CN103957592B - Implementing method and device for time synchronization between femtocells - Google Patents
Implementing method and device for time synchronization between femtocells Download PDFInfo
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Abstract
An implementing method and device for time synchronization between femtocells relate to the field of mobile communication. The implementing method comprises the steps that 1, the femtocell requiring for synchronization sends a synchronization request; 2, a femtocell managing system inquires whether a service area where the femtocell is located includes the femtocell which can provide a reference master clock after receiving the synchronization request, the femtocell requiring for synchronization can adjust time migration according to the reference master clock of the femtocell if the service area includes the femtocell which can provide the reference master clock, or the step 3 is carried out if the service area doesn't include the femtocell which can provide the reference master clock; 3, the femtocell requiring for synchronization starts a UE mode to monitor whether a macro base station exists around the femtocell requiring for synchronization, time synchronization can be finished by monitoring and detecting synchronization signals of the macro base station if the macro base station exists around the femtocell requiring for synchronization, or the step 4 is carried out if the macro base station doesn't exist around the macro base station; 4 the femtocell requiring for synchronization triggers the femtocell managing system to play synchronization message in a group mode, and the femtocell requiring for synchronization can adjust time migration according to the deviation value between the time for the femtocell requiring for synchronization to receive the synchronization message and the time for the other femtocells in the service area where the femtocell requiring for synchronization is located to receive the synchronization message.
Description
Technical field
The present invention relates to moving communicating field, more particularly, to Home eNodeB（HNB/HeNB, Home NodeB/eNodeB）
Time synchronized, reduces broadband metropolitan area network network expense, improves neighboring home base station synchronization precision, does so as to reduce neighboring home base station
The implementation of time synchronized between a kind of Home eNodeB disturbed.
Background technology
With the development of mobile communication, in order to increase channeling degree, expand residence user content, and lift user's body
Test, Home eNodeB is received more and more attention.But Home eNodeB is commercial apart from large scale investment, and also some key technologies have
Stationary problem to be solved, such as between Home eNodeB.Various access standards have different requirements to Frequency Synchronization and Phase synchronization.
In general time division duplex（TDD, Time Division Duplexing）Frequency/phase synchronization, i.e. time synchronized are needed, its
Home eNodeB Phase synchronization trueness error is required in 3 μ s；And FDD（FDD, Frequency Division
Duplexing）Only require Frequency Synchronization.Existing Home eNodeB synchronization solutions include GPS synchronous, air interface synchronization and
IEEE1588 synchronizations etc..
Synchronously have synchronization accuracy high by global positioning system (GPS, Global Positioning System) signal
The characteristics of, but Home eNodeB is located at interior, and indoor weak GPS signals cannot ensure the synchronization accuracy requirement of Home eNodeB, and
Needs install GPS additional in each Home eNodeB so that the cost of Home eNodeB is greatly improved, and this is that user is not acceptant.
Air interface synchronization need not install hardware device additional, it is only necessary to which Home eNodeB receives macro base station and eats dishes without rice or wine information, but needs house
Front yard base station is switched to terminal pattern to intercept macro base station downlink reference signal, and this makes the throughput degradation of Home eNodeB, user
It is affected with experience.The difference of macro base station coverage condition is additionally, since, not every Home eNodeB can receive grand base
The downlink reference signal stood.
