CN106034354A - User equipment uplink synchronization time adjusting method and apparatus thereof - Google Patents
User equipment uplink synchronization time adjusting method and apparatus thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000008859 change Effects 0.000 claims abstract description 27
- 238000012163 sequencing technique Methods 0.000 claims description 40
- 230000008685 targeting Effects 0.000 claims description 40
- 230000001360 synchronised effect Effects 0.000 claims description 27
- 238000012545 processing Methods 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention provides a user equipment uplink synchronization time adjusting method and an apparatus thereof. The method comprises the following steps of receiving a system message sent by a base station by user equipment, wherein the system message includes configuration information; according to the configuration information, determining a time point for the user equipment to sent a leading sequence signal; according to the time point and a preset time initial lead change step, determining time adjusting information; and according to the time adjusting information, adjusting the time point for the user equipment to sent the leading sequence signal. By using the user equipment uplink synchronization time adjusting method provided in the invention, through the preset time initial lead change step, the time point for the user equipment to sent the leading sequence is dynamically adjusted and an access success rate of equipment which is far away from the base station is effectively increased.
Description
Technical field
The present invention relates to the communications field, the method particularly relating to the adjustment of a kind of subscriber equipment uplink synchronous time
And device.
Background technology
In a wireless communication system, before subscriber equipment (User Equipment, UE) and base station communication
Down-going synchronous to be completed, completes uplink synchronous, i.e. Stochastic accessing the most further.Connect at random
Entering is one of most important flow process in wireless communication system, and it is responsible for subscriber equipment in a network initial
Access, set up the task such as access of uplink synchronous, up resource request or switching.The mistake of Stochastic accessing
Journey is to ensure that the decision link that communication is set up, and is also the key factor affecting Consumer's Experience and systematic function.
The process of existing Stochastic accessing is all to carry out the transmission of RACH with set time point, as
The ultimate range that really distance of access terminal and base station has been supported beyond base station search window, this feelings
The transmission of Stochastic accessing under condition, can be because the power of test deficiency of the base station targeting sequencing to accessing finally be led
Cause the failure accessed.
Summary of the invention
The method and apparatus that a kind of subscriber equipment uplink synchronous time that the present invention provides adjusts, in order to effectively
Solve to cause connecing at random to targeting sequencing power of test beyond base station with base station distance due to subscriber equipment
The failure entered.
First aspect, the method that the invention provides the adjustment of a kind of subscriber equipment uplink synchronous time, described
Method includes:
Subscriber equipment receives the system message that base station sends, and described system message includes configuration information；
Determine that described subscriber equipment sends the time point of targeting sequencing signal according to described configuration information；
Time adjustment information is determined according to described time point and the Timing Advance change step preset；
According to described time adjustment information, the time that described subscriber equipment sends targeting sequencing signal clicks on
Row sum-equal matrix.
Preferably, described according to described time point and preset Timing Advance change step determine that the time adjusts
Whole information, specifically includes:
The secondary of described base station is accessed according to described default Timing Advance change step and described subscriber equipment
Number, it is thus achieved that compensate the time；
Described time adjustment information is determined according to described compensation time and described time point.
Preferably, described access according to described default Timing Advance change step and described subscriber equipment
The number of times of described base station, it is thus achieved that compensate the time, including:
According to the equation below acquisition compensation time:
TA=△ T*N
Wherein, TA is the compensation time；△ T is default Timing Advance change step；N is described user
Equipment sends the number of times of described targeting sequencing signal.
Preferably, described according to the described compensation time and described time point, determine described time adjustment information,
Including:
Described time adjustment information is determined according to equation below:
Tstart=Tint+TA
Wherein, TstartFor time adjustment information；TintAccording to the agreement set up of described subscriber equipment and base station
The described subscriber equipment obtained sends the time point of described targeting sequencing signal；TA is the compensation time.
Second aspect, the present invention provides the device that a kind of subscriber equipment uplink synchronous time adjusts, described dress
Put and include:
Receiving unit, for receiving the system message that base station sends, described system message includes configuration information；
According to described configuration information, processing unit, for determining that described subscriber equipment sends targeting sequencing signal
Time point；Time adjustment information is determined according to described time point and the Timing Advance change step preset；
According to described time adjustment information, the time point that described subscriber equipment sends targeting sequencing signal is adjusted
Whole.
Preferably, described processing unit specifically for,
The secondary of described base station is accessed according to described default Timing Advance change step and described subscriber equipment
Number, it is thus achieved that compensate the time；
Described time adjustment information is determined according to described compensation time and described time point.
Preferably, described processing unit specifically for, according to equation below obtain the compensation time:
TA=△ T*N
Wherein, TA is the compensation time；△ T is default Timing Advance change step；N is described user
Equipment sends the number of times of described targeting sequencing signal.
