CN102932904B - Method, system and device for synchronizing base station and terminal, and terminal - Google Patents

Method, system and device for synchronizing base station and terminal, and terminal Download PDF

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Publication number
CN102932904B
CN102932904B CN201110227416.3A CN201110227416A CN102932904B CN 102932904 B CN102932904 B CN 102932904B CN 201110227416 A CN201110227416 A CN 201110227416A CN 102932904 B CN102932904 B CN 102932904B
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synchronizing signal
terminal
partially
base station
synchronous
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CN102932904A (en
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陈诗军
刘敏
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ZTE Corp
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ZTE Corp
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

The invention provides a method, a system and a device for synchronizing a base station and a terminal, and the terminal. According to a set threshold of the frequency of continuously-measured time shifts in a time domain, the terminal continuously measures time shifts of synchronizing signals with the corresponding frequency, which are sent by the base station, in a frequency domain, limits each measured time shift in a time shift limited threshold, averages the limited time shifts of the synchronizing signals, determines a time shift value for synchronization correction, and performs the synchronization correction. The invention has the advantages that synchronization is performed for the time shift of each synchronizing signal, a dead zone of the synchronization correction is eliminated, and during the synchronization correction, the time shifts of the synchronizing signals are limited in the time shift limited threshold, so interference can be resisted, and influence of the interference on the synchronization correction is effectively controlled.

