CN104053228B - A kind of method and device of synchronization among base stations - Google Patents
A kind of method and device of synchronization among base stations Download PDFInfo
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- CN104053228B CN104053228B CN201410307203.5A CN201410307203A CN104053228B CN 104053228 B CN104053228 B CN 104053228B CN 201410307203 A CN201410307203 A CN 201410307203A CN 104053228 B CN104053228 B CN 104053228B
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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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Abstract
The present invention relates to wireless communication fields, disclose a kind of method and device of synchronization among base stations.The method includes：When this base station reaches the synchronisation source base station search moment, judge in adjacent base station with the presence or absence of the synchronization source base station for meeting synchronous condition；When there is the synchronization source base station for meeting synchronous condition, the synchronization source base station for meeting synchronous condition is switched to object synchronization source base station when next base station synchronization；When this base station reaches synchronization point, base station synchronization is carried out with the object synchronization source base station.The method provided through the invention can effectively prevent to generate because of the problem of influence of synchronisation source Self-variation or environmental factor leads to synchronization failure, improve the reliability of base station synchronization.
Description
Technical field
The present invention relates to wireless communication field more particularly to a kind of method and devices of synchronization among base stations.
Background technology
In existing base station synchronization technology, there are three types of the main methods of synchronization：GPS simultaneous techniques, 1588 protocol synchronizations
It technology and eats dishes without rice or wine to intercept simultaneous techniques.
For GPS simultaneous techniques, because it is higher to the hardware requirement of base station, in base station synchronization using less.For
1588 protocol synchronization technologies, because its communication network where requiring base station must have the function of supporting 1588 agreements, therefore,
Using also seldom when base station synchronization.Simultaneous techniques is intercepted for eating dishes without rice or wine, when mainly being started by base station, the timing to adjacent base station
Information scans for, and after the timing information for obtaining adjacent base station, is believed the timing of itself using the timing information of obtained adjacent base station
Breath is adjusted, and realizes the synchronization between base station.It is more commonly used in current base station synchronization.From this, being intercepted using eating dishes without rice or wine
When simultaneous techniques realizes synchronization among base stations, the timing information for obtaining adjacent base station is particularly important.
In the related technology, it after the initial synchronisation of base station, can regularly source base station synchronous with fixed one or more carry out together
Step.For example, periodically source base station synchronous with one synchronizes for base station, when the network coverage of the synchronization source base station is undesirable, or because by
When the signal that environment influences such as synchronization source base station is blocked by building, then it can lead to synchronization failure, at this time base station
It needs to re-power the new synchronization source base station of removal search, synchronize, but re-power and can suspend all business, cannot be user
Service, and it is longer to re-power the time that the new synchronization source base station of rear removal search needs, it can be seen that in the related technology cannot
New synchronization source base station is found in time, leads to the reliability of base station synchronization and relatively inefficient.
Invention content
The object of the present invention is to provide a kind of method and devices of synchronization among base stations, to overcome base station synchronization in the related technology
The relatively low problem of reliability.
The present invention provides a kind of method of synchronization among base stations, including：
When this base station reaches the synchronisation source base station search moment, judge in adjacent base station with the presence or absence of meeting the same of synchronous condition
Walk source base station；
When there is the synchronization source base station for meeting synchronous condition, the synchronization source base station for meeting synchronous condition is switched to down
Object synchronization source base station when secondary base station synchronization；
When this base station reaches synchronization point, base station synchronization is carried out with the object synchronization source base station.
The embodiment of the present invention meets the same of synchronous condition by the way that when reaching the synchronisation source search moment, search whether there is
Source base station is walked, to realize the synchronization source base station that periodical search tracking meets synchronous condition, is conducive to find in time newly
Synchronous source base station, compares the relevant technologies, and base station synchronization failure can effectively be prevented and be evaded to scheme provided by the invention；Such as by
In being influenced by environmental factor or the reason of synchronous source base station itself, under when last time base station synchronization synchronization source base station quality used
When drop is unable to meet synchronous condition, by regarding the new synchronization source base station for meeting synchronous condition searched as next base
Stand synchronous synchronization source base station, to ensure that base station synchronization itself is not influenced by environmental factor with synchronous source base station can
It is smoothed out, realizes the reliability and accuracy for improving base station synchronization.