Preferably, described processing unit specifically for, determine described time adjustment information according to equation below:
Tstart=Tint+TA
Wherein, TstartFor time adjustment information；TintAccording to the agreement set up of described subscriber equipment and base station
The described subscriber equipment obtained sends described targeting sequencing signal time point；TA is the compensation time.
Therefore, the method and apparatus that a kind of subscriber equipment uplink synchronous time that the present invention provides adjusts is logical
The number of times crossing Timing Advance change step and the access preset carries out time benefit to the time of Stochastic accessing
Repaying, the dynamic subscriber equipment that adjusts sends the time point of targeting sequencing, thus overcomes due to subscriber equipment
Beyond base station, access targeting sequencing is received the detection range of power of test with base station distance and cause connecing at random
Entering the situation of failure, be effectively increased distance base station equipment farther out is successfully accessed rate.
Accompanying drawing explanation
The flow process of a kind of subscriber equipment uplink synchronous time adjusting method that Fig. 1 provides for the embodiment of the present invention
Figure；
The signal of a kind of subscriber equipment uplink synchronous time adjusting device that Fig. 2 provides for the embodiment of the present invention
Figure.
Detailed description of the invention
The method that the present invention provides is applied to Long Term Evolution (Long Term Evolution, LTE) network
Technology, when user equipment (UE) selects suitable community to carry out resident, subscriber equipment and base station are set up descending
Synchronize, it is thus achieved that frame synchronization and system broadcast message；Complete between subscriber equipment and base station down-going synchronous it
After, initiate initial Stochastic accessing to base station, only when, after Stochastic accessing success, subscriber equipment is being set up
Uplink synchronous on the basis of carry out data transmission.In order to make the letter of request uplink synchronous that subscriber equipment sends
Number can regulation time in be arrived by the retrieval window search of base station, therefore to subscriber equipment send request on
The time point of line synchronising signal is adjusted.
Below by drawings and Examples, technical scheme is described in further detail.
The flow process of a kind of subscriber equipment uplink synchronous time adjusting method that Fig. 1 provides for the embodiment of the present invention
Figure.
As it is shown in figure 1, a kind of subscriber equipment uplink synchronous time adjusting method that the embodiment of the present invention provides
Comprise the steps:
Step 101, subscriber equipment receives the system message that base station sends.
Specifically, described system message includes that configuration information, described configuration information can be specially up-downgoing
Configuration s_sub_sfn_config and Physical Random Access Channel (Physical random access
Channel, PRACH) configuration index prach_configindex.
On the basis of user sets up down-going synchronous with base station, all users in whole community are set by base station
Preparation send system message；After subscriber equipment receives system message, send request uplink synchronous to base station
Signal, in order to base station search in the range of default power of test subscriber equipment send request up with
The signal of step, obtains the subscriber equipment attempting to be attached with base station.Wherein, system message includes joining
Confidence ceases.
According to described configuration information, step 102, determines that described subscriber equipment sends the time of targeting sequencing signal
Point.
Specifically, described targeting sequencing signal is specially subscriber equipment and sends the signal of request uplink synchronous.
Subscriber equipment resolves configuration information, and the agreement set up according to subscriber equipment with base station, obtains subscriber equipment
Send the time point T of described targeting sequencing signalint。
According to described time point and the Timing Advance change step preset, step 103, determines that the time adjusts letter
Breath.
Specifically, a predetermined suitable Timing Advance change step △ T.According to described default
Timing Advance change step accesses the number of times of described base station with described subscriber equipment, it is thus achieved that compensate the time；
Described time adjustment information is determined according to described compensation time and described time point.
According to described targeting sequencing signal, described base station determines that the process of time adjustment information can be specially root
According to equation below acquisition compensation time and time adjustment information:
TA=△ T*N
Tstart=Tint+TA
Wherein, TA is the compensation time；△ T is default Timing Advance change step；N is described user
Equipment sends the number of times of described targeting sequencing signal, the i.e. number of times of Stochastic accessing；TstartFor time adjustment information,
I.e. during Stochastic accessing, the actual time point sending targeting sequencing signal of subscriber equipment；TintAccording to
The described subscriber equipment that the agreement that described subscriber equipment is set up with base station obtains sends described targeting sequencing signal
Time point.
TintBase station can be specially according to targeting sequencing signal, the agreement set up with subscriber equipment by base station
Calculating, the subscriber equipment of acquisition sends the time point of described targeting sequencing signal.N is less than or equal to presetting maximum
Stochastic accessing times N max.
