CN103458494B

CN103458494B - The method and apparatus of base station synchronization

Info

Publication number: CN103458494B
Application number: CN201210172058.5A
Authority: CN
Inventors: 谌丽; 秦飞; 傅婧
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-05-29
Filing date: 2012-05-29
Publication date: 2017-03-29
Anticipated expiration: 2032-05-29
Also published as: CN103458494A

Abstract

The embodiment of the invention discloses a kind of method and apparatus of base station synchronization, is related to wireless communication technology field, for solving the problems, such as how the base station based on local IP access systems carries out effectively synchronization.In this programme, the layer, sync grade of the base station after effective synchronisation source is not searched is set to minimum layer, sync grade, and determines whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station by base station；If conflict, the layer, sync grade of the base station, and the adjacent base station for selecting to conflict are reset as synchronisation source, realized synchronous with the synchronisation source；If not conflicting, the layer, sync grade of the base station is fixed as into minimum layer, sync grade, so that adjacent base station is synchronized with the base station.It can be seen that, this programme solves the problems, such as how base station is synchronized when effective synchronisation source is not searched.

Description

The method and apparatus of base station synchronization

Technical field

The present invention relates to wireless communication field, more particularly to a kind of method and apparatus of base station synchronization.

Background technology

The data traffic requirement growing in order to meet user, it is a kind of to be based on Long Term Evolution（Long Term Evolve, LTE）The base station IP access systems of system are arisen at the historic moment.Base station IP access systems pass through to build Local wireless network, By base station（Access Point, are also called access point base station）Equipment provides the user the network coverage and wirelessly access.By The network architecture of flattening is employed in base station IP access systems, it can simply and cost effectively realize user equipment （User Equipment, UE）Access to external network, as shown in Figure 1.This framework is based entirely on the framework of access network, The core net of LTE system is eliminated, data transfer path and network complexity is simplified.This base station IP access architectures are again Referred to as LTE-Hi systems.

Base station IP access systems are based on TD SDMA-Long Term Evolution（TD-SCDMA Long Term Evolution, TD-LTE）Technology, has followed TD-LTE system for the requirement of synchronization among base stations.This is because adopting in up-downgoing With the time division duplex of identical frequency（TDD Time Division Duplex, TDD）In system, if asynchronous between each base station, The uplink that neighbor cell terminal sends can bring interference, only strict synchronization just keep away to the transmission reception of this cell downlink Exempt from serious interference.

With base station IP access system more similarly LTE Femto, i.e. LTE femtocell（Home eNodeB, HeNB）.

LTE femtocell mainly adopts following three kinds of simultaneous techniquess：

Firstth, global positioning system（Global Positioning Systems, GPS）；

If HeNB is mounted with GPS, gps satellite synchronizing signal is obtained in that, GPS just can be provided precisely for which Sync identification（100ns）, but the use of GPS is limited to environment, especially environment cannot almost work indoors, Er Qiecheng This is higher.

Secondth, Institute of Electrical and Electronics Engineers（IEEE Institute of Electrical and Electronics Engineers, IEEE）1588v2；

Under good back haul link network support（It can be the fiber optic Ethernet of operator's laying）, 1588v2 also can The synchronization accuracy of Microsecond grade is provided, but under not all scene, can all have high-quality back haul link to support, Er Qie electricity Cable and x Digital Subscriber Line road（X digital subscriber line, XDSL）Also all there is a problem that time delay is unstable, Considerable influence can be produced to synchronization accuracy.

3rd, network monitoring；

Network monitoring scheme cannot can work under conditions of use in GPS and 1588v2 schemes, therefore for TD-LTE For HeNB, this is a kind of requisite synchronization mechanism.Network monitoring mechanism is referred to by receiving synchronized network section Point（Synchronisation source）Signal obtaining synchronous method.Forbid transmitting after HeNB starts but before there is no synchronously, HeNB must first go through monitor synchronization node signal carry out Network Synchronization after can just carry out normal transmission, and subsequently also Periodically to be safeguarded to synchronous.For HeNB, its synchronisation source can select synchronized macro base station（MeNB）, HeNB Timing is obtained by the synchronizing signal or reference markss of reception MeNB, as shown in Figure 2 a.But when macrocell network is covered It is undesirable, or HeNB, when being located at building depths, the synchronizing signal for obtaining macro base station can be affected by certain, now HeNB Synchronization can be realized by way of multi-hop, i.e., by synchronizing with synchronized HeNB, as shown in Figure 2 b.