It is described when this base station reaches the synchronisation source base station search moment, judge in adjacent base station with the presence or absence of meeting synchronous condition
Synchronization source base station, including：
When this base station reaches the synchronisation source base station search moment, it sets uplink to default frequency point；
Receive the data in the preset duration on the default frequency point；
The data received are analyzed, when in the data there are when the identification information of base station, described in acquisition
The RSRP (Reference Signal Receiving Power, Reference Signal Received Power) and/or SNR (Signal/ of base station
Noise, signal-to-noise ratio)；
When the RSRP of the base station is more than first threshold and/or SNR is more than second threshold, determine that the base station is to meet
The synchronization source base station of synchronous condition.
The embodiment of the present invention realizes the synchronization source base station that can be used for carrying out base station synchronization according to the screening of the quality of adjacent base station,
The reliability that base station synchronization is smoothed out and improved for base station synchronization provides necessary basic condition.In addition, the embodiment of the present invention
In when preset duration it is shorter, such as when 1ms, do not interfere with also as user service, improve the stability of base station operation.
The method further includes：
When last time base station synchronization, synchronization source base station used meets synchronous condition, continue base station synchronization last time, institute when
Synchronization source base station is considered as object synchronization source base station when next base station synchronization.
The embodiment of the present invention is realized when the synchronous source base station for carrying out base station synchronization with this base station disclosure satisfy that synchronous condition
When, continue, using the synchronization source base station as the synchronization source base station of this base station, to pass through the lasting synchronization source base station for keeping base station synchronization
It is constant, it can ensure the stability and reliability of base station synchronization, to improve the accuracy of base station synchronization.
It is described when this base station reaches the synchronisation source base station search moment, judge in adjacent base station with the presence or absence of meeting synchronous condition
Synchronization source base station before, the method further includes：
When this base station powers on, to the base station that is operated on each frequency point carry out it is blind search, by it is blind search rear RSRP it is maximum and/or
The maximum base stations SNR carry out object synchronization source base station when base station synchronization as this base station for the first time after the power is turned on.
The embodiment of the present invention is searched by the way that the base station progress to being operated on each frequency point is blind, and realization is searched in wide range
Synchronous source base station, to guarantee to search the preferably synchronous source base station of quality；By regarding top-quality synchronisation source as base
The synchronization source base station stood when carrying out base station synchronization for the first time after the power is turned on, ensure that base station carries out the accurate of base station synchronization for the first time after the power is turned on
Property it is higher, and the periodical base station synchronization for after provides a preferable synchronous source base station, improves the stability of base station synchronization
And accuracy, such as first hyposynchronous synchronous source base station is top-quality synchronous source base station after the power is turned on for base station, if the quality
The passage of the quality of best synchronization source base station at any time does not change, and can keep meeting synchronous condition, then later
Base station synchronization in, still select the top-quality synchronous source base station to carry out base station synchronization, to ensure that base station synchronization
Stability and accuracy.If the passage of the quality of the top-quality synchronous source base station at any time changes, can not expire
Sufficient synchronous condition, since this base station and the reliability of the result of best synchronous source base station progress base station synchronization are higher,
High stability during source base station synchronous with other synchronizes later, so as to replace synchronisation source for after
Base station carries out base station synchronization and lays a good foundation.
The present invention also provides a kind of device of synchronization among base stations, described device includes：
Synchronisation source base station search module, for when this base station reaches the synchronisation source base station search moment, judging in adjacent base station
With the presence or absence of the synchronization source base station for meeting synchronous condition；
Handover module, for working as the synchronization source base station for existing and meeting synchronous condition, by the synchronization for meeting synchronous condition
Source base station is switched to object synchronization source base station when next base station synchronization；
Synchronization module, for when this base station reaches synchronization point, base station synchronization to be carried out with the object synchronization source base station.
The synchronisation source base station search module includes：
Setting unit, for when this base station reaches the synchronisation source base station search moment, setting uplink to default frequency
Point；
Receiving unit, for receiving the data in the preset duration on the default frequency point；
Acquiring unit, for analyzing the data received, when there are the mark of base station letters in the data
When breath, the RSRP and/or SNR of the base station are obtained；
Determination unit, for when the RSRP of the base station is more than first threshold and/or SNR is more than second threshold, determining
The base station is the synchronization source base station for meeting synchronous condition.
Described device further includes：
Module is kept, when meeting synchronous condition for synchronization source base station used when last time base station synchronization, continuing will be upper
Object synchronization source base station when synchronization source base station used is considered as next base station synchronization when secondary base station synchronization.