The course of work of IEEE1588 time synchronization protocols is divided into two stages.First stage：Give master clock cycle
Sync messages are sent from clock, this sync message Sync includes that the message leaves the time Estimate value of master clock.Master clock with
Follow_Up messages are sent afterwards, and the message carries the accurate delivery time T1 of Sync messages.From clock after Sync messages are received
Write down the accurate arrival time T2 of message.Second stage：The delay measurements stage.From when clockwise master clock send one and postpone request
Delay_Req messages, while recording the actual transmission time T3 of the message.Master clock record postpones the accurate of request message arrival
Time T4, then sends back to T4 from clock in request response message Delay_Resp is postponed.T1, T2, T3, T4 meet：
T2=T1+Delay+Offset （1）
T4=T3+Delay-Offset （2）
Wherein Delay is two ends propagation delay time.From clock according to formula（1）、（2）Reporting is obtained：
Thus synchronization mechanism understand, IEEE1588 protocol requirements uplink and downlink transmission link must be symmetrical, i.e., uplink when
Prolonging must be equal with downlink transfer time delay.To enable Home eNodeB with IP clock servers（IP CLK, IP Clock Server）
In master clock obtain synchronous, IEEE1588 lock in time messages need the return network through Home eNodeB.Due to family's base
Return network stand typically using broadband transmission network, IEEE1588 lock in time messages have to pass through Access Layer, convergence-level, core
Layer forwarding, it is impossible to ensure the identical of uplink downlink.Simultaneously as message has queuing delay in node repeating process trembling
It is dynamic, and a router queue waits the general Normal Distribution W～N of delay variation scope w（0, σ2）, i.e. white noise distribution,
Then through n router forwarding, wait in line delay variation and obey W～N（0, n σ2）.This causes uplink and downlink transmission link time delay
It cannot be guaranteed that symmetrical.
For the Home eNodeB based on TDD, if the time synchronized between base station can not be realized, pole will be caused between neighbor cell
Big interference so as to cannot proper communication.IEEE1588v2 increased delay process and transparent on the basis of IEEE1588v1
The mechanism such as clock, have made to improve in terms of synchronization principles, synchronizing process etc., can meet Home eNodeB time synchronized demand, but
It is required that whole network equipment must all support IEEE1588v2 agreements.
The content of the invention
Present invention aims to the shortcoming and existing Home eNodeB return network of air interface synchronization presence are not all
Support the deficiency of 1588v2 agreements, there is provided combine the implementation of and between a kind of Home eNodeB of the return network time synchronized of eating dishes without rice or wine
And device.
Time synchronized implementation, comprises the following steps between the Home eNodeB：
1）, the synchronous Home eNodeB of request send synchronization request；
2）, home base station management system receive after the synchronous Home eNodeB synchronization request of the request, inquire about the family
Base station place service area is with the presence or absence of the Home eNodeB provided with reference to master clock, if existing, the synchronous Home eNodeB of the request
Time migration adjustment is carried out with the clock with reference to the Home eNodeB of master clock；Otherwise, step 3 is carried out）；
3）, the synchronous Home eNodeB of request start UE patterns, intercept around with the presence or absence of macro base station, if existing, by detecing
Listen the synchronizing signal deadline synchronization for detecting the macro base station；Otherwise, step 4 is carried out）；
4）, the synchronous Home eNodeB triggering home base station management system multicast sync message of the request, the request is same
The Home eNodeB of step according to the time of its reception sync message Home eNodeB place service area synchronous with the request other
Home eNodeB receives the deviant of the time of the sync message and does time migration adjustment.
Step 2）In specifically include following steps：
21）, home base station management system send variable exist really to notify to the synchronous Home eNodeB of request；
22）, home base station management system multicast sync message S give Home eNodeB place service area；
23）, the synchronous Home eNodeB of request and the Home eNodeB with reference to master clock record respectively and feed back it and receive together
The time of step message S is to home base station management system；
24）, home base station management system is according to the synchronous Home eNodeB of the request and the Home eNodeB with reference to master clock
Receive the time of sync message S, the time deviation mean value of the synchronous Home eNodeB of computation requests;
25）, home base station management system time deviation mean value is passed to into the synchronous Home eNodeB of request；
26）The synchronous Home eNodeB of request does time synchronized adjustment according to the time deviation mean value；
27）, through fixed cycle Home eNodeB detection exist whether be true, if very, then return to step 22）, continue
Synchronize with the Home eNodeB with reference to master clock；If it has not, then Home eNodeB carries out step 3）.
The home base station management system can calculate time offset value according to below equation：
Wherein,The time deviation obtained by i ＆ lt sync message S,The is received for the synchronous Home eNodeB of request
The time of the subsynchronous message S of i,It is the time of the Home eNodeB reception i ＆ lt sync message S with reference to master clock.
The home base station management system can calculate time deviation mean value according to below equation：
Wherein, Toffset_1For time deviation mean value, M is family's base of the request synchronization that home base station management system is chosen
Stand and with reference to master clock Home eNodeB receive sync message S group number.