For multi-hop synchronization, need to introduce the concept of layer, sync, layer, sync can be defined as needing synchronous HeNB with The jumping figure passed through between GPS sources, the upper level source that the layer, sync grade of certain HeNB is more synchronous than its acquisition are big by 1.For example, Fig. 2 a and The layer, sync grade of the MeNB in Fig. 2 b is 2 for the layer, sync grade of 1, HeNB2 for the layer, sync grade of 0, HeNB1.

3GPP discusses following three kinds of network monitoring mechanism：

First, based on master sync signal（Primary Synchronized Signal, PSS）/ auxiliary synchronous signals （Secondary Synchronization Signal, SSS）Monitoring.Under this mechanism, HeNB is by receiving synchronization node PSS/SSS synchronize, during mourning in silence, the PSS/SSS of tracking HeNB can not carry out normal transmission.

Second, based on multimedia broadcast multi-broadcasting business Single Frequency Network（Multimedia Broadcast multicast Service Single Frequency Network, MBSFN）The monitoring of subframe.HeNB is by being claimed as subframe of mourning in silence MBSFN sub-frame, UE then ignore the subframe when receiving.The method is all suitable for for single-hop and multi-hop synchronization mechanism, in multi-hop feelings Under condition, some subframes can be claimed as MBSFN sub-frame, the HeNB statements of different layers with certain cycle by each layer of HeNB MBSFN sub-frame position be different.Maximum MBSFN sub-frame configuration is limited to, it is maximum to support 4 to jump.

3rd, based on the monitoring that TDD special subframes are configured.By configuring less descending pilot frequency time slot to HeNB （DwPTS）Symbol and the DwPTS symbols for giving MeNB configurations more, so that HeNB can protect time slot using which（GP）When Between measuring the exclusive pilot signal of the cell of MeNB（Cell-specific reference signals, CRS）It is same to obtain Step.But as general DwPTS equipping rules are that covering high power capacity cell little for interior etc. adopts more DwPTS symbols Configuration, for outdoor positioning is in the then less DwPTS configurations of symbolization of the wide cell for covering, and the configuration of this synchronous method will Ask then just with the network configuration principle of DwPTS conversely, therefore the network configuration to operator is constituted a definite limitation, and this The method of kind can not typically support the Network Synchronization of the 2 jump above.

The system accessed based on local IP is generally used for interior and hot spot region, and is likely to using different from LTE system High band, it is difficult to using macro base station as synchronisation source carry out network monitoring realize it is synchronous, even if being based partially on local IP accesses system The base station of system（Hereinafter referred LTE-Hi base station）Absolute synchronization source is obtained, when LTE-Hi base stations are densely deployed in indoor hot zone During domain, the maximum layer, sync number of plies of TD-LTE network monitorings mechanism regulation can not meet requirement.

To sum up, the base station based on local IP access systems indoors hot spot region dense deployment when, base station cannot obtain absolutely To synchronisation source, or effective synchronisation source cannot be obtained as the maximum synchronization numbers of plies of TD-LTE are limited.

The content of the invention

The embodiment of the present invention provides a kind of method and apparatus of base station synchronization, for solving based on local IP access systems How base station carries out the problem of effective synchronization.

A kind of method of base station synchronization, the method include：

The layer, sync grade of the base station is set to minimum layer, sync etc. after effective synchronisation source is not searched by base station Level, and determine whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station；

If conflict, the layer, sync grade of the base station, and the adjacent base station for selecting to conflict are reset as synchronisation source, realized It is synchronous with the synchronisation source；

If not conflicting, the layer, sync grade of the base station is fixed as into minimum layer, sync grade, so that adjacent base station and the base Station synchronizes.