Described device further includes：
Initial synchronization module, for the synchronisation source base station search module when this base station reaches the synchronisation source base station search moment
When, judge in adjacent base station with the presence or absence of before meeting the synchronization source base station of synchronous condition, it is each to being operated in when this base station powers on
Base station on frequency point carry out it is blind search, search that rear RSRP is maximum and/or the maximum base stations SNR by blind, after the power is turned on for the first time as this base station
Carry out object synchronization source base station when base station synchronization.
The present invention at least has the advantages that：Adjacent base station is tracked by the search in period, synchronous condition will be met
Object synchronization source base station when adjacent base station is as base station synchronization, such as when the signal for the fixed synchronous source base station for finding base station is because building
When building blocking for object and causing the signal quality decline of fixation synchronization source base station that cannot meet synchronous condition, expire what is searched
Synchronization source base station of the synchronization source base station of sufficient synchronous condition as base station synchronization, to effectively prevent because of synchronous source base station itself
The problem of variation or the influence of environmental factor lead to synchronization failure generates, and improves the reliability and accuracy of base station synchronization.
It should be understood that above general description and following detailed description is only exemplary and explanatory, not
It can the limitation present invention.
Description of the drawings
Fig. 1 is the exemplary process diagram of the method for synchronization among base stations in the embodiment of the present invention；
Fig. 2 is the another exemplary flow chart of the method for synchronization among base stations in the embodiment of the present invention；
Fig. 3 is the another exemplary schematic diagram of the method for synchronization among base stations in the embodiment of the present invention；
Fig. 4 is the illustrative diagram of the device of synchronization among base stations in the embodiment of the present invention；
Fig. 5 is the another exemplary schematic diagram of the device of synchronization among base stations in the embodiment of the present invention.
Specific implementation mode
The embodiment of the present invention is illustrated below in conjunction with attached drawing, it should be understood that embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
The embodiment of the present invention provides a kind of method of synchronization among base stations, in technical solution provided in an embodiment of the present invention,
Adjacent base station is tracked by the search in period, selects object synchronization source base of the adjacent base station for meeting synchronous condition as base station synchronization when
It stands, such as when the signal of the fixed synchronous source base station of discovery base station causes the fixation to synchronize source base station because of blocking for building
When signal quality decline cannot meet synchronous condition, either fixed synchronous source base station is due to environment or itself optimization transmitting work(
The factors such as rate, modification physical district ID, it may appear that when fixation synchronization source base station changes, provided in an embodiment of the present invention
In scheme, base station synchronization is carried out by the synchronization source base station for meeting synchronous condition that will be searched, to effectively prevent because same
The problem of influence of step source base station Self-variation or environmental factor leads to synchronization failure generates, and improves the reliability of base station synchronization
And accuracy.The method of synchronization among base stations in the embodiment of the present invention is described in detail below.
As shown in Figure 1, for the exemplary process diagram of the method for synchronization among base stations in the embodiment of the present invention, the embodiment of the present invention
The method of middle synchronization among base stations, including step 101- steps 103：
Step 101：When this base station reaches the synchronisation source base station search moment, judge to synchronize with the presence or absence of satisfaction in adjacent base station
The synchronization source base station of condition.
Wherein, in one embodiment, at the time of the synchronisation source base station search moment can be a cycle cycle, such as just
Moment beginning is 5:00:00, setting is at interval of 15 minutes being a synchronisation source base station search moment, then 5:15:00、5:30:00、5:
45:00 waits and so on, is all the synchronisation source base station search moment.
