer, and cause often occurring between described terminal and base station is synchronization fixed
Time inaccurate situation, inclined when causing described terminal.Therefore, according to default time interval to LTE from mould
Clock under formula is calibrated, keep described terminal in LTE stability of clock from pattern, thus can
To improve the accuracy of synchronization timing between described terminal and base station, improve cause therefrom time inclined.
In being embodied as, can use various ways that LTE clock from pattern is calibrated.Example
As, it is possible to use clock under LTE holotype and according to default time interval to LTE from pattern
Clock is calibrated.Wherein, the clock frequency of described terminal clock under LTE holotype is usually 26M
HZ, the clock frequency at LTE clock from pattern is usually 32K HZ.When described terminal is in LTE
Time from pattern, it is possible to use clock frequency is the clock of 26M HZ according to default time interval pair
Frequency is that the clock of 32K HZ is calibrated.
It should be noted that described default time interval can be set according to practical situation, herein
It is not restricted, as long as synchronization timing between described terminal and base station can be improved according to default time interval
Accuracy.Such as, described default time interval could be arranged to 20ms, i.e. every 20ms pair
Described terminal clock under LTE holotype carries out calibrating once.
As shown in the above, in the embodiment of the present invention provide terminal pattern switching method, by
Described terminal is in LTE and carries out time offset estimation when pattern, and obtains the time offset estimation value of measured community,
Such that it is able to when described terminal is switched to holotype by LTE from pattern, according to the time offset estimation obtained
Value, the moment that described terminal receives data is adjusted, and the most successfully reside under LTE pattern is little
District, and time offset estimation need not be carried out when described terminal is switched to holotype by LTE from pattern, therefore may be used
The time of holotype is switched to from pattern by LTE, it is achieved terminal is switched from pattern by LTE with minimizing terminal
To being switched fast of holotype.
In order to make those skilled in the art be more fully understood that and realize the present invention, below to above-mentioned terminal pattern
The device that the method for switching is corresponding is described in detail.
As in figure 2 it is shown, the embodiment of the present invention provides a kind of terminal 20, described terminal may include that reception
Unit 21, time offset estimation unit 22, adjustment unit 23 and resident element 24.
Wherein, described reception unit 21 is suitable to when described terminal 20 is in LTE from pattern, receives base
Stand PSS and SSS sent.Described time offset estimation unit 22 is suitable to receive according to described reception unit 21
To signal carry out time offset estimation, it is thus achieved that the time offset estimation value corresponding with measured community.Described adjustment is single
Unit 23 is suitable to when described terminal 20 is switched to holotype by LTE from pattern, according to described time offset estimation
Value, was adjusted the moment of described terminal reception data.After described resident element 24 is suitable to according to adjusting
Reception data reception described in the system message that sends of base station to carry out community resident.
In being embodied as, described terminal 20 can also include memory element 25.Described memory element 25
Be suitable to described time offset estimation value be saved in respectively in the cell list of the described measured community of correspondence.This
Sample, when the moment that described terminal receives data is adjusted by described adjustment unit 23, can be direct
Obtain from the cell list of corresponding described measured community when time offset estimation value is carried out and partially adjust.
In being embodied as, described 20 can also include alignment unit 26 (not shown).Described calibration is single
Unit 26 is suitable to when described terminal is in LTE from pattern, according to default time interval to LTE from mould
Clock under formula is calibrated.In one embodiment of this invention, described alignment unit 26 is adapted in use to LTE
LTE clock from pattern is also calibrated by clock under holotype according to default time interval.Its
In, the clock frequency under described LTE holotype is 32K HZ, described LTE time clock frequency from pattern
Rate is 26M HZ.
In being embodied as, as it is shown on figure 3, described time offset estimation unit 30 may include that when first inclined
Estimate subelement the 31, second time offset estimation subelement 32 and arithmetic element 33.Wherein, described first
The PSS that time offset estimation subelement 31 is suitable to according to receiving carries out time offset estimation, it is thus achieved that measured with described
The integer part of the time offset estimation value that community is corresponding.Described second time offset estimation subelement 32 is suitable to according to connecing
The SSS received carries out time offset estimation, it is thus achieved that the decimal of the time offset estimation value corresponding with described measured community
Part.Described arithmetic element 33 is suitable to the integer part of obtained time offset estimation value and time offset estimation value
Fractional part is added according to corresponding measured community, as corresponding described measured community time partially estimate
Evaluation.
As shown in the above, the terminal 20 provided in the embodiment of the present invention, by time offset estimation unit 22
Carry out time offset estimation when described terminal 20 is in LTE from pattern, and obtain measured community time partially estimate
Evaluation, such that it is able to when described terminal is switched to holotype by LTE from pattern, by described adjustment unit
The moment that described terminal receives data, according to the time offset estimation value obtained, is adjusted, finally by 23
Successfully reside in the community under LTE pattern, and need not be switched to from pattern by LTE in described terminal 20
Carry out time offset estimation during holotype, therefore can reduce terminal 20 and be switched to holotype by LTE from pattern
Time, it is achieved terminal 20 is switched to being switched fast of holotype by LTE from pattern.