Description

A kind of method for realizing that base station and terminal are synchronous, system, terminal and device
Technical field
The present invention relates to wireless communication technique field, more particularly to a kind of method for realizing that base station is synchronous with terminal, system, Terminal and device.
Background technology
In a wireless communication system, effectively send and receive to ensure data, need to protect between terminal and base station Hold synchronization.Generally for the synchronicity ensured between base station and terminal, needs synchronize correction in base station and terminal room.
Fig. 1 synchronizes the process of correction, the process bag for base station in wireless communication system in prior art and terminal room Include following steps:
S101:Terminal receives the synchronizing signal that base station sends.
S102:Terminal according to the synchronizing signal for receiving, detect on frequency domain the synchronizing signal when it is inclined.
S103:Judge the synchronizing signal when partially whether more than the threshold value of setting, when judged result is to be, carry out Step S104, otherwise, carries out step S105.
S104:Terminal using detect synchronizing signal when correction is synchronized partially to base station signal.
S105:Correction is not synchronized.
According to above-mentioned steps, the when when inclined threshold in setting bigger than normal of the synchronizing signal only detected in prior art Correction is just synchronized during value, when synchronizing signal it is less than normal in setting when inclined threshold value when do not corrected, cause synchronous entangling Just there is blind area, it is impossible to effectively synchronize correction.In addition, in prior art when correction is synchronized, not accounting for doing The impact disturbed, it is impossible to which effective control interference is to the synchronous impact corrected.
The content of the invention
In view of this, the invention provides a kind of method for realizing that base station is synchronous with terminal, system, terminal and device, use There is blind area to solve existing synchronous correction, do not account for interference, it is impossible to which effective control interference is to the synchronous impact problem corrected.
The present invention provides a kind of method for realizing that base station is synchronous with terminal, and the synchronous method includes:
Terminal is sent according to the threshold value of inclined number of times when continuously measuring in time domain for setting, the continuously base station to receiving The synchronizing signal of corresponding number of times, measure on frequency domain synchronizing signal when it is inclined;
Using arrange when inclined threshold limit, limit measurement each synchronizing signal when it is inclined;
According to each synchronizing signal after restriction when partially, it is determined that synchronize the when bias of correction, and according to inclined when this Value synchronizes correction.
The present invention provides a kind of device for realizing that base station is synchronous with terminal, and described device includes:
Measurement module is received, for the threshold value of inclined number of times when continuously measuring in time domain according to setting, continuously to receiving To the synchronizing signal of corresponding number of times sent of base station, measure on frequency domain synchronizing signal when it is inclined;
Limit module, for adopt arrange when inclined threshold limit, limit measurement each synchronizing signal when it is inclined;
It is synchronous to correct module, for according to each synchronizing signal after restriction when partially, it is determined that synchronize correction when Bias, and correction is synchronized according to bias when this.
The present invention provides a kind of terminal, including said apparatus.
The present invention provides a kind of system for realizing that base station is synchronous with terminal, and the system includes above-mentioned terminal, and to described Terminal sends the base station of synchronizing signal.
The present invention provides a kind of method for realizing that base station and terminal are synchronous, system, terminal and device, terminal root in the method According to the threshold value of inclined number of times when continuously measuring in time domain of setting, the synchronizing signal continuously sent to base station is measured on frequency domain The synchronizing signal of corresponding number of times when partially, and by each measure when be limited in partially when inclined threshold limit in, then these are limited After system when be averaged partially, it is determined that synchronize correction when bias synchronize correction.Due to carrying out in the present invention When synchronous, for each synchronizing signal when be biased row, the blind area that there is no synchronous correction, and when correction is synchronized, By synchronizing signal when be limited in partially when inclined threshold limit in, therefore interference can be resisted, effective control is disturbed to synchronous correction Impact.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings:
Fig. 1 synchronizes the process of correction for base station in wireless communication system in prior art and terminal room;
The process for realizing that base station is synchronous with terminal that Fig. 2 is provided for the present invention;
Fig. 3 for the present invention provide this realize the base station detailed process synchronous with terminal;
A kind of apparatus structure schematic diagram for realizing that base station is synchronous with terminal that Fig. 4 is provided for the present invention.
Specific embodiment
In order that the technical problem to be solved, technical scheme and beneficial effect are clearer, clear, below tie Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only To explain the present invention, it is not intended to limit the present invention.
, in order to overcome the blind area of synchronous correction, opposing interference is to synchronous impact, there is provided one kind realizes base station for the present invention The method synchronous with terminal, system, terminal and device.
A kind of process for realizing that base station is synchronous with terminal that Fig. 2 is provided for the present invention, the synchronizing process are comprised the following steps:
S201:Terminal according to setting in time domain it is continuous measure when inclined number of times threshold value, the continuous base station to receiving Send corresponding number of times synchronizing signal measure on frequency domain synchronizing signal when it is inclined.
Specific in time domain, during continuous measurement, the threshold value of inclined number of times is not less than 2 in the present invention, and is limited when described partially Threshold value is less than the threshold value of inclined number of times when continuously measuring in time domain.
S202:Using arrange when inclined threshold limit, limit measurement each synchronizing signal when it is inclined.
In the present invention using the when inclined threshold limit for arranging, limit each synchronizing signal when partially, will each synchronization Signal when be limited in partially setting when inclined threshold limit within.
S203:According to each synchronizing signal after restriction when partially, it is determined that synchronize the when bias of correction, and according to this When bias synchronize correction.