Step 3）Specifically include following steps：
31）, the synchronous Home eNodeB of the request master sync signal that passes through listening detection acquisition macro base station（PSS, Primary
Synchronization Signal), time synchronized and coarse frequency synchronisation are realized, complete initial synchronisation；
32）, the synchronous Home eNodeB of the request auxiliary synchronous signals that pass through listening detection acquisition macro base station（SSS,
Secondary Synchronization Signal) signal, realize smart Frequency Synchronization；
33）, the synchronous Home eNodeB of request is with cycle TmacTo macro base station synchronization, i.e. repeat step 31）～33）.
Step 3）It is further comprising the steps of：
34）, complete after synchronization, Home eNodeB to home base station management system sends its ID and IP, Home eNodeB management system
System will ask synchronous Home eNodeB to be set to the Home eNodeB of the reference master clock of its place service area；And to affiliated service area its
His Home eNodeB issues a change exist variable really to notify；
35）If, home base station management system detect the shutdown of service area internal reference master clock place Home eNodeB or other
Reason exits network, then to affiliated service area, other Home eNodeB issue the information that a change exist variable is no.
Step 4）Specifically include following steps：
41）, home base station management system is to the synchronous Home eNodeB place service area multicast sync message S of request；
42）, the synchronous Home eNodeB of request records time that it receives sync message S and sends to Home eNodeB management and be
System, other Home eNodeB records of the synchronous Home eNodeB place service area of the request receive the sync message S times and send
To home base station management system；
43）, home base station management system according to the synchronous Home eNodeB of the request receive sync message S time and its
The time of place service area other Home eNodeB reception sync message S, the reporting of computation requests synchronization Home eNodeB is put down
Average；
44）, home base station management system reporting mean value is passed to into the synchronous Home eNodeB of request；
45）, request synchronous Home eNodeB time synchronized adjustment is done according to the reporting mean value；
46）, the synchronous Home eNodeB of request every cycle T ' whether detection indexed variable exist is true, if very, then with
Synchronize with reference to the Home eNodeB of master clock, i.e. step 2）.
The home base station management system can calculate the time migration of the synchronous Home eNodeB of the request according to below equation
Value：
Wherein,The reporting obtained by i ＆ lt sync message S,For the synchronous Home eNodeB i ＆ lt of request
The time of sync message S is received,It is same for synchronous other Home eNodeB i ＆ lts of Home eNodeB place service area of the request
The reception time of step message S, N is the quantity of place service area other Home eNodeB in addition to the synchronous Home eNodeB of request.
The home base station management system can calculate time deviation mean value according to below equation：
Wherein, Toffset_2For time deviation mean value, M is family's base of the request synchronization that home base station management system is chosen
The group number stood with other Home eNodeB reception sync message S times of its place service area.
In step 1）Before, it may include following steps：
01）, request Home eNodeB power-up initializing, initialization inner mark variable exist be no；
02）, request Home eNodeB initiate Inform request, send request Home eNodeB numbering ID and IP address information to family
Front yard base station management system, accesses to home control system request；
03）If, home base station management system find request Home eNodeB it is illegal, home base station management system refusal connect
Enter；Otherwise, return is succeeded in registration, and request Home eNodeB receives the information of succeeding in registration.
The present invention proposes that a kind of searching nearby refers to master clock, to realize the time synchronized in regional area between Home eNodeB
Method.Have an advantage in that, required according to Home eNodeB synchronous condition, the characteristics of transmission with reference to broadband metropolitan area network network, to divide
The mode multicast sync message S of service area gives each service area, largely avoid because broadband metropolitan area network propagation delay time is to service
The impact of the timing tracking accuracy in area between each Home eNodeB.Simultaneously as often Existential Space isolation between service area（Such as build
Build between thing, between residential area）, interfering between different service area neighboring home base stations can be made to ignore so that be in
When front yard base station user is with closed pattern access network, without the need for realizing the whole network synchronization using IEEE1588v2.