It should be noted that in an embodiment of the present invention, described terminal includes but not limited to mobile phone, pen
The computer equipment that the equipment such as note basis, panel computer and vehicle-mounted computer use in movement.Described terminal
Can communicate with base station, described communication includes the signal receiving base station transmission and sends letter to base station
Number etc..
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment
Suddenly the program that can be by completes to instruct relevant hardware, and this program can be stored in a computer can
Reading in storage medium, storage medium may include that ROM, RAM, disk or CD etc..
Although present disclosure is as above, but the present invention is not limited to this.Any those skilled in the art,
Without departing from the spirit and scope of the present invention, all can make various changes or modifications, therefore the guarantor of the present invention
The scope of protecting should be as the criterion with claim limited range.
Claims (12)
1. a terminal pattern changing method, it is characterised in that including:
When described terminal is in LTE from pattern, receive master sync signal and auxiliary synchronization letter that base station sends
Number and carry out time offset estimation, it is thus achieved that the time offset estimation value corresponding with measured community；
When described terminal is switched to holotype by LTE from pattern, according to described time offset estimation value, to institute
The moment stating terminal reception data is adjusted；
According to adjust after receptions data reception described in base station transmission system message and carry out community
Resident.
2. terminal pattern changing method as claimed in claim 1, it is characterised in that when described terminal is in LTE
When pattern, also include: according to default time interval, LTE clock from pattern is calibrated.
3. terminal pattern changing method as claimed in claim 2, it is characterised in that described according to time default
Between be spaced LTE clock from pattern calibrated, including:
Use the clock under LTE holotype and according to default time interval to LTE clock from pattern
Calibrate.
4. terminal pattern changing method as claimed in claim 3, it is characterised in that under described LTE holotype
Clock frequency be 32K HZ, described LTE clock frequency from pattern is 26M HZ.
5. terminal pattern changing method as claimed in claim 1, it is characterised in that obtain measured with described
After the time offset estimation value that community is corresponding, also include:
In the cell list of the described measured community that described time offset estimation value is saved in respectively correspondence.
6. terminal pattern changing method as claimed in claim 1, it is characterised in that described reception base station sends
Master sync signal and auxiliary synchronous signals carry out time offset estimation, it is thus achieved that inclined time corresponding with measured community
Estimated value, including:
Time offset estimation is carried out, it is thus achieved that corresponding with described measured community according to the master sync signal received
The integer part of time offset estimation value；
Time offset estimation is carried out, it is thus achieved that corresponding with described measured community according to the auxiliary synchronous signals received
The fractional part of time offset estimation value；
It is added corresponding with the fractional part of time offset estimation value for the integer part of obtained time offset estimation value, makees
Time offset estimation value for corresponding described measured community.
7. a terminal, it is characterised in that including:
Receive unit, be suitable to when described terminal is in LTE from pattern, receive the reception base that base station sends
Stand send master sync signal and auxiliary synchronous signals；
Time offset estimation unit, is suitable to the signal according to described reception unit receives and carries out time offset estimation, obtain
Time offset estimation value that must be corresponding with measured community；
Adjustment unit, is suitable to when described terminal is switched to holotype by LTE from pattern, according to time described
Estimated value partially, was adjusted the moment of described terminal reception data；
Resident element, is suitable to the system that base station described in the reception according to the reception data after adjusting sends
Message to carry out community resident.
8. terminal as claimed in claim 7, it is characterised in that also include: alignment unit, be suitable to described
Terminal is in LTE when pattern, according to default time interval, LTE clock from pattern is carried out school
Accurate.
9. terminal as claimed in claim 8, it is characterised in that described alignment unit is adapted in use to the main mould of LTE
LTE clock from pattern is also calibrated by clock under formula according to default time interval.
10. terminal as claimed in claim 9, it is characterised in that the clock frequency under described LTE holotype
It is 26M HZ for 32K HZ, the described LTE clock frequency from pattern.
11. terminals as claimed in claim 7, it is characterised in that also include: memory element, be suitable to institute
State in the cell list of the described measured community that time offset estimation value is saved in correspondence respectively.
12. terminals as claimed in claim 11, it is characterised in that described time offset estimation unit includes:
First time offset estimation subelement, is suitable to the master sync signal according to receiving and carries out time offset estimation, obtain
The integer part of time offset estimation value that must be corresponding with described measured community；
Second time offset estimation subelement, is suitable to the auxiliary synchronous signals according to receiving and carries out time offset estimation, obtain
The fractional part of time offset estimation value that must be corresponding with described measured community；
Arithmetic element, is suitable to the fractional part of the integer part by obtained time offset estimation value and time offset estimation value
Correspondence is divided to be added, as the time offset estimation value of corresponding described measured community.
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| CN201510372767.1A CN106332263B (en) | 2015-06-30 | 2015-06-30 | Terminal pattern switching method and terminal |
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| CN115715003A (en) * | 2023-01-09 | 2023-02-24 | 四川创智联恒科技有限公司 | Time offset adjusting method and system for high-speed mobile communication system |
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|---|---|---|---|---|
| CN115715003A (en) * | 2023-01-09 | 2023-02-24 | 四川创智联恒科技有限公司 | Time offset adjusting method and system for high-speed mobile communication system |
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| CN106332263B (en) | 2019-09-27 |
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