A kind of method of base station synchronization, the method include：

Base station receives the configuration information comprising layer, sync grade of gateway device transmission；

Base station arranges the layer, sync grade of itself according to the configuration information；If the layer, sync grade of the base station is not minimum Layer, sync grade, it is determined that synchronisation source, and realize synchronous with the synchronisation source.

A kind of method of base station synchronization, the method include：

Base station reports the positional information of the base station in the registration process to OAM；Receive that OAM returns comprising adjacent base station The configuration information of layer, sync class information；The adjacent base station is the same of the base station that OAM is determined according to the positional information of the base station The elementary adjacent base station of step layer；

Synchronisation source is searched for according to the layer, sync class information of the adjacent base station in base station, and synchronizes with the synchronisation source.

A kind of synchronizing information feedback method, the method include：

Gateway device receives the information of the layer, sync grade of the base station that base station sends；

Gateway device determines whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station, and according to determination As a result feedback information is returned to base station.

A kind of synchronizing information feedback method, the method include：

Gateway device determines the layer, sync grade of base station；

Configuration information comprising the layer, sync grade is sent to base station by gateway device.

A kind of synchronizing information feedback method, the method include：

OAM receives the positional information of the base station that base station is reported in registration process；

OAM determines the elementary adjacent base station of the layer, sync of the base station according to the positional information of the base station, and will be comprising this The configuration information of the layer, sync class information of adjacent base station is sent to the base station.

A kind of base station, the base station include：

Setting unit, for, after effective synchronisation source is not searched, the layer, sync grade of the base station being set to minimum Layer, sync grade；

Determining unit, for determining whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station；

First processing units, for when the determining unit determines and conflicts, resetting the layer, sync grade of the base station, And the adjacent base station for selecting to conflict is used as synchronisation source, realize synchronous with the synchronisation source；

Second processing unit, for when the determining unit determines and do not conflict, the layer, sync grade of the base station being fixed For minimum layer, sync grade, so that adjacent base station is synchronized with the base station.

A kind of base station, the base station include：

Receiving unit, for receiving the configuration information comprising layer, sync grade of gateway device transmission；

Lock unit, for the layer, sync grade of itself is arranged according to the configuration information；If layer, sync of the base station etc. Level is not minimum layer, sync grade, it is determined that synchronisation source, and is realized synchronous with the synchronisation source.

A kind of base station, the base station include：

Reporting unit, for the positional information of the base station is reported in the registration process to OAM；

Receiving unit, for receiving the configuration information of the layer, sync class information comprising adjacent base station of OAM returns；The neighbour Base station is the elementary adjacent base station of layer, sync of the base station that OAM is determined according to the positional information of the base station；

Lock unit, for searching for synchronisation source according to the layer, sync class information of the adjacent base station, and is entered with the synchronisation source Row is synchronous.

A kind of gateway device, the gateway device include：

Receiving unit, for receiving the information of the layer, sync grade of the base station of base station transmission；

Feedback unit, for determining whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station, and root Feedback information is returned to base station according to determination result.

A kind of gateway device, the gateway device include：

Determining unit, for determining the layer, sync grade of base station；

Transmitting element, for the configuration information comprising the layer, sync grade is sent to base station.

A kind of OAM, the OAM include：

Receiving unit, for receiving the positional information of the base station that base station is reported in registration process；

Dispensing unit, the elementary adjacent base station of the layer, sync for the base station is determined according to the positional information of the base station, And the configuration information of the layer, sync class information comprising the adjacent base station is sent to into the base station.

In the first base station synchronization scheme provided in an embodiment of the present invention, base station after effective synchronisation source is not searched, The layer, sync grade of the base station is set to into minimum layer, sync grade, and determine the layer, sync grade of the base station whether with adjacent base station Layer, sync grade conflict；If conflict, the layer, sync grade of the base station is reset, and the adjacent base station for conflicting is selected as same Step source, realizes synchronous with the synchronisation source；If not conflicting, the layer, sync grade of the base station is fixed as into minimum layer, sync etc. Level, so that adjacent base station is synchronized with the base station, it is seen then that this programme automatically adjusts layer, sync grade by base station distribution formula, solution Determine the problem how base station is synchronized when effective synchronisation source is not searched.

In second base station synchronization scheme provided in an embodiment of the present invention, base station receive gateway device send comprising synchronization The configuration information of layer grade, arranges the layer, sync grade of itself according to the configuration information；If the layer, sync grade of the base station is not Minimum layer, sync grade, it is determined that synchronisation source, and realize synchronous with the synchronisation source.It can be seen that, this programme by gateway device to Base station indicates its layer, sync grade, and base station is synchronized according to the layer, sync grade for indicating, so as to solve how base station is carried out Synchronous problem.

In the third base station synchronization scheme provided in an embodiment of the present invention, base station reports this in the registration process to OAM The positional information of base station, receives the configuration information of the layer, sync class information comprising adjacent base station that OAM is returned, according to the adjacent base station Layer, sync class information search synchronisation source, and synchronize with the synchronisation source.It can be seen that, this programme is indicated to base station by OAM The layer, sync grade of synchronisation source, base station according to indicate layer, sync hierarchical search synchronisation source to synchronize, so as to solve base Stand the problem how to synchronize.

Description of the drawings

Fig. 1 is the configuration diagram of base station IP access systems in prior art；

Fig. 2 a and Fig. 2 b is network monitoring schematic diagram of mechanism in prior art；

Fig. 3 a are the first base station synchronization method schematic flow sheet for base station side provided in an embodiment of the present invention；

Fig. 3 b are the first base station synchronization method schematic flow sheet for gateway device side provided in an embodiment of the present invention；

Fig. 4 a are second base station synchronization method schematic flow sheet for base station side provided in an embodiment of the present invention；

Fig. 4 b are second base station synchronization method schematic flow sheet for gateway device side provided in an embodiment of the present invention；

Fig. 5 a are the third base station synchronization method schematic flow sheet for base station side provided in an embodiment of the present invention；

Fig. 5 b are the third base station synchronization method schematic flow sheet for OAM sides provided in an embodiment of the present invention；

Fig. 6 a and Fig. 6 b synchronizes the schematic diagram of layer negotiation mechanism for the AP in the embodiment of the present invention and GW；

Fig. 6 c specify the schematic diagram of AP layer, sync grades for the GW in the embodiment of the present invention；

Fig. 6 d specify the schematic diagram of AP layer, sync grades for the AP requests in the embodiment of the present invention, GW；

Fig. 6 e confirm the schematic diagram of base station synchronization layer grade setting for the GW in the embodiment of the present invention by adjacent base station；

Fig. 6 f are that the GW in the embodiment of the present invention refuses the schematic diagram that base station synchronization layer grade is arranged by adjacent base station；

Fig. 7 is the structural representation of the first base station provided in an embodiment of the present invention；

Fig. 8 is the structural representation of second base station provided in an embodiment of the present invention；

Fig. 9 is the structural representation of the third base station provided in an embodiment of the present invention；

Figure 10 is the structural representation of the first gateway device provided in an embodiment of the present invention；

Figure 11 is the structural representation of second gateway device provided in an embodiment of the present invention；

Figure 12 is the structural representation of OAM equipment provided in an embodiment of the present invention.

Specific embodiment

In order to solve the problems, such as how the base station based on local IP access systems carries out effectively synchronization, the embodiment of the present invention is carried For the method for the first base station synchronization.

Referring to Fig. 3 a, for base station side, the method for the first base station synchronization provided in an embodiment of the present invention, including following step Suddenly：

Step 301：The layer, sync grade of the base station is set to minimum same after effective synchronisation source is not searched by base station Step layer grade, and determine whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station；Here, do not searched The synchronisation source of effect refers to that the layer, sync grade for not searching synchronisation source or the synchronisation source for searching reaches maximum layer, sync grade；

Step 302：If conflict, the layer, sync grade of the base station is reset, and the adjacent base station for conflicting is selected as same Step source, realizes synchronous with the synchronisation source；

Step 303：If not conflicting, the layer, sync grade of the base station is fixed as into minimum layer, sync grade, so that adjacent base Stand and the base station synchronizes.

In step 301, determine whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station, implement Can be using one of the following two kinds method：

First, the layer, sync grade of the base station whether layer, sync grade with adjacent base station is determined by searching for adjacent cell signal Conflict；

Specifically, adjacent cell signal is searched within the time of the first setting duration, if not searching layer, sync grade for most The signal of the co-frequency neighbor cell of low layer, sync grade, it is determined that the layer, sync grade of the base station is with the layer, sync grade of adjacent base station not Conflict；

If searching the signal of the co-frequency neighbor cell that layer, sync grade is minimum layer, sync grade, duration is set second Time in continue monitor the co-frequency neighbor cell signal, if second setting duration time in the co-frequency neighbor cell synchronization Layer grade is minimum layer, sync grade always, it is determined that the base station that the layer, sync grade of the base station is located with the co-frequency neighbor cell Layer, sync grade conflicts, if the layer, sync grade of the co-frequency neighbor cell changes within the time of the second setting duration, really The layer, sync grade of the fixed base station is not conflicted with the layer, sync grade of adjacent base station.

Second, the information of the layer, sync grade of the base station is sent to gateway device；It is true according to the feedback information of gateway device Whether the layer, sync grade of the fixed base station is conflicted with the layer, sync grade of adjacent base station.

Specifically, if the feedback information of gateway device is confirmation, it is determined that the layer, sync grade of the base station and adjacent base The layer, sync grade stood does not conflict, if the feedback information of gateway device is refusal information, it is determined that the layer, sync grade of the base station Conflict with the layer, sync grade of adjacent base station；

The confirmation is synchronization stratum information and information of adjacent cells of the gateway device in all base stations according to storage, really The information that the layer, sync grade of the fixed base station is sent after not conflicted with the layer, sync grade of adjacent base station；The refusal information is gateway Synchronization stratum information and information of adjacent cells of the equipment in all base stations according to storage, determine the layer, sync grade and adjacent base of the base station The information sent after the layer, sync grade conflict stood；Or,

The confirmation be gateway device after the information of the layer, sync grade by the base station is sent to each adjacent base station, connect Receive the confirmation or the information sent when setting and the reply of adjacent base station not being received in duration of adjacent base station reply；It is described to refuse Absolutely information be gateway device after the information of the layer, sync grade by the base station is sent to adjacent base station, receive adjacent base station reply The information sent during refusal information.

Accordingly, select the adjacent base station for conflicting as synchronisation source in step 302, implement and can adopt the following two kinds side One of method：

First, during the information of the adjacent base station comprising conflict in the refusal information for receiving, select indicated by the information Adjacent base station is used as synchronisation source；

Second, adjacent cell signal is searched for, the base station conduct for selecting the elementary adjacent cell of layer, sync for searching to be located Synchronisation source.

In step 302, the layer, sync grade of the base station is reset, and implementing can be as follows：By the synchronization of the base station Layer grade is re-set as the layer, sync grade of a grade higher than minimum layer, sync grade.

Such as Fig. 3 b, for gateway device side, the first synchronizing information feedback method provided in an embodiment of the present invention, including with Lower step：

Step 311：Gateway device receives the information of the layer, sync grade of the base station that base station sends；

Step 312：Gateway device determines whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station, and Feedback information is returned to base station according to determination result.

Implementing for step 312 can be as follows：

If gateway device is according to the synchronization stratum information of all base stations of storage（Including layer, sync grade）And information of adjacent cells, Determine that the layer, sync grade of the base station is not conflicted with the layer, sync grade of adjacent base station, then confirmation is returned to base station；If according to The synchronization stratum information and information of adjacent cells of all base stations of storage, determines the layer, sync grade of the base station and the layer, sync of adjacent base station Grade conflicts, then return refusal information to base station；Or,

Gateway device is sent to the information of the layer, sync grade of the base station after adjacent base station, if receiving adjacent base station reply Confirmation does not receive the reply of adjacent base station in setting duration, then return confirmation to base station；If receiving adjacent base Stand reply refusal information, then to base station return refusal information.

In order to solve the problems, such as how the base station based on local IP access systems carries out effectively synchronization, the embodiment of the present invention is carried For the method for second base station synchronization.

Referring to Fig. 4 a, for base station side, the method for second base station synchronization provided in an embodiment of the present invention, including following step Suddenly：

Step 401：Base station receives the configuration information comprising layer, sync grade that gateway device sends；

Step 402：Base station arranges the layer, sync grade of itself according to the configuration information, will the layer, sync grade of itself The layer, sync grade being set in the configuration information；If the layer, sync grade of the base station is not minimum layer, sync grade, it is determined that Synchronisation source, and realize synchronous with the synchronisation source；If the layer, sync grade of the base station is minimum layer, sync grade, adjacent base station meeting Synchronize with the base station.

In step 401, base station receives the configuration information comprising layer, sync grade of gateway device transmission, and implementing can With as follows：

Base station receives the configuration information comprising layer, sync grade of gateway device transmission after network is linked into；Or,

Base station sends synchronization level request message to gateway device after effective synchronisation source is not searched；Receive gateway The configuration information comprising layer, sync grade that equipment is returned.

The method of above-mentioned determination synchronisation source can be as follows：

When also information of adjacent cells is included in the configuration information for receiving, layer, sync grade is determined according to the information of adjacent cells The base station that minimum adjacent cell is located, using the base station for determining as synchronisation source；Here information of adjacent cells can include adjacent cell The information such as layer, sync grade；Or,

Search adjacent cell signal, selects the base station that the elementary adjacent cell of the layer, sync for searching is located as synchronization Source.

Preferably, after base station receives the configuration information, base station receives gateway device to be occurred to become in network design The reconfiguration information sent after change, comprising the layer, sync grade after updating in the reconfiguration information；Base station reconfigures letter according to this Breath reset the layer, sync grade of itself, will the layer, sync grade of itself be set to layer, sync in the reconfiguration information etc. Level；If the layer, sync grade of the base station is not minimum layer, sync grade after resetting, redefine synchronisation source, and realize with The synchronization of the synchronisation source for redefining.

Likewise, the above-mentioned method for redefining synchronisation source can be as follows：

When also information of adjacent cells is included in the reconfiguration information for receiving, layer, sync etc. is determined according to the information of adjacent cells The base station that the minimum adjacent cell of level is located, using the base station for determining as synchronisation source；Or,

As shown in Figure 4 b, for gateway device side, second synchronizing information feedback method provided in an embodiment of the present invention, bag Include following steps：

Step 411：Gateway device determines the layer, sync grade of base station；In advance the layer, sync grade of base station can be stored in In gateway device, gateway device determines the layer, sync grade of base station according to the information of storage；

Step 412：Configuration information comprising the layer, sync grade is sent to base station by gateway device.

In step 412, the configuration information comprising the layer, sync grade is sent to base station by gateway device, and implementing can With as follows：

Configuration information comprising the layer, sync grade is sent to base station after base station is linked into network by gateway device； Or,

Gateway device, will after the synchronization level request message sent when base station does not search effective synchronisation source is received Configuration information comprising the layer, sync grade is sent to base station.

Preferably, after the configuration information comprising layer, sync grade is sent to base station by gateway device, gateway device exists Network design sends reconfiguration information to base station after changing, comprising the layer, sync grade after updating in the reconfiguration information. Layer, sync grade after renewal is the layer, sync grade reset for base station after network design changes.

In order to solve the problems, such as how the base station based on local IP access systems carries out effectively synchronization, the embodiment of the present invention is carried For the method for the third base station synchronization.

Referring to Fig. 5 a, for base station side, the method for the third base station synchronization provided in an embodiment of the present invention, including following step Suddenly：

Step 501：Base station is to maintenance and management entity（OAM）Registration process in report the positional information of the base station； Receive the configuration information of the layer, sync class information comprising adjacent base station that OAM is returned；The adjacent base station is positions of the OAM according to the base station The elementary adjacent base station of layer, sync in each adjacent base station of the base station that confidence breath determines；

Step 502：Layer, sync hierarchical search synchronisation source of the base station according to the adjacent base station in configuration information, and with the synchronisation source Synchronize, i.e. the signal of adjacent cell of the search comprising the layer, sync grade, it is using the adjacent cell as synchronisation source and synchronous with this Source synchronizes.

Preferably, after base station is synchronized with the synchronisation source for searching, following steps can be performed：

If A, success synchronous with the synchronisation source, the synchronization for returning the information comprising the synchronisation source to OAM are successfully indicated；

If B, the synchronization failure with the synchronisation source, the synchronization failure for returning the information comprising the synchronisation source to OAM is indicated, And the configuration information of the layer, sync class information comprising the adjacent base station for redefining that OAM is returned to is received, according to again true The layer, sync class information of fixed adjacent base station re-searches for synchronisation source, and synchronizes with the synchronisation source for re-searching for, and returns Step A.

Preferably, after step 501, base station receives the configuration that OAM is resend after network design changes Layer, sync class information comprising the adjacent base station for redefining in information, the configuration information for resending；According to redefining The layer, sync class information of adjacent base station re-search for synchronisation source, and synchronize with the synchronisation source for re-searching for；If synchronous Success, then return to OAM and successfully indicate, and it is more same than the synchronisation source that re-searches for reset the layer, sync grade of the base station The high one-level of step layer grade；If synchronization failure, keep current layer, sync grade, and send layer, sync grade to OAM keeping not The instruction of change.

As shown in Figure 5 b, for OAM sides, the method for the third base station synchronization provided in an embodiment of the present invention, including it is following Step：

Step 511：OAM receives the positional information of the base station that base station is reported in registration process；

Step 512：During OAM determines each adjacent base station of the base station according to the positional information of the base station, layer, sync is elementary Adjacent base station, and the configuration information of the layer, sync class information comprising the adjacent base station is sent to into the base station.

Further, after OAM sends configuration information to base station, if OAM receive base station transmission comprising synchronization The synchronization of the information in source successfully indicates, then successfully indicates to determine and store the layer, sync grade of the base station, the base according to the synchronization The layer, sync grade stood is defined as the layer, sync grade of a grade higher than the layer, sync grade of the synchronisation source；

If the synchronization failure for receiving the information comprising synchronisation source of base station transmission is indicated, positions of the OAM according to the base station Confidence breath redefines an adjacent base station of the base station；And matching somebody with somebody the layer, sync class information comprising the adjacent base station for redefining Confidence breath is sent to the base station.Here, the adjacent base station for redefining can be not selected mistake adjacent base station in layer, sync grade Minimum adjacent base station, if there is no the adjacent base station of not selected mistake, the adjacent base station for redefining can be the OAM, the OAM's Layer, sync class information could be arranged to sky, and after base station and the OAM are synchronized and returned confirmation of synchronization message, OAM is by base The layer, sync grade stood is recorded as minimum layer, sync grade.

Preferably, after OAM sends configuration information to base station, OAM after network design changes, according to the base The positional information stood redefines an adjacent base station of the base station, that is, redefine the elementary neighbour of layer, sync in each adjacent base station Base station, and the configuration information of the layer, sync class information comprising the adjacent base station for redefining is sent to into the base station.If follow-up OAM The synchronization for receiving the information comprising synchronisation source of base station transmission successfully indicates, then successfully indicates to determine and store according to the synchronization The layer, sync grade of the base station, the layer, sync grade of the base station are defined as a grade higher than the layer, sync grade of the synchronisation source Layer, sync grade.

With reference to specific embodiment, the present invention will be described：

The present invention proposes a kind of base station synchronization method based on local IP access systems：By based on local IP access systems Between network node, self adaptation is coordinated, synchronisation source relation in adjustment network design, realizes effectively synchronous between base station.

Specifically include three kinds of situations：

Situation 1：Base station distribution formula automatically adjusts layer, sync grade.

Base station is adjusted to itself frequency apart from the farthest available frequency of adjacent cell frequency when no synchronisation source is available, And it is customized for minimum layer, sync 0.Adjacent base station can be synchronized and be set to more higher leveled layer, sync.When multiple adjacent base stations Declare for lowermost layer synchronisation source when, need introduce Hedging mechanism.

Hedging mechanism is：Itself layer, sync grade is set to 0 by base station 1, and in time T0 searches for the same of neighbor cell Step layer is arranged, if T0 time-out does not all search out the co-frequency neighbor cell of layer, sync grade 0, base station 1 will be itself layer, sync grade steady It is set to 0；If the layer, sync grade for searching out co-frequency cell 2 is 0, starts intervalometer T1, and persistently monitor cell 2, if timing 2 layer, sync grade of device T1 time-out cells is still 0, and itself layer, sync is set to 1 by base station 1, and using 2 place base station of cell as synchronization Source.T0 is set greater than the value the time required to all adjacent cell layer, sync grades of base station measurement, and T1 is set greater than remeasuring Value the time required to one cell synchronous layer grade, T0 and T1 can be configured by OAM or base station is voluntarily arranged.Further to avoid touching Hit, T1 can be set to take arbitrary value by being uniformly distributed in an interval [Tmin, Tmax].

Situation 2：GW is managed collectively the layer, sync grade of adjacent base station；

Scheme one：GW stores the synchronization stratum information and information of adjacent cells of all base stations, when base station determines itself layer, sync etc. During level, layer, sync grade is sent to GW and determine request message, wherein the layer, sync grade voluntarily selected comprising base station, if GW is really Fixed base station selected layer, sync grade is not clashed with other adjacent base stations, to base station feedback confirmation, such as Fig. 6 a；It is otherwise anti- Feedback refuse information simultaneously carries the layer, sync class information configured for base station, such as Fig. 6 b.

Scheme two：GW directly configures layer, sync grade for base station；

GW stores base station synchronization layer class information and information of adjacent cells, as fig. 6 c, after base station access network network, Xiang Ji Send configuration of standing information, including layer, sync grade, can also include needing synchronous information of adjacent cells, and base station determines layer, sync Grade, and synchronisation source is determined according to the configuration for being received.When there is base station switch machine to make network design situation change, GW can To send reconfiguration message to AP, to reconfigure layer, sync class information of AP etc..Or,

As shown in fig 6d, after base station access network network, to GW send configuration solicited messages, wherein can include desired same Step layer grade, GW, can also include needing the adjacent little of synchronization to base station send configuration information including the layer, sync grade of configuration Area's information, base station determine layer, sync grade, and determine synchronisation source according to the configuration for being received.When there is base station switch Ji Shi Network Dept.s When administration's situation changes, GW can send reconfiguration message to AP, to reconfigure layer, sync class information of AP etc..

Scheme three：GW collects layer, sync class information to adjacent base station and feeds back；

GW does not store the synchronization stratum information of base station, after base station selected layer, sync grade, sends layer, sync grade letter to GW Breath；GW sends the inquiry of layer, sync grade to other base stations, if all adjacent base stations are not replied or reply confirmation, GW is to this Base station feedback confirmation, such as Fig. 6 e；If an adjacent base station replys refusal information and carries synchronization stratum information, this is believed by GW Breath is transmitted to the base station, such as Fig. 6 f.The base station adjusts layer, sync grade and according to adjacent cell layer, sync grade according to feedback information State determines synchronisation source.

Adjacent base station judges that the foundation that feedback acknowledgment is still refused is whether that the layer, sync grade current with itself conflicts.For example Adjacent base station AP1 and AP2 are set to layer, sync grade 0, and AP2 will feed back refuse information and advise that AP1 is set to layer, sync grade 1.

Situation 3:：Base station synchronization layer grade is configured by OAM；

Here OAM is network management unit（Network Manager, NM）, numerous AP are managed below.OAM can be deposited Store up the positional information and its layer, sync grade of all APs registered with which.

After one new AP start, report the positional information of oneself in OAM registration processes, OAM according to positional information, greatly Cause to determine the adjacent base station around which（That is AP）Information, selects the elementary adjacent base station of layer, sync in adjacent base station, and in configuration ginseng Adjacent base station and layer, sync grade are sent to into AP in number.AP determines synchronisation source according to the configuration information for receiving and synchronizes.If Synