CN102932906B - Global positioning system lockout failure judges and the synchronous method and device kept - Google Patents
Global positioning system lockout failure judges and the synchronous method and device kept Download PDFInfo
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- CN102932906B CN102932906B CN201110229741.3A CN201110229741A CN102932906B CN 102932906 B CN102932906 B CN 102932906B CN 201110229741 A CN201110229741 A CN 201110229741A CN 102932906 B CN102932906 B CN 102932906B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
- H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0644—External master-clock
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
Judge the invention discloses a kind of global position system GPS lockout failure and the synchronous method kept, each base station is attached by X2 mouthfuls in advance, gps clock network is formed, then methods described includes：Each GPS websites send test frame by the cycle or on demand to all GPS adjacent areas website；For each GPS websites, sending the time, receive the time and testing the arrival time of response frame by test frame, judge the GPS websites whether with each GPS adjacent areas Site synch；Determine whether that the GPS adjacent areas website of more than half is all synchronous with the GPS websites：If it is, judging that GPS websites, as locking website, otherwise judge the GPS websites as losing lock website；The present invention can judge whether base station really locks GPS in TDD LTE radio communications, or keep base station not move back clothes after some GPS websites go wrong.
Description
Technical field
Judge and synchronous holding the present invention relates to communication technical field, more particularly to a kind of global positioning system lockout failure
Method and device.
Background technology
(Long Term Evolution, are drilled TDD (Time Division Duplexing, time division duplex) LTE for a long time
Enter) it is a kind of wireless communication system, it is synchronously an extremely important step within the system, without synchronously, TDD LTE are just
At all can not networking, without synchronous, the serious of each cell can be brought to interfere, cause handoff failure, flow declines etc.
The problems such as, that is to say, that synchronous is an important technical foundation of TDD LTE systems.
In practice, it is found that GPS (global positioning system) lock condition can not be from webmaster backstage entirely accurate
Feed back, sometimes GPS is in the state of an open circuit, or connect it is not fully good in the case of, equipment can also be locked
GPS, background net management does not have GPS alarm displays, but actually the GPS connections base station is that have than more serious timing offset.In addition
Exactly there is disturbed condition in a kind of situation, cause the gps signal of part website to fluctuate, also result in these when GPS frequencies
Website not fully with other Site synch.
Outdoor is typically mounted at because GPS is set, it is affected by various conditions, install, interference, many factors shadow such as aging
Ring, have certain probability of malfunction, and fault rate is greatly increased because website is numerous.
For produced problem of this GPS itself, website oneself is possible to judge, once there is this phenomenon, that
Background net management indicates how problematic this from thousands of stations substantially one blind state is due to no alarm
Find out at stationEven if other background net management has alarm to indicate, before no solution GPS stationary problems, asked for GPS
How the base station of topic, allow it to keep the synchronization with other base stations, the performance of whole network do not influenceedAt present, for this two
Individual problem not yet has good solution.
The content of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of judgement of global positioning system lockout failure and synchronously holding
Method and device, to solve to judge whether base station really locks GPS websites and in GPS go out present in prior art
May be moved back after existing problem clothes the problem of.
The purpose of the present invention is mainly achieved through the following technical solutions：
Judge the invention provides a kind of global position system GPS lockout failure and the synchronous method kept, in advance will be each
Individual base station is attached by X2 mouthfuls, forms gps clock network, then methods described includes：
Each GPS websites send test frame by the cycle or on demand to all GPS adjacent areas website；
For each GPS websites, by test frame when sending the time, receive the time and testing the arrival of response frame
Between, judge the GPS websites whether with each GPS adjacent areas Site synch；
Determine whether that the GPS adjacent areas website of more than half is all synchronous with the GPS websites：If it is, judging that the GPS stands
Point is locking website, otherwise judges the GPS websites as losing lock website.
Further, for the nonsynchronous GPS adjacent areas websites of the GPS, determine whether the GPS adjacent areas website whether with
Its GPS adjacent areas Site synch, to determine whether the GPS adjacent areas website is losing lock website.