The present invention also provides time synchronized implementation between a kind of Home eNodeB, including：
Home eNodeB storage device, for storing place service area with the presence or absence of master clock flag information；
Device is sent in Home eNodeB packet sending and receiving, initiates synchronization request for Home eNodeB anti-with to home base station management system
Feedback receives the multicast message time, can send the message that Home eNodeB applies for master clock；Also include home base station management system
The receive capabilities of sync message and time deviation message；
Home eNodeB clock adjustment device, for the adjustment of Home eNodeB time；
Home base station management system and storage device, when whether there is main with storage for the calculating of Home eNodeB time deviation
Clock flag information；
Home base station management system packet sending and receiving device, for home base station management system multicast sync message be handed down to
The time deviation message of Home eNodeB, can send feedback message of the Home eNodeB place service area with the presence or absence of master clock；Simultaneously
The synchronous receive capabilities with feedback time message, and Home eNodeB are asked to apply for master clock message including Home eNodeB
Receive capabilities.
Description of the drawings
Fig. 1 is Home eNodeB differentiated services schematic diagram.
Fig. 2 is Home eNodeB time synchronized flow chart.
Fig. 3 is invention device composition schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawings, technical scheme is expanded on further.
As shown in Figure 1, it is assumed that there are three Home eNodeB service areas on the ground, there is several Home eNodeB in each service area.
Home eNodeB in each service area has same customer access equipment.Illustrate by taking Home eNodeB H1 as an example below, concrete steps
As shown in Figure 2.
（1）In No. 1 service area, now to HMS request register initials, Home eNodeB H1 is receiving registration to Home eNodeB H1
After success, its IP and its port information are reported to HMS immediately.HMS detects the Home eNodeB H1 should belong to No. 1 service area, i.e.,
Home eNodeB H1 merger enters No. 1 service area.It is no to arrange mark own variable exist.
（2）Into request synchronous phase., according to positional informations such as the IP of Home eNodeB H1, whether No. 1 service area of inquiry for HMS
The existing Home eNodeB provided with reference to master clock.
1）If the existing Home eNodeB H2 for providing master clock of HMS No. 1 service area of discovery；
1. it is true that Home eNodeB H1 arranges mark own variable exist.
2. Home eNodeB H1 triggers synchronization request message to HMS.
3. HMS receives synchronization request, and confirms that Home eNodeB H1 is after legitimate base station, per 200 milliseconds of multicast sync messages
S。
4. Home eNodeB H1 and Home eNodeB H2 record message S arrival timesWithAnd it is fed back to HMS.
5. HMS calculates reporting：
After home base station management system collects 10 deviations, its mean value is taken, i.e.,：
6. HMS is again reporting Toffset_1It is handed down to Home eNodeB H1.
7. Home eNodeB H1 is according to reporting Toffset_1Adjust itself clock.
2）Ask No. 1 service area that synchronous Home eNodeB H1 is located not exist and refer to master clock, then Home eNodeB H1 is opened
Beginning is switched to UE patterns, intercepts surrounding with the presence or absence of macro base station；
If 1. there is macro base station M, Home eNodeB H1 obtains the master sync signal and auxiliary synchronous signals of macro base station M, completes
Initial synchronisation.Hereafter, Home eNodeB H1 will be provided for No. 1 service area and be referred to master clock, and home base station management system is to affiliated
Service area other Home eNodeB issue a change exist variable really to notify.In order to prevent what clock crystal oscillator drift from causing
Time migration, Home eNodeB H1 every 2 seconds just and macro base station re-synchronization once.
If 2. Home eNodeB H1 is intercepted less than macro base station signal, Home eNodeB H1 then triggers HMS per 200 milliseconds of multicast synchronizations
Message S.Home eNodeB H1 records receive the message S timesAnd other Home eNodeB equally record connects in No. 1 service area
Between the time receivingI.e. in service area in addition to Home eNodeB H1 other Home eNodeB sync message S the reception time.Each family
Reception time feedbacking to HMS, the time deviation for calculating Home eNodeB H1 by HMS is for base station：
In order to reduce the impact of propagation delay time shake in service area, 10 groups of reporting are selectedDo average, i.e.,：
Home base station management system is by Toffset_2Pass to Home eNodeB H1；Home eNodeB H1 is according to Toffset_2Do the time same
Successive step.Whether each 2 seconds Home eNodeB detection indexed variable exist value is true, if very, then with the family with reference to master clock
Base station synchronizes, i.e. step 2）；If it has not, continuing to be adjusted with the average time of service area other Home eNodeB.