Step 104, according to described time adjustment information, sends targeting sequencing signal to described subscriber equipment
Time point is adjusted.Specifically, described time adjustment information be specially subscriber equipment actual send leading
The time point of sequence signal.The time point that subscriber equipment obtains according to step 103 sends targeting sequencing signal,
In order to set up uplink synchronous with base station.Within the default time, if the targeting sequencing that subscriber equipment sends
Signal is not arrived by base station search, and subscriber equipment is retransmitting targeting sequencing signal.Therefore, the present invention implements
The method that a kind of subscriber equipment uplink synchronous time that example provides adjusts, is walked by default variable quantity in advance
Number of times that is long and that access carries out time bias to the time of Stochastic accessing, and the dynamic subscriber equipment that adjusts sends
The time point of targeting sequencing, solves owing to subscriber equipment and base station distance exceed base station to access lead sequence
Row receive the detection range of power of test and cause the situation of random access failure, are effectively increased distance base
That stands equipment farther out is successfully accessed rate.
The device signal that a kind of subscriber equipment uplink synchronous time that Fig. 2 provides for the embodiment of the present invention adjusts
Figure.
As in figure 2 it is shown, a kind of subscriber equipment uplink synchronous time adjusting device that the embodiment of the present invention provides
Including: receiver module 201, adjusting module 202.
Receiving unit 201, for receiving the system message that base station sends, described system message includes configuration letter
Breath.
According to described configuration information, processing unit 202, for determining that described subscriber equipment sends targeting sequencing letter
Number time point；Determine that the time adjusts letter according to described time point and the Timing Advance change step preset
Breath；According to described time adjustment information, the time that described subscriber equipment sends targeting sequencing signal clicks on
Row sum-equal matrix.
Described processing unit 202 specifically for, according to described default Timing Advance change step and institute
State subscriber equipment and access the number of times of described base station, it is thus achieved that compensate the time；According to the described compensation time with described
Time point determines described time adjustment information.
Obtain the compensation time according to equation below and determine time adjustment information:
TA=△ T*N
Tstart=Tint+TA
Wherein, TA is the compensation time；△ T is default Timing Advance change step；N is described user
Equipment sends the number of times of described targeting sequencing signal；TstartProcess for time adjustment information, i.e. Stochastic accessing
In, the actual time point sending targeting sequencing signal of subscriber equipment；TintAccording to described subscriber equipment and base
The described subscriber equipment that the agreement set up of standing obtains sends described targeting sequencing signal time point.
Described device also includes sending module 203, for according to time adjustment information, sends targeting sequencing letter
Number, it is connected in order to attempt to set up uplink synchronous with base station.
Therefore, the device that a kind of subscriber equipment uplink synchronous time that the embodiment of the present invention provides adjusts is logical
Cross the Timing Advance change step that processing unit passes through to preset, dynamically adjust subscriber equipment and send leading sequence
The time point of row, is effectively increased the success rate of subscriber equipment Stochastic accessing.
Professional should further appreciate that, describes in conjunction with the embodiments described herein
The unit of each example and algorithm steps, it is possible to come with electronic hardware, computer software or the combination of the two
Realize, in order to clearly demonstrate the interchangeability of hardware and software, the most according to function
Generally describe composition and the step of each example.These functions are come with hardware or software mode actually
Perform, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can be to often
Individual specifically should being used for uses different methods to realize described function, but this realization it is not considered that
Beyond the scope of this invention.
The method described in conjunction with the embodiments described herein or the step of algorithm can use hardware, process
The software module that device performs, or the combination of the two implements.Software module can be placed in random access memory
(RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable ROM,
Other form any well known in depositor, hard disk, moveable magnetic disc, CD-ROM or technical field
Storage medium in.
Above-described detailed description of the invention, is carried out the purpose of the present invention, technical scheme and beneficial effect
Further describe, be it should be understood that the foregoing is only the present invention detailed description of the invention and
, the protection domain being not intended to limit the present invention, all within the spirit and principles in the present invention, done
Any modification, equivalent substitution and improvement etc., should be included within the scope of the present invention.
Claims (8)
1. the method for a subscriber equipment uplink synchronous time adjustment, it is characterised in that described method includes:
Subscriber equipment receives the system message that base station sends, and described system message includes configuration information；
Determine that described subscriber equipment sends the time point of targeting sequencing signal according to described configuration information；
Time adjustment information is determined according to described time point and the Timing Advance change step preset；
According to described time adjustment information, the time that described subscriber equipment sends targeting sequencing signal clicks on
Row sum-equal matrix.
Method the most according to claim 1, it is characterised in that described according to described time point with pre-
If Timing Advance change step determine time adjustment information, specifically include:
The secondary of described base station is accessed according to described default Timing Advance change step and described subscriber equipment
Number, it is thus achieved that compensate the time；
Described time adjustment information is determined according to described compensation time and described time point.
Method the most according to claim 2, it is characterised in that described according to the described default time
Lead change step accesses the number of times of described base station with described subscriber equipment, it is thus achieved that compensate the time, including:
According to the equation below acquisition compensation time:
TA=△ T*N
Wherein, TA is the compensation time；△ T is default Timing Advance change step；N is described user
Equipment sends the number of times of described targeting sequencing signal.