Further, in addition to：
For a losing lock website, judged by GPS adjacent areas website or the timestamp of predetermined GPS tokens website offer
The drift situation of oneself clock.Specifically include：According to the transmission time of the GPS websites, GPS adjacent areas website or predetermined GPS tokens
Website feedback test response frame reaches the time, calculates when obtaining GPS adjacent areas website or predetermined GPS tokens website theoretical and receiving
Between；
The theoretical reception time of GPS adjacent areas website and the actual difference for receiving the time are calculated, or, predetermined GPS tokens website
The theoretical reception time and the actual difference for receiving the time, obtain the GPS websites and GPS adjacent areas website or with predetermined GPS tokens station
The clock difference of point；
The time of the losing lock website is corrected according to the clock difference, with GPS adjacent areas website or predetermined GPS tokens website
Reach synchronization.
Further, judge GPS websites and each GPS adjacent areas website whether synchronously specifically include：
For every time send test frame, according to the transmission time of the GPS websites, the GPS adjacent areas stand firm feedback test response
Frame reaches the time, calculates the theoretical reception time for obtaining the GPS adjacent areas website；
The theoretical reception time of the GPS adjacent areas website and the actual difference for receiving the time are calculated, the GPS websites are obtained with being somebody's turn to do
The clock difference of GPS adjacent areas website；
When the clock difference continuous several times are more than reservation threshold, judge that the GPS websites are asynchronous with the GPS adjacent areas website.
Further, in addition to：
If having the GPS adjacent areas website of half all synchronous with the GPS websites just, predetermined GPS is determined whether
Token website whether with the GPS Site synch, if it is, judge GPS websites as locking website, otherwise judge the GPS websites
For losing lock website.
Judge present invention also offers a kind of global position system GPS lockout failure and the synchronous system kept, in advance will
Each base station is attached by X2 mouthfuls, forms gps clock network, then the system includes：Test initiation module and test
Judge module, wherein,
Initiation module, website transmission test in all GPS adjacent areas is given by the cycle or on demand for triggering each GPS websites
Frame；
Judge module is tested, for for each GPS websites, by the transmission time of test frame, receiving time and survey
Try response frame arrival time, judge the GPS websites whether with each GPS adjacent areas Site synch；And determine whether half
GPS adjacent areas website above is all synchronous with the GPS websites：If it is, judging that the GPS websites, as locking website, otherwise judge
The GPS websites are losing lock website.
Further, the test judge module is additionally operable to,
For with the nonsynchronous GPS adjacent areas websites of the GPS, determine whether whether the GPS adjacent areas website adjacent with its GPS
Area's Site synch, to determine whether the GPS adjacent areas website is losing lock website.
Further, the test judge module is additionally operable to, for a losing lock website, by GPS adjacent areas website or
Timestamp that predetermined GPS tokens website is provided judges the drift situation of oneself clock.
The present invention has the beneficial effect that：
The present invention can solve how to judge whether GPS indeed is in lock-out state in TDD LTE radio communications, and
How base station is kept not move back the problem of taking after some GPS go wrong.
Other features and advantages of the present invention will be illustrated in the following description, also, the partial change from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of methods described of the embodiment of the present invention；
Fig. 2 is the structural representation of system described in the embodiment of the present invention.
Embodiment
The preferred embodiments of the present invention are specifically described below in conjunction with the accompanying drawings, wherein, accompanying drawing constitutes the application part, and
It is used for the principle for explaining the present invention together with embodiments of the present invention.For purpose of clarity and simplification, when it may make the present invention
Theme it is smudgy when, illustrating in detail for known function and structure in device described herein will be omitted.
Because existing LTE structure design turns into a flat network, each eNodeB (evolved Node B, LTE
The title of middle base station) directly it is connected by X2 mouthfuls of interfaces, there is X2 mouthfuls of switching between adjacent area again, it is necessary to keep X2 synchronization.
The embodiment of the present invention is needed each eNodeB being attached by X2 mouthfuls, and the clock network of GPS more than one is formed according to X2 networks
Network.
First, methods described of the embodiment of the present invention is described in detail with reference to accompanying drawing 1.