Foregoing invention method can pass through the device shown in Fig. 3 and realize.With reference to Fig. 3, this device includes Home eNodeB storage dress
Put 301, Home eNodeB packet sending and receiving device 302, time deviation mean value calculation and storage device 303, Home eNodeB management system
System packet sending and receiving device 304, Home eNodeB clock adjustment device 305.Its function is as follows with principle：
Home eNodeB storage device 301 is used to mark this service area to whether there is master clock.Home eNodeB packet sending and receiving is sent
Device 302, initiates synchronization request and receives the multicast message time with to home base station management system feedback for Home eNodeB, can send out
Home eNodeB is sent to apply for the message of master clock；With reception home base station management system sync message and time deviation message
Function.Time deviation mean value calculation is used for the calculating of Home eNodeB time deviation and whether there is with storage with storage device 303
Master clock flag information.Home base station management system packet sending and receiving send device 304 for home base station management system multicast synchronization
Message and the time deviation message for being handed down to Home eNodeB, can send Home eNodeB place service area with the presence or absence of the anti-of master clock
Feedback message.Meanwhile, the synchronous receive capabilities with feedback time message are asked with Home eNodeB, and based on Home eNodeB application
The receive capabilities of clock message.Home eNodeB clock adjustment device 305 is used to adjust the time deviation of Home eNodeB.Time deviation
The time deviation mean value that can be issued by home base station management system of acquisition, or the reporting by eating dishes without rice or wine to obtain.
All wide band access users in Indoor environment, and every solitary building are applied in view of Home eNodeB typically all to connect
It is connected to same access device（Such as passageway exchange board, Digital Subscriber Line access and multiplexing device）, it is of the invention that broadband city is realized with this
The time synchronized between Home eNodeB in the net of domain under same access device, meanwhile, formed using the spacing distance between building
Natural interference and insulation.In the case where whole network equipment also not exclusively supports IEEE1588v2 agreements, the present invention can be used as one kind
Transition method,
It is particularly well-suited to the Home eNodeB time synchronized of closed access way used only for household internal member.
In sum, according to Home eNodeB access characteristic and characteristic distributions, using the thought in segmentation service area, such as Fig. 1 institutes
Show, all Home eNodeB under the same access layer equipment of broadband metropolitan area network are divided into a service area, in reducing return network
Impact of the propagation delay time that multinode forwarding brings to timing tracking accuracy, to meet closed femtocell user in service area
Interior timing tracking accuracy is required.
Claims (10)
1. between a kind of Home eNodeB time synchronized implementation, it is characterised in that comprise the following steps：
1), synchronous Home eNodeB is asked to send synchronization request；
2), home base station management system is received after the synchronization request that the synchronous Home eNodeB of request sends, and inquires about Home eNodeB
Place service area is with the presence or absence of the Home eNodeB provided with reference to master clock, if existing, the synchronous Home eNodeB of the request is with this
Time migration adjustment is carried out with reference to the clock of the Home eNodeB of master clock；Otherwise, step 3 is carried out)；
3), ask synchronous Home eNodeB to start UE patterns, intercept surrounding with the presence or absence of macro base station, if existing, by intercepting inspection
Survey the synchronizing signal deadline synchronization of the macro base station；Otherwise, step 4 is carried out)；
4), the synchronous Home eNodeB triggering home base station management system multicast sync message of the request, the request synchronization
Home eNodeB is according to the time of its reception sync message Home eNodeB place service area other families synchronous with the request
Base station receives the deviant of the time of the sync message and does time migration adjustment.