Wherein, in one embodiment, synchronous condition can be according to for example adjacent base of the information that can characterize synchronisation source quality
The RSRP and/or SNR to stand is determined, such as the RSRP that synchronous condition is base station is more than first threshold and/or SNR is more than the second threshold
Value；Wherein, first threshold can be a fixed value, can also be dynamically determined according to the RSRP of adjacent base station, such as by adjacent base
The average value of the RSRP to stand is determined as first threshold.Similar, second threshold may be a fixed value, or according to adjacent base
The SNR to stand is determined, such as the average value of the SNR of adjacent base station is determined as second threshold.Step 101, which can perform, as a result, is：When this
When base station reaches the synchronisation source base station search moment, it sets uplink to default frequency point；It receives pre- on the default frequency point
If the data in duration；The data received are analyzed, when, there are when the identification information of base station, being obtained in the data
Take the Reference Signal Received Power RSRP and/or Signal to Noise Ratio (SNR) of the base station；When the RSRP of the base station is more than first threshold
And/or SNR be more than second threshold when, determine that the base station is the synchronization source base station for meeting synchronous condition.Wherein, implement at one
In example, it is possible to provide the frequency point to work to base station can be default frequency point.Wherein, in one embodiment, the mark of base station
Know combination, the CGI (Cell that information is, for example, PCI (Physical Cell ID, the physical district ID) and frequency point information of synchronisation source
Global Identifier, Cell Global Identification), the location information such as synchronisation source of the location information of synchronisation source, synchronisation source
Latitude and longitude coordinates information etc., any information that can uniquely characterize synchronisation source can be used as identification information and is suitable for the present invention in fact
Example is applied, details are not described herein.Wherein, in one embodiment, preset duration can be very short, such as in LTE (Long Term
Evolution, long term evolution) in channel or PBCH (Physical Broadcast Channel), which can be 1ms (millisecond), such as
This short time carries out the normal use that data receiver does not interfere with user.Furthermore, it is necessary to explanation, in the embodiment of the present invention
In, the information of any quality that can characterize synchronisation source is suitable for the embodiment of the present invention, and details are not described herein.The present invention is implemented
Example realizes the synchronization source base station that can be used for carrying out base station synchronization according to the screening of the quality of adjacent base station, is smoothed out for base station synchronization
Necessary basic condition is provided with the reliability for improving base station synchronization.When preset duration is shorter in the embodiment of the present invention, such as 1ms
When, it does not interfere with also as user service, improves the stability of base station operation.
Step 102：When there is the synchronization source base station for meeting synchronous condition, by the synchronization source base station for meeting synchronous condition
It is switched to object synchronization source base station when next base station synchronization.
Wherein, in one embodiment, when the synchronization source base station used when last time base station synchronization meets synchronous condition, after
It is continuous by last time base station synchronization when object synchronization source base station when being considered as next base station synchronization of synchronization source base station used.The present invention is real
Applying example realizes when the synchronous source base station for carrying out base station synchronization with this base station disclosure satisfy that synchronous condition, continues the synchronisation source
Synchronization source base station of the base station as this base station, it is constant by the lasting synchronization source base station for keeping base station synchronization, it can ensure base station
Synchronous stability and reliability, to improve the accuracy of base station synchronization.
Wherein, in one embodiment, when presence meets the synchronization source base station of synchronous condition, and base station synchronization last time, institute when
When synchronization source base station is unsatisfactory for synchronous condition, it is same that the synchronization source base station for meeting synchronous condition is switched to next base station
Object synchronization source base station when step.
Wherein, in one embodiment, available synchronisation source station list can be pre-established, the same of synchronous condition will be met
Step source base station is recorded in the available synchronisation source station list, synchronous with when replacement progress base station synchronization in order to update later
Source base station.
Step 103：When this base station reaches synchronization point, base station synchronization is carried out with the object synchronization source base station.
Wherein, in one embodiment, base station synchronization can be carried out by the method for channel estimation.Such as to object synchronization
The common down channel of source base station carries out channel estimation operation, obtains the channel response sequence after operation；According to the width of sequential value
Degree and threshold values, calculate the timing offset of object synchronization source base station and this base station, are carried out to this base station according to the timing offset
It is synchronous.
Wherein, in one embodiment, where object synchronization source base station and this base station when frequency range difference, this can be passed through
The time difference of base station and the working frequency range of synchronous source base station and two working frequency range determines time when this base station carries out base station synchronization
Information.For example, this base station operation, in F-band, object synchronization source base station is operated in E frequency ranges, F-band and the time difference of E frequency ranges are
C, then when carrying out base station synchronization, on the time of the object synchronization source base station of E frequency ranges adjust the C time differences can determine this base station
Time.
In addition to the method for above-mentioned carry out synchronization among base stations, in embodiments of the present invention, before step 101, it can also hold
The following operation of row：When base station powers on, to the base station that is operated on each frequency point carry out it is blind search, by it is blind search rear RSRP it is maximum and/or
The maximum base stations SNR carry out object synchronization source base station when base station synchronization as this base station for the first time after the power is turned on.The embodiment of the present invention
It is searched by the way that the base station progress to being operated on each frequency point is blind, realizes and search for synchronous source base station in wide range, to guarantee
Enough search the preferably synchronous source base station of quality；Base station is carried out for the first time after the power is turned on by regarding top-quality synchronisation source as base station
Synchronization source base station when synchronous, ensure that base station carry out for the first time after the power is turned on base station synchronization accuracy it is higher, and week after being
Phase property base station synchronization provides a preferable synchronous source base station, improves in the stability and accuracy, such as base station of base station synchronization
First hyposynchronous synchronous source base station is top-quality synchronous source base station after electricity, if the matter of the top-quality synchronous source base station
The passage of amount at any time does not change, and can keep meeting synchronous condition, then in base station synchronization later, still selects
The top-quality synchronous source base station carries out base station synchronization, to ensure that the stability and accuracy of base station synchronization.If should
The passage of the quality of top-quality synchronous source base station at any time changes, and can not meet synchronous condition, due to this base station
It is higher with the reliability of the result of best synchronous source base station progress base station synchronization, therefore in source base station synchronous with other later
High stability during synchronizing, it is good so as to be laid in the synchronous source base station progress base station synchronization of replacement for after
Good basis.
To sum up, the embodiment of the present invention, by the way that when reaching the synchronisation source base station search moment, search is synchronized with the presence or absence of satisfaction
The synchronization source base station of condition is conducive in time to realize the synchronization source base station that periodically search tracking meets synchronous condition
It was found that new synchronization source base station, compares the relevant technologies, base station synchronization mistake can effectively be prevented and be evaded to scheme provided by the invention
It loses；Such as influenced by environmental factor or synchronous source base station itself due to, when last time base station synchronization synchronisation source used
When base station quality decline is unable to meet synchronous condition, pass through the new synchronization source base station for meeting synchronous condition that will be searched
As the synchronization source base station of next base station synchronization, to ensure base station synchronization not by environmental factor and the synchronous source base station shadow of itself
It rings, improves the reliability and accuracy of base station synchronization.
The method of synchronization among base stations in the embodiment of the present invention is described in detail below by several simple embodiments.
Embodiment one
As shown in Fig. 2, periodically to search for the synchronous source base station of tracking, the synchronization source base station used in last time base station synchronization
Synchronous condition cannot be met, for carrying out base station synchronization with the new synchronization source base station for meeting synchronous condition, the present invention is implemented
The method of synchronization among base stations is described in detail in example, 201- steps 208 that the method comprising the steps of：
Step 201：It is blind to the synchronization source base station progress being operated on each frequency point to search when base station powers on, after blind search
RSRP maximums and/or the maximum base stations SNR carry out object synchronization source base when base station synchronization as this base station for the first time after the power is turned on
It stands.
Step 202：When reaching the synchronisation source base station search moment, it sets uplink to default frequency point.
Step 203：Receive the data in the 1ms on the default frequency point.
Step 204：The data received are analyzed, when there are the identification information of base station, obtain the mark
The RSRP and/or SNR of the corresponding base station of information.
Step 205：Whether base station present in judgment step 204 meets synchronous condition, if so, step 206 is executed, if
It is no, then terminate.
Step 206：Judge whether synchronization source base station used when last time base station synchronization meets synchronous condition, if so, holding
Row step 207；If it is not, thening follow the steps 208.
Step 207：Target when synchronization source base station used is considered as next base station synchronization when continuing last time base station synchronization
Synchronous source base station carries out base station synchronization when reaching synchronization point with synchronous source base station used when last time base station synchronization.
Step 208：The base station for meeting synchronous condition is switched to object synchronization source when next base station synchronization, it is same when reaching
When walking the moment, base station synchronization is carried out with object synchronization source base station.
In addition, in embodiments of the present invention, can also be obtained when reaching synchronization point used when last time base station synchronization
The RSRP and/or SNR of synchronous source base station, then judge whether synchronization source base station used when last time base station synchronization meets synchronization bar
Part, when synchronization source base station used is unsatisfactory for synchronous condition when last time base station synchronization, with the synchronisation source base for meeting synchronous condition
Object synchronization source base station when synchronization source base station used is as period progress base station synchronization when standing instead of last time base station synchronization.
The embodiment of the present invention constantly selects the synchronization for meeting synchronous condition by the synchronous source base station of search tracking in period
Synchronization source base station when source base station is as base station synchronization, such as when causing this to fix because of environmental change such as blocking for building
When the signal quality decline of synchronous source base station cannot meet synchronous condition, the available synchronisation source for meeting synchronous condition that will search
Synchronization source base station of the base station as base station synchronization, to effectively prevent because of synchronous source base station Self-variation or environmental factor
The generation for the problem of influencing to lead to synchronization failure, optimizes the synchronization source base station of base station, improves the reliability of base station synchronization.
Embodiment two
Synchronization source base station when with last time base station synchronization is unsatisfactory for synchronous condition, and meets synchronization bar using the new of discovery
For the synchronization source base station of part synchronizes, the method for synchronization among base stations in the embodiment of the present invention is described in detail.Such as Fig. 3
Shown, the synchronization source base station when last time base station synchronization is because of the reason of being blocked by building etc. so that synchronization when upper subsynchronous
Source base station A is unsatisfactory for synchronous condition, and through periodic searches, find new base station B, and base station B meets synchronous condition, at this time then
It can be synchronized with by base station B, avoid the failure of base station synchronization, to ensure that base station can smoothly complete synchronization, improved
The stability of base station synchronization.
A kind of device of synchronization among base stations is also provided in the embodiment of the present invention, as shown in figure 4, for base in the embodiment of the present invention
The illustrative diagram of synchronous device, the device include between standing：
Synchronisation source base station search module 401, for when this base station reaches the synchronisation source base station search moment, judging adjacent base station
In with the presence or absence of meeting the synchronization source base station of synchronous condition；
Handover module 402, for when there is the synchronization source base station for meeting synchronous condition, meeting the same of synchronous condition by described
Step source base station is switched to object synchronization source base station when next base station synchronization；
Synchronization module 403, for when this base station reaches synchronization point, it is same to carry out base station with the object synchronization source base station
Step.
Wherein, in one embodiment, as shown in figure 5, the synchronisation source base station search module 401 includes：
Setting unit 404, for when this base station reaches the synchronisation source base station search moment, uplink to be set as default
Frequency point；
Receiving unit 405, for receiving the data in the preset duration on the default frequency point；
Acquiring unit 406, for analyzing the data received, when the mark there are base station in the data
When information, the RSRP and/or SNR of the base station are obtained；
Determination unit 407 is used for when the RSRP of the base station is more than first threshold and/or SNR is more than second threshold, really
The fixed base station is the synchronization source base station for meeting synchronous condition.
Wherein, in one embodiment, as shown in figure 5, described device further includes：
Keep module 408, when meeting synchronous condition for synchronization source base station used when last time base station synchronization, continue by
Object synchronization source base station when synchronization source base station used is considered as next base station synchronization when last time base station synchronization.
Wherein, in one embodiment, as shown in figure 5, described device further includes：
Initial synchronization module 409, for the synchronisation source base station search module when this base station reaches synchronisation source base station search
When the moment, judge in adjacent base station with the presence or absence of before meeting the synchronization source base station of synchronous condition, when this base station powers on, to being operated in
Base station on each frequency point carry out it is blind search, search that rear RSRP is maximum and/or the maximum base stations SNR by blind, after the power is turned on as this base station
Object synchronization source base station when base station synchronization is carried out for the first time.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, explanation will be not set forth in detail herein.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of method of synchronization among base stations, which is characterized in that the method includes：
When this base station reaches the synchronisation source base station search moment, judge in adjacent base station with the presence or absence of the synchronisation source for meeting synchronous condition
Base station, including：When this base station reaches the synchronisation source base station search moment, it sets uplink to default frequency point；Described in reception
The data in preset duration on default frequency point；The data received are analyzed, when there are base stations in the data
Identification information when, obtain the Reference Signal Received Power RSRP and/or Signal to Noise Ratio (SNR) of the base station；When the base station
When RSRP is more than first threshold and/or SNR more than second threshold, determine that the base station is the synchronisation source base for meeting synchronous condition
It stands；
When there is the synchronization source base station for meeting synchronous condition, the synchronization source base station for meeting synchronous condition is switched to next base
Object synchronization source base station when standing synchronous；
When this base station reaches synchronization point, base station synchronization is carried out with the object synchronization source base station, is specifically included：Pass through channel
The method of estimation carries out base station synchronization with the object synchronization source base station；Or, when the object synchronization source base station and this base station institute
In frequency range difference, by the time difference of this base station and the working frequency range and two working frequency range of the synchronous source base station, this is determined
Base station carries out temporal information when base station synchronization.
2. the method for synchronization among base stations according to claim 1, which is characterized in that the method further includes：
It is used when continuing last time base station synchronization when last time base station synchronization, synchronization source base station used meets synchronous condition
Synchronous source base station is considered as object synchronization source base station when next base station synchronization.
3. according to the method for any synchronization among base stations in claim 1,2, which is characterized in that described when this base station reaches
When the synchronisation source base station search moment, judge in adjacent base station with the presence or absence of before meeting the synchronization source base station of synchronous condition, the side
Method further includes：
It is blind to the base station progress being operated on each frequency point to search when this base station powers on, search rear RSRP maximums and/or SNR most by blind
Big base station carries out object synchronization source base station when base station synchronization as this base station for the first time after the power is turned on.
4. a kind of device of synchronization among base stations, which is characterized in that described device includes：
Synchronisation source base station search module, for when this base station reaches the synchronisation source base station search moment, judge in adjacent base station whether
In the presence of the synchronization source base station for meeting synchronous condition, the synchronisation source base station search module includes：Setting unit, for working as this base station
When reaching the synchronisation source base station search moment, it sets uplink to default frequency point；Receiving unit, for receiving the default frequency
The data in preset duration on point；Acquiring unit is deposited for analyzing the data received when in the data
In the identification information of base station, the Reference Signal Received Power RSRP and/or Signal to Noise Ratio (SNR) of the base station are obtained；Determination unit,
For when the RSRP of the base station is more than first threshold and/or SNR is more than second threshold, determining that the base station is to meet to synchronize
The synchronization source base station of condition；
Handover module, for working as the synchronization source base station for existing and meeting synchronous condition, by the synchronisation source base for meeting synchronous condition
Station is switched to object synchronization source base station when next base station synchronization；
Synchronization module, for when this base station reaches synchronization point, carrying out base station synchronization with the object synchronization source base station, specifically
For：By the method for channel estimation, base station synchronization is carried out with the object synchronization source base station；Or, working as the object synchronization source
Where base station and this base station when frequency range difference, pass through this base station and the working frequency range of the synchronous source base station and two working frequency range
Time difference determines temporal information when this base station carries out base station synchronization.
5. the device of synchronization among base stations according to claim 4, which is characterized in that described device further includes：
Module is kept, when meeting synchronous condition for synchronization source base station used when last time base station synchronization, is continued last time base
Synchronization source base station used when synchronizing of standing is considered as object synchronization source base station when next base station synchronization.
6. according to the device of any synchronization among base stations in claim 4,5, which is characterized in that described device further includes：
Initial synchronization module, for the synchronisation source base station search module when this base station reaches the synchronisation source base station search moment,
Judge in adjacent base station with the presence or absence of before meeting the synchronization source base station of synchronous condition, when this base station powers on, to being operated in each frequency
Base station on point carry out it is blind search, search that rear RSRP is maximum and/or the maximum base stations SNR by blind, as this base station after the power is turned on for the first time into
Object synchronization source base station when row base station synchronization.
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| CN101123465A (en) * | 2006-08-09 | 2008-02-13 | 上海贝尔阿尔卡特股份有限公司 | Method and device for synchronization of network devices in wireless communication system |
| CN101841904B (en) * | 2009-03-20 | 2014-03-12 | 中兴通讯股份有限公司 | Null interface synchronization method and system of home node base station |
| CN103813436A (en) * | 2012-11-05 | 2014-05-21 | 京信通信系统（中国）有限公司 | Method for synchronizing household base station air interface, apparatus, and household base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101123465A (en) * | 2006-08-09 | 2008-02-13 | 上海贝尔阿尔卡特股份有限公司 | Method and device for synchronization of network devices in wireless communication system |
| CN101841904B (en) * | 2009-03-20 | 2014-03-12 | 中兴通讯股份有限公司 | Null interface synchronization method and system of home node base station |
| CN103813436A (en) * | 2012-11-05 | 2014-05-21 | 京信通信系统（中国）有限公司 | Method for synchronizing household base station air interface, apparatus, and household base station |
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Address after: 510663 No. 10 Shenzhou Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: Jingxin Network System Co.,Ltd. Address before: 510663 No. 10 Shenzhou Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee before: Comba Telecom System (China) Ltd. |