As shown in figure 1, Fig. 1 is the schematic flow sheet of methods described of the embodiment of the present invention, specifically it may include steps of：
Step 101：For the ease of implementing, a synchronous set of sites and a step-out set of sites are set first, wherein, it is synchronous
Set of sites is used to record normal locking website, and step-out set of sites is used to record losing lock website；Also, synchronous set of sites initial shape
State can all add all GPS websites, and it is all to lock in website, follow-up deterministic process again to assume that these GPS stand firm
It is phased out not being the website really locked i.e. losing lock website, losing lock website is added in step-out set of sites；Synchronous set of sites
Original state can also be that a GPS website is not also added, and the website normally locked is gradually added in follow-up deterministic process；Also
Can first select several GPS websites normally locked to be added in synchronous set of sites, it is then continuous in follow-up deterministic process again
Add other GPS websites for normally locking；Synchronous set of sites is set using a kind of last mode in the embodiment of the present invention
Original state, selects 3 websites normally locked and adds it in synchronous set of sites；
Step 102：As a preferred embodiment of the present invention, a GPS website is randomly choosed from synchronous set of sites
It is used as GPS token websites；The step can certainly be omitted, i.e., test is synchronized according to all GPS adjacent areas website；
Step 103：Each GPS websites (including being initially added synchronous set of sites and not adding) are respectively by the cycle
Or come to send test frame to all GPS adjacent areas website and GPS tokens website of oneself on demand；
Step 104：Mirror is sent according to Ethernet, GPS websites can synchronously judge that the GPS stands with passage time stamp
Point whether with GPS adjacent areas Site synchIf asynchronous, step 105 is performed, step 106 is otherwise performed；
Judge that the GPS websites process whether synchronous with each GPS adjacent areas website is specifically included：Sent out with some GPS website
Send exemplified by test frame (it is assumed that GPS website A), if setting GPS websites A transmission time as T1, GPS adjacent areas website B reception
Time is T2, the arrival time T3 of GPS adjacent areas website B feedback test response frames (test response frame reach GPS websites A when
Between), the GPS adjacent areas website B reception time is T2 ' in theory, and the theoretical reception time is Δ t with the actual clock difference received, then
T2 '=T1+ (T1-T3)/2, Δ t=| T2-T2 ' |；If Δ t continuous n times (such as 3 times) is more than reservation threshold T, then it is assumed that should
There is losing lock in GPS adjacent areas website, i.e., the GPS adjacent areas website is asynchronous with GPS websites A, conversely, the GPS adjacent areas website is stood with GPS
Point A is synchronous；For GPS websites A and other GPS adjacent areas websites and the whether synchronous judgement of GPS tokens, with previous examples process
It is identical；
Wherein, synchronous judgment principle is：Majority rule, i.e. if more than half GPS adjacent areas website is with being somebody's turn to do
GPS websites are all synchronous, then can be determined that the GPS Site synch, that is, think that the GPS websites are locked out website and added it to same
Walk in set of sites, otherwise, it is determined that the GPS websites are losing lock website and added it in step-out set of sites.For having one just
Half GPS adjacent areas website and the situation of the GPS Site synch, at this time also need to judge the GPS tokens website whether with the GPS
Website is also synchronous, if it is, can be determined that the GPS Site synch, that is, thinks that the GPS websites are locked out website and are added into
Into synchronous set of sites, otherwise, it is determined that the GPS websites are losing lock website and added it in step-out set of sites.
Step 105：If the GPS websites belonged to synchronous set of sites originally, by the GPS websites from synchronous set of sites
Fall, be put into step-out set of sites, and its state relies instead upon other GPS adjacent areas websites or GPS token Site synch, if
The GPS websites are then directly put into step-out set of sites by the GPS websites not in synchronous set of sites；The GPS websites are put into mistake
Walk and step 108 is performed after set of sites, i.e., after the GPS websites recover (deviation is less than after reservation threshold), returned from step-out set of sites
It is grouped into synchronous set of sites；
It should be noted that the GPS websites for being put into step-out set of sites, i.e. losing lock website, can pass through GPS adjacent areas station
The timestamp that point or predetermined GPS tokens website are provided judges the drift situation of oneself clock, is allowed in an out-of-lock condition
Can be synchronous；Specifically include：Fed back and surveyed according to the transmission time of the GPS websites, GPS adjacent areas website or predetermined GPS tokens website
The time that reaches of response frame is tried, the theoretical reception time for obtaining GPS adjacent areas website or predetermined GPS tokens website is calculated；Then count
Calculate GPS adjacent area websites or the theoretical reception time of predetermined GPS tokens website and GPS adjacent areas website or predetermined GPS tokens website
The actual difference for receiving the time, obtains the clock difference (clock difference of the GPS websites and GPS adjacent areas website or predetermined GPS tokens website
Calculate referring to step 104)；And then the time of the losing lock website is corrected according to the clock difference, it is allowed in an out-of-lock condition
Reached with GPS adjacent areas website or predetermined GPS tokens website synchronous.