2. according to claim 1 between a kind of Home eNodeB time synchronized implementation, it is characterised in that the step 2)
Specifically include following steps：
21), home base station management system sends variable exist really to notify to the synchronous Home eNodeB of request；
22), home base station management system multicast sync message S gives Home eNodeB place service area；
23), the synchronous Home eNodeB of request and the Home eNodeB with reference to master clock are recorded respectively and feed back it and receive synchronous report
The time of literary S is to home base station management system；
24), Home eNodeB of the home base station management system according to the synchronous Home eNodeB of the request and with reference to master clock is received
The time of sync message S, the time deviation mean value of the synchronous Home eNodeB of computation requests；
25), time deviation mean value is passed to the synchronous Home eNodeB of request by home base station management system；
26) synchronous Home eNodeB is asked to do time synchronized adjustment according to the time deviation mean value；
27) whether it is, true through fixed cycle Home eNodeB detection exist, if very, then returns to step 22), continue and ginseng
The Home eNodeB for examining master clock is synchronized；If it has not, then Home eNodeB carries out step 3).
3. according to claim 2 between a kind of Home eNodeB time synchronized implementation, it is characterised in that family's base
Station administration system calculates time offset value according to below equation：
Wherein,The time deviation obtained by i ＆ lt sync message S,It is same i ＆ lt to be received for the synchronous Home eNodeB of request
The time of step message S,It is the time of the Home eNodeB reception i ＆ lt sync message S with reference to master clock.
4. according to claim 2 between a kind of Home eNodeB time synchronized implementation, it is characterised in that family's base
Station administration system calculates time deviation mean value according to below equation：
Wherein, Toffset_1For time deviation mean value, M be the synchronous Home eNodeB of request that home base station management system is chosen and
The group number of sync message S is received with reference to the Home eNodeB of master clock.
5. according to claim 1 between a kind of Home eNodeB time synchronized implementation, it is characterised in that the step 3)
Specifically include following steps：
31), ask synchronous Home eNodeB that master sync signal (PSS, the Primary of macro base station are obtained by listening detection
Synchronization Signal), time synchronized and coarse frequency synchronisation are realized, complete initial synchronisation；
32), ask synchronous Home eNodeB that auxiliary synchronous signals (SSS, the Secondary of macro base station are obtained by listening detection
Synchronization Signal) signal, realize smart Frequency Synchronization；
33) synchronous Home eNodeB, is asked with cycle TmacTo macro base station synchronization, i.e. repeat step 31)～33).
6. according to claim 5 between a kind of Home eNodeB time synchronized implementation, it is characterised in that also including following
Step：
34), complete after synchronization, Home eNodeB to home base station management system sends its ID and IP, home base station management system will
The synchronous Home eNodeB of request is set to the Home eNodeB of the reference master clock of its place service area；And to other families of affiliated service area
Front yard base station issues a change exist variable really to notify；
If 35), home base station management system detects the Home eNodeB shutdown of service area internal reference master clock place or other reasonses
Exit network, then to affiliated service area, other Home eNodeB issue the information that a change exist variable is no.
7. according to claim 1 between a kind of Home eNodeB time synchronized implementation, it is characterised in that the step 4)
Specifically include following steps：
41), Home eNodeB place service area multicast sync message S of the home base station management system to request synchronization；
42) synchronous Home eNodeB, is asked to record the time of its reception sync message S and send to home base station management system,
Other Home eNodeB records of the synchronous Home eNodeB place service area of the request receive the sync message S times and send to family
Front yard base station management system；
43), home base station management system receives time and its place of sync message S according to the synchronous Home eNodeB of the request
The time of service area other Home eNodeB reception sync message S, the reporting mean value of computation requests synchronization Home eNodeB；
44), reporting mean value is passed to the synchronous Home eNodeB of request by home base station management system；
45) synchronous Home eNodeB, is asked to do time synchronized adjustment according to the reporting mean value；
46) ' whether detection indexed variable exist is true, if very, then with reference every cycle T, to ask synchronous Home eNodeB
The Home eNodeB of master clock is synchronized, i.e. step 2)；
The home base station management system can calculate the time offset value of the synchronous Home eNodeB of the request according to below equation：
Wherein,The reporting obtained by i ＆ lt sync message S,Receive same for the synchronous Home eNodeB i ＆ lt of request
The time of step message S,For synchronous Home eNodeB place service area other Home eNodeB i ＆ lt sync message S of the request
The reception time, the quantity of N other Home eNodeB that are place service area in addition to the synchronous Home eNodeB of request.