Method the most according to claim 2, it is characterised in that described according to the described compensation time with
Described time point, determines described time adjustment information, including:
Described time adjustment information is determined according to equation below:
Tstart=Tint+TA
Wherein, TstartFor time adjustment information；TintAccording to the agreement set up of described subscriber equipment and base station
The described subscriber equipment obtained sends the time point of described targeting sequencing signal；TA is the compensation time.
5. the device of a subscriber equipment uplink synchronous time adjustment, it is characterised in that described device includes:
Receiving unit, for receiving the system message that base station sends, described system message includes configuration information；
According to described configuration information, processing unit, for determining that described subscriber equipment sends targeting sequencing signal
Time point；Time adjustment information is determined according to described time point and the Timing Advance change step preset；
According to described time adjustment information, the time point that described subscriber equipment sends targeting sequencing signal is adjusted
Whole.
Device the most according to claim 5, it is characterised in that described processing unit specifically for,
The secondary of described base station is accessed according to described default Timing Advance change step and described subscriber equipment
Number, it is thus achieved that compensate the time；
Described time adjustment information is determined according to described compensation time and described time point.
Device the most according to claim 6, it is characterised in that described processing unit specifically for,
According to the equation below acquisition compensation time:
TA=△ T*N
Wherein, TA is the compensation time；△ T is default Timing Advance change step；N is described user
Equipment sends the number of times of described targeting sequencing signal.
Device the most according to claim 6, it is characterised in that described processing unit specifically for,
Described time adjustment information is determined according to equation below:
Tstart=Tint+TA
Wherein, TstartFor time adjustment information；TintAccording to the agreement set up of described subscriber equipment and base station
The described subscriber equipment obtained sends described targeting sequencing signal time point；TA is the compensation time.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109275185A (en) * | 2017-06-06 | 2019-01-25 | 华为技术有限公司 | The method and apparatus for sending uplink information |
| CN109474986A (en) * | 2018-12-27 | 2019-03-15 | 西安电子科技大学 | Uplink synchronisation method, device, equipment, storage medium and LTE communication system |
| WO2022135565A1 (en) * | 2020-12-24 | 2022-06-30 | 中兴通讯股份有限公司 | Random access method and apparatus, and terminal, electronic device and computer-readable storage medium |
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| CN102647783A (en) * | 2012-04-19 | 2012-08-22 | 北京创毅讯联科技股份有限公司 | Control method for uplink time advance, base station, and terminal |
| CN102843778A (en) * | 2012-09-18 | 2012-12-26 | 武汉邮电科学研究院 | Time offset compensation method for PRACH (physical random access channel) of FDDLTE (frequency division duplex long-term evolution) system |
| US20130035084A1 (en) * | 2011-08-05 | 2013-02-07 | Apple Inc. | Adaptive random access channel retransmission |
| CN105307284A (en) * | 2015-11-30 | 2016-02-03 | 东莞酷派软件技术有限公司 | Random access method and user equipment |
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2015
- 2015-03-17 CN CN201510117539.XA patent/CN106034354B/en not_active Expired - Fee Related
Patent Citations (4)
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| US20130035084A1 (en) * | 2011-08-05 | 2013-02-07 | Apple Inc. | Adaptive random access channel retransmission |
| CN102647783A (en) * | 2012-04-19 | 2012-08-22 | 北京创毅讯联科技股份有限公司 | Control method for uplink time advance, base station, and terminal |
| CN102843778A (en) * | 2012-09-18 | 2012-12-26 | 武汉邮电科学研究院 | Time offset compensation method for PRACH (physical random access channel) of FDDLTE (frequency division duplex long-term evolution) system |
| CN105307284A (en) * | 2015-11-30 | 2016-02-03 | 东莞酷派软件技术有限公司 | Random access method and user equipment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109275185A (en) * | 2017-06-06 | 2019-01-25 | 华为技术有限公司 | The method and apparatus for sending uplink information |
| CN109275185B (en) * | 2017-06-06 | 2020-03-20 | 华为技术有限公司 | Method and device for sending uplink information |
| US10602534B2 (en) | 2017-06-06 | 2020-03-24 | Huawei Technologies Co., Ltd. | Uplink information sending method and apparatus |
| CN109474986A (en) * | 2018-12-27 | 2019-03-15 | 西安电子科技大学 | Uplink synchronisation method, device, equipment, storage medium and LTE communication system |
| WO2022135565A1 (en) * | 2020-12-24 | 2022-06-30 | 中兴通讯股份有限公司 | Random access method and apparatus, and terminal, electronic device and computer-readable storage medium |
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| CN106034354B (en) | 2019-07-23 |
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