Step 106：For with the nonsynchronous GPS adjacent areas website of the GPS websites (such as GPS website B), confirm GPS websites B
Whether with its GPS adjacent areas Site synch, if it is, performing step 107；Otherwise step 108 is performed；
Step 107：GPS websites B is added in synchronous set of sites；
Step 108：Again synchronism detection is initiated, that is, goes to step 104.
Next described device of the embodiment of the present invention is described in detail with reference to accompanying drawing 2.
As shown in Fig. 2 Fig. 2 is the structural representation of described device of the embodiment of the present invention, it can specifically include：Test is initiated
Module and test judge module, wherein,
(1) initiation module, sends for triggering each GPS websites by the cycle or on demand to all GPS adjacent areas website
Test frame；
(2) test judge module, for for each GPS websites, by the transmission time of test frame, receive the time with
And test response frame arrival time, judge the GPS websites whether with each GPS adjacent areas Site synch；And determine whether
The GPS adjacent areas website of more than half is all synchronous with the GPS websites：If it is, judging that GPS websites, as locking website, are otherwise sentenced
The fixed GPS websites are losing lock website.
Wherein, judge that the GPS websites process whether synchronous with each GPS adjacent areas website is specifically included：Stood with some GPS
Point is sent exemplified by test frame (it is assumed that GPS website A), if setting GPS websites A transmission time as T1, GPS adjacent areas website B's
The reception time is T2, and the arrival time T3 of GPS adjacent areas website B feedback test response frames (tests response frame and reaches GPS websites A
Time), the GPS adjacent areas website B reception time is T2 ' in theory, and the theoretical reception time is Δ with the actual clock difference received
T, then T2 '=T1+ (T1-T3)/2, Δ t=| T2-T2 ' |；If Δ t continuous n times (such as 3 times) is more than reservation threshold T, recognize
There is losing lock for the GPS adjacent areas website, i.e., the GPS adjacent areas website is asynchronous with GPS websites A, conversely, the GPS adjacent areas website with
GPS websites A is synchronous；For GPS websites A and other GPS adjacent areas websites and the whether synchronous judgement of GPS tokens, with above example
Subprocess is identical；
Wherein, synchronous judgment principle is：Majority rule, i.e. if more than half GPS adjacent areas website is with being somebody's turn to do
GPS websites are all synchronous, then can be determined that the GPS Site synch, that is, think that the GPS websites are locked out website and added it to same
Walk in set of sites, otherwise, it is determined that the GPS websites are losing lock website and added it in step-out set of sites.For having one just
The situation of more than half GPS adjacent areas website and the GPS Site synch, at this time also need to judge the GPS tokens website whether with
The GPS websites also synchronization, if it is, can be determined that the GPS Site synch, that is, thinks that the GPS websites are locked out website and incited somebody to action
It is added in synchronous set of sites, otherwise, it is determined that the GPS websites are losing lock website and added it in step-out set of sites.
For with the nonsynchronous GPS adjacent areas websites of the GPS, test judge module to determine whether the GPS adjacent areas website
Whether the GPS adjacent areas Site synch with it, to determine whether the GPS adjacent areas website is losing lock website.
For a losing lock website, test judge module will also be carried by GPS adjacent areas website or predetermined GPS tokens website
The timestamp of confession judges the drift situation of oneself clock, i.e., according to the transmission time of the GPS websites, GPS adjacent areas website or pre-
Determine the time that reaches of GPS token website feedback test response frames, calculate and obtain GPS adjacent areas website or predetermined GPS tokens website
The theoretical reception time；Then theoretical reception time and the GPS adjacent areas website of GPS adjacent area websites or predetermined GPS tokens website are calculated
Or the difference of the actual reception time of predetermined GPS tokens website, obtain the GPS websites and GPS adjacent areas website or predetermined GPS tokens station
The clock difference of point；And then the time of the losing lock website is corrected according to the clock difference, be allowed in an out-of-lock condition with GPS
Adjacent area website or predetermined GPS tokens website reach synchronization.