It is specific in the present invention, according to each synchronizing signal after restriction when partially, it is determined that synchronize correction when Bias includes:It is determined that inclined meansigma methodss during all synchronizing signals after limiting, the meansigma methodss are defined as synchronizing correction When it is inclined.When it is determined that the restriction after all synchronizing signals when inclined meansigma methodss non-integer when, by the synchronizing signal when it is inclined Meansigma methodss round downwards, the meansigma methodss after this is rounded downwards be defined as synchronizing correction when it is inclined.As this is synchronously believed Number when be that the synchronizing signal of the corresponding number of times that the base station to continuously receiving is sent is measured on frequency domain and obtained partially, it is therefore right The synchronizing signal of the corresponding number of times of continuous measurement when be biased capable restriction, ask for inclined during the synchronizing signal after the restriction of continuous measurement Meansigma methodss, as synchronize correction when it is inclined.
In the present invention using arrange when inclined threshold limit, limit measurement each synchronizing signal when include partially:Sentence Break each measurement synchronizing signal when partially whether more than the when inclined threshold limit for arranging;When it is determined that bigger than normal during the synchronizing signal In arrange when inclined threshold limit when, by the synchronizing signal when be adjusted to partially the when inclined threshold limit of the setting;Otherwise, do not enter Row adjustment.
When synchronizing between terminal and base station, for each synchronizing signal when partially with arrange when limit partially threshold Value is compared, will be greater than arranging when inclined threshold limit synchronizing signal when be limited in partially the when inclined threshold limit of the setting Within, interference is reduced to the synchronous impact corrected.And for each synchronizing signal when be biased row, there is no synchronous correction Blind area.
Fig. 3 for the present invention provide this realize the base station detailed process synchronous with terminal, the process is comprised the following steps:
S301:Within a synchronous correction cycle, terminal is according to the threshold of inclined number of times when continuously measuring in time domain for preserving Value (threshold value of inclined number of times was equal to 5 when should continuously measure in time domain in the present embodiment), 5 that continuously base station is sent synchronization Signal, when measuring on frequency domain partially, measurement when be respectively partially 1,1,1,20,1.
S302:Terminal for each synchronizing signal of measurement when partially, compare the synchronizing signal when partially whether more than setting Put when inclined threshold limit (when in the present embodiment, inclined threshold limit is equal to 4), limit measurement each synchronizing signal when it is inclined.
Limit each synchronizing signal when it is inclined when, due to synchronizing signal when inclined 1 less than arrange when inclined threshold limit, Therefore after limiting the synchronizing signal when be 1 partially;And synchronizing signal when inclined 20 more than arrange when inclined threshold limit, therefore limit After system the synchronizing signal when be partially 4.
After restriction each synchronizing signal when be partially respectively 1,1,1,4,1.
S303:According to each synchronizing signal after restriction when partially, it is determined that synchronizing the when bias of correction, this is carried out together Step is 1 partially when correcting.
S304:The correction of 1 unit is carried out to base band data.
Afterwards within second synchronous correction cycle, according to preserve in time domain it is continuous measure when inclined threshold value 5, in frequency Each synchronizing signal measured on domain when be partially respectively 0,0,0,10,0, using the when inclined threshold limit for arranging, limit each Synchronizing signal when it is to the rear, each synchronizing signal after restriction when be partially respectively 0,0,0,4,0, then synchronize correction when Bias is 0, carries out the correction of 0 unit to base band data.
A kind of apparatus structure schematic diagram for realizing that base station is synchronous with terminal that Fig. 4 is provided for the present invention, described device include:
Measurement module 41 is received, it is for the threshold value of inclined number of times when continuously measuring in time domain according to setting, continuous to dock The synchronizing signal of the corresponding number of times that the base station for receiving is sent, on frequency domain measure synchronizing signal when it is inclined;
Limit module 42, for adopt arrange when inclined threshold limit, limit measurement each synchronizing signal when it is inclined;
It is synchronous to correct module 43, for according to each synchronizing signal after restriction when partially, it is determined that synchronizing correction When bias, and correction is synchronized according to bias when this.
The restriction module 42, specifically for judge each synchronizing signal for measuring when partially whether more than setting when it is inclined Threshold limit;When it is determined that during the synchronizing signal it is bigger than normal in arrange when inclined threshold limit when, by the synchronizing signal when adjust partially The whole when inclined threshold limit for the setting;Otherwise, it is not adjusted.
It is described it is synchronous correct module 43, the when inclined meansigma methodss specifically for determining all synchronizing signals after limiting will The meansigma methodss be defined as synchronizing correction when it is inclined.
The threshold value for receiving inclined number of times when continuously measuring in time domain described in measurement module 41 is not less than 2, and described Limit inclined threshold limit when described in module 42 less than it is described in time domain it is continuous measure when inclined number of times threshold value.
Specifically, said apparatus are located in terminal.
The present invention provides a kind of system for realizing that base station is synchronous with terminal, including above-mentioned terminal, and sends to the terminal The base station of synchronizing signal.
The present invention provides a kind of method for realizing that base station and terminal are synchronous, system, terminal and device, terminal root in the method According to the threshold value of inclined number of times when continuously measuring in time domain of setting, the synchronizing signal continuously sent to base station is measured on frequency domain The synchronizing signal of corresponding number of times when partially, and by each synchronizing signal for measuring when be limited in partially when inclined threshold limit in, so Afterwards to after these restrictions when be averaged partially, it is determined that synchronize correction when bias synchronize correction.Due at this In bright when synchronizing, for each synchronizing signal when be biased row, the blind area that there is no synchronous correction, and carrying out it is same When step is corrected, by synchronizing signal when be limited in partially when inclined threshold limit in, therefore interference can be resisted, it is right that effective control is disturbed The synchronous impact corrected.
Described above illustrates and describes a preferred embodiment of the present invention, but as previously mentioned, it should be understood that the present invention Be not limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and can be used for various other combinations, Modification and environment, and can be in invention contemplated scope described herein, by above-mentioned teaching or the technology or knowledge of association area It is modified.And change that those skilled in the art are carried out and change be without departing from the spirit and scope of the present invention, then all should be at this In the protection domain of bright claims.