8. according to claim 7 between a kind of Home eNodeB time synchronized implementation, it is characterised in that family's base
Station administration system calculates time deviation mean value according to below equation：
Wherein, Toffset_2For time deviation mean value, M be the synchronous Home eNodeB of request that home base station management system is chosen and
The group number of other Home eNodeB reception sync message S times of its place service area.
9. according to the implementation of time synchronized between a kind of claim 1 to 8 arbitrary Home eNodeB, it is characterised in that in step
It is rapid 1) before, it is further comprising the steps of：
01) Home eNodeB power-up initializing, is asked, initialization inner mark variable exist is no；
02), ask Home eNodeB to initiate Inform requests, send request Home eNodeB numbering ID and IP address information gives family's base
Station administration system, accesses to home control system request；
03), if home base station management system finds that request Home eNodeB is illegal, home base station management system refusal is accessed；
Otherwise, return is succeeded in registration, and request Home eNodeB receives the information of succeeding in registration.
10. the device that time synchronized is implemented between a kind of Home eNodeB, it is characterised in that described device includes：
Home eNodeB storage device, for storing place service area with the presence or absence of the Home eNodeB flag information with reference to master clock；
Device is sent in Home eNodeB packet sending and receiving, initiates synchronization request and receives to home base station management system feedback for Home eNodeB
To the multicast message time, the Home eNodeB with reference to master clock is arranged by home base station management system；Also manage including Home eNodeB
The receive capabilities of system synchronization message and time deviation message；
Home eNodeB clock adjustment device, for the adjustment of Home eNodeB time；
Time deviation mean value calculation and storage device, calculate with storage with the presence or absence of with reference to master for Home eNodeB time deviation
The Home eNodeB flag information of clock；
Home base station management system packet sending and receiving device, for home base station management system multicast sync message be handed down to family
The time deviation message of base station, can send feedback of the Home eNodeB place service area with the presence or absence of the Home eNodeB with reference to master clock
Message；Include that Home eNodeB asks the synchronous receive capabilities with feedback time message, and Home eNodeB to apply for ginseng simultaneously
Examine the receive capabilities of the Home eNodeB message of master clock.
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|---|---|---|---|---|
| CN106717078B (en) * | 2014-09-28 | 2020-06-16 | 瑞典爱立信有限公司 | Method and network node for facilitating synchronization in a network |
| CN104394586B (en) * | 2014-11-28 | 2018-04-27 | 广州杰赛科技股份有限公司 | Femto cell, clock server synchronous method and system |
| CN109219063B (en) * | 2017-06-29 | 2022-02-11 | 中国移动通信有限公司研究院 | Communication method and device between base stations and base station |
| CN110662284B (en) * | 2018-06-28 | 2021-05-11 | 华为技术有限公司 | Method and device for correcting time information |
| CN110191507B (en) * | 2018-12-06 | 2021-08-06 | 杭州微萤科技有限公司 | Wide-area ground positioning method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841904A (en) * | 2009-03-20 | 2010-09-22 | 中兴通讯股份有限公司 | Null interface synchronization method and system of home node base station |
| CN102271391A (en) * | 2010-06-03 | 2011-12-07 | 中兴通讯股份有限公司 | Method and system for realizing synchronization among miniature base stations |
| CN103442426A (en) * | 2013-08-27 | 2013-12-11 | 京信通信系统（中国）有限公司 | Method and system for air interface synchronization between base stations |
-
2014
- 2014-05-20 CN CN201410212607.6A patent/CN103957592B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841904A (en) * | 2009-03-20 | 2010-09-22 | 中兴通讯股份有限公司 | Null interface synchronization method and system of home node base station |
| CN102271391A (en) * | 2010-06-03 | 2011-12-07 | 中兴通讯股份有限公司 | Method and system for realizing synchronization among miniature base stations |
| CN103442426A (en) * | 2013-08-27 | 2013-12-11 | 京信通信系统（中国）有限公司 | Method and system for air interface synchronization between base stations |
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