Implement process for system described in the embodiment of the present invention, due to being described in detail in the above method so
Place is repeated no more.
In summary, judge and the synchronous side kept the embodiments of the invention provide a kind of global positioning system lockout failure
Method and device, make use of the characteristic of the flattening network of X2 in LTE to form gps clock resource pool；Each GPS websites are by surveying
Try frame send the time, receive the time and test response frame arrival time, judge the GPS websites whether with GPS adjacent areas station
Point is synchronous, i.e. whether GPS is really in the lock state；If out-of-lock condition is in GPS websites, that is, base station is not locked correctly
Determine GPS, synchronize holding by using GPS adjacent areas website or the timestamp of GPS tokens website offer, reach and do not move back clothes
Purpose.Intensive place is installed in some GPS websites, the work(synchronized to some websites for not installing GSP can also be played
Energy.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (9)
1. a kind of global position system GPS lockout failure judges and the synchronous method kept, it is characterised in that in advance by each base
Stand and be attached by X2 mouthfuls, form gps clock network, then methods described includes：
Each GPS websites send test frame by the cycle or on demand to all GPS adjacent areas website；
For each GPS websites, sending the time, receive the time and testing the arrival time of response frame by test frame is sentenced
Break the GPS websites whether with each GPS adjacent areas Site synch；
Determine whether that the GPS adjacent areas website of more than half is all synchronous with the GPS websites：If it is, judge the GPS websites as
Website is locked, otherwise judges the GPS websites as losing lock website.
2. according to the method described in claim 1, it is characterised in that for the nonsynchronous GPS adjacent areas websites of the GPS, enter one
Step judge the GPS adjacent areas website whether the GPS adjacent areas Site synch with it, to determine whether the GPS adjacent areas website is losing lock station
Point.
3. method according to claim 1 or 2, it is characterised in that also include：
For a losing lock website, oneself is judged by GPS adjacent areas website or the timestamp of predetermined GPS tokens website offer
The drift situation of clock.
4. method according to claim 3, it is characterised in that specifically include：
According to reaching for the transmission time of the GPS websites, GPS adjacent areas website or predetermined GPS tokens website feedback test response frame
Time, calculate the theoretical reception time for obtaining GPS adjacent areas website or predetermined GPS tokens website；
The theoretical reception time of GPS adjacent areas website and the actual difference for receiving the time are calculated, or, the reason of predetermined GPS tokens website
By the time of reception and the actual difference for receiving the time, obtain the GPS websites and GPS adjacent areas website or with predetermined GPS tokens website
Clock difference；
The time of the losing lock website is corrected according to the clock difference, reached with GPS adjacent areas website or predetermined GPS tokens website
It is synchronous.
5. according to the method described in claim 1, it is characterised in that judge whether GPS websites are synchronous with each GPS adjacent areas website
Specifically include：
For sending test frame every time, stood firm feedback test response frame according to the transmission time of the GPS websites, the GPS adjacent areas
The time is reached, the theoretical reception time for obtaining the GPS adjacent areas website is calculated；
The theoretical reception time of the GPS adjacent areas website and the actual difference for receiving the time are calculated, the GPS websites are obtained adjacent with the GPS
The clock difference of area's website；
When the clock difference continuous several times are more than reservation threshold, judge that the GPS websites are asynchronous with the GPS adjacent areas website.
6. according to the method described in claim 1, it is characterised in that also include：
If having the GPS adjacent areas website of half all synchronous with the GPS websites just, predetermined GPS tokens website is determined whether
Whether with the GPS Site synch, if it is, judge GPS websites as locking website, otherwise judge the GPS websites as losing lock station
Point.