Claims (8)

1. a kind of method for realizing that base station is synchronous with terminal, it is characterised in that the synchronous method includes:
When on time domain continuously the measuring threshold value of inclined number of times of the terminal according to setting, that continuously the base station for receiving is sent is corresponding The synchronizing signal of number of times, on frequency domain measure synchronizing signal when it is inclined;
Using arrange when inclined threshold limit, limit measurement each synchronizing signal when it is inclined;
According to each synchronizing signal after restriction when partially, it is determined that synchronizing the when bias of correction, and entered according to bias when this Row is synchronous to be corrected;
Wherein, it is described using arrange when inclined threshold limit, limit measurement each synchronizing signal when include partially:
Judge each measurement synchronizing signal when partially whether more than the when inclined threshold limit for arranging;
When it is determined that during the synchronizing signal it is bigger than normal in arrange when inclined threshold limit when, by the synchronizing signal when be adjusted to partially this The when inclined threshold limit of setting;
Otherwise, it is not adjusted.
2. the method for claim 1, it is characterised in that each synchronizing signal according to after restriction when partially, really Surely the when bias of correction is synchronized, including:
It is determined that the when inclined meansigma methodss of all synchronizing signals after limiting, by the meansigma methodss be defined as synchronizing correction when Partially.
3. the method for claim 1, it is characterised in that the threshold value of inclined number of times when measuring continuous in time domain is not little In 2, and when described inclined threshold limit less than it is described in time domain it is continuous measure when inclined number of times threshold value.
4. a kind of device for realizing that base station is synchronous with terminal, it is characterised in that described device includes:
Receive measurement module, for according to setting in time domain it is continuous measure when inclined number of times threshold value, continuously to receiving The synchronizing signal of the corresponding number of times that base station is sent, on frequency domain measure synchronizing signal when it is inclined;
Limit module, for adopt arrange when inclined threshold limit, limit measurement each synchronizing signal when it is inclined;
It is synchronous to correct module, for according to each synchronizing signal after restriction when partially, it is determined that synchronize the when bias of correction, And correction is synchronized according to bias when this;
Wherein, the restriction module, specifically for judge each measurement synchronizing signal when partially whether more than arrange when it is inclined Threshold limit;When it is determined that during the synchronizing signal it is bigger than normal in arrange when inclined threshold limit when, by the synchronizing signal when adjust partially The whole when inclined threshold limit for the setting;Otherwise, it is not adjusted.
5. device as claimed in claim 4, it is characterised in that it is described it is synchronous correct module, specifically for determining and limiting after The when inclined meansigma methodss of all synchronizing signals, by the meansigma methodss be defined as synchronizing correction when it is inclined.
6. device as claimed in claim 4, it is characterised in that continuously measure in time domain described in the reception measurement module When inclined number of times threshold value be not less than 2, and inclined threshold limit is continuously surveyed less than described in time domain when described in the restriction module The threshold value of inclined number of times during amount.
7. a kind of terminal, it is characterised in that the terminal includes the device as described in claim 4~6 is arbitrary.
8. a kind of system for realizing that base station is synchronous with terminal, it is characterised in that the system includes end as claimed in claim 7 End, and the base station of synchronizing signal is sent to the terminal.
CN201110227416.3A 2011-08-09 2011-08-09 Method, system and device for synchronizing base station and terminal, and terminal Active CN102932904B (en)

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CN201110227416.3A CN102932904B (en) 2011-08-09 2011-08-09 Method, system and device for synchronizing base station and terminal, and terminal
PCT/CN2012/075041 WO2013020397A1 (en) 2011-08-09 2012-05-03 Base station and terminal synchronization method, system, terminal and device

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CN107734602B (en) 2016-08-12 2023-02-10 华为技术有限公司 Synchronous processing method, device and equipment
CN109995422A (en) * 2018-01-02 2019-07-09 北京松果电子有限公司 Uplink synchronisation method, device, storage medium and electronic equipment

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WO2001058044A2 (en) * 2000-02-07 2001-08-09 Tantivy Communications, Inc. Minimal maintenance link to support synchronization
CN101136695A (en) * 2002-02-05 2008-03-05 美商内数位科技公司 Method and apparatus for synchronizing base stations
CN1780279A (en) * 2004-11-24 2006-05-31 上海乐金广电电子有限公司 Timing restoring apparatus and method thereof
CN1819467A (en) * 2004-12-30 2006-08-16 阿瑟罗斯通信股份有限公司 Joint synchronization and impairments estimation using known data patterns
CN1770664A (en) * 2005-11-16 2006-05-10 中兴通讯股份有限公司 Closed-loop uplink synchronization controlling method in wireless communication system
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