7. a kind of global position system GPS lockout failure judges and the synchronous system kept, it is characterised in that in advance by each base
Stand and be attached by X2 mouthfuls, form gps clock network, then the system includes：Test initiation module and test judge mould
Block, wherein,
Initiation module is tested, website transmission test in all GPS adjacent areas is given by the cycle or on demand for triggering each GPS websites
Frame；
Judge module is tested, for for each GPS websites, by the transmission time of test frame, receiving time and test sound
Answer the arrival time of frame, judge the GPS websites whether with each GPS adjacent areas Site synch；And determine whether more than half
GPS adjacent areas website it is all synchronous with the GPS websites：If it is, judging that the GPS websites, as locking website, otherwise judge the GPS
Website is losing lock website.
8. system according to claim 7, it is characterised in that the test judge module is additionally operable to, for the GPS not
Synchronous GPS adjacent areas website, determine whether the GPS adjacent areas website whether the GPS adjacent areas Site synch with it, so that determine should
Whether GPS adjacent areas website is losing lock website.
9. system according to claim 7, it is characterised in that the test judge module is additionally operable to, for a losing lock
Website, the drift situation of oneself clock is judged by GPS adjacent areas website or the timestamp of predetermined GPS tokens website offer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110229741.3A CN102932906B (en) | 2011-08-11 | 2011-08-11 | Global positioning system lockout failure judges and the synchronous method and device kept |
| PCT/CN2012/073212 WO2012155700A1 (en) | 2011-08-11 | 2012-03-28 | Method and device for locking failure determination and synchronization maintenance for global positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110229741.3A CN102932906B (en) | 2011-08-11 | 2011-08-11 | Global positioning system lockout failure judges and the synchronous method and device kept |
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| Publication Number | Publication Date |
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| CN102932906A CN102932906A (en) | 2013-02-13 |
| CN102932906B true CN102932906B (en) | 2017-11-03 |
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| CN201110229741.3A Active CN102932906B (en) | 2011-08-11 | 2011-08-11 | Global positioning system lockout failure judges and the synchronous method and device kept |
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| WO (1) | WO2012155700A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109661027B (en) * | 2017-10-10 | 2020-10-16 | 大唐移动通信设备有限公司 | Method and device for determining working state of network equipment |
| CN115022956B (en) * | 2022-04-27 | 2024-01-12 | 海能达通信股份有限公司 | Synchronization method, system, electronic equipment and storage medium of self-organizing network |
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|---|---|---|---|---|
| CN1866814A (en) * | 2005-05-17 | 2006-11-22 | 上海华为技术有限公司 | Clock locking method and its system |
| CN101562822A (en) * | 2008-04-16 | 2009-10-21 | 大唐移动通信设备有限公司 | Method and device for detecting asynchronization between base stations |
| CN102098716A (en) * | 2009-12-10 | 2011-06-15 | 华为技术有限公司 | Method and device for detecting desynchronizing of base station |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001268628A (en) * | 2000-03-21 | 2001-09-28 | Mitsubishi Electric Corp | Inter-base station synchronization system |
| CN101447824A (en) * | 2007-11-26 | 2009-06-03 | 大唐移动通信设备有限公司 | Method for finding GPS timing offset of TD-SCDMA base station and device thereof |
| JP2009177532A (en) * | 2008-01-24 | 2009-08-06 | Sumitomo Electric Ind Ltd | Base station device |
| CN101369824B (en) * | 2008-10-21 | 2012-03-28 | 北京北方烽火科技有限公司 | Base station step-out detection apparatus and method |
| CN102149186B (en) * | 2010-02-10 | 2013-10-09 | 上海华为技术有限公司 | Null interface synchronization method and equipment of time division system |
-
2011
- 2011-08-11 CN CN201110229741.3A patent/CN102932906B/en active Active
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2012
- 2012-03-28 WO PCT/CN2012/073212 patent/WO2012155700A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866814A (en) * | 2005-05-17 | 2006-11-22 | 上海华为技术有限公司 | Clock locking method and its system |
| CN101562822A (en) * | 2008-04-16 | 2009-10-21 | 大唐移动通信设备有限公司 | Method and device for detecting asynchronization between base stations |
| CN102098716A (en) * | 2009-12-10 | 2011-06-15 | 华为技术有限公司 | Method and device for detecting desynchronizing of base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102932906A (en) | 2013-02-13 |
| WO2012155700A1 (en) | 2012-11-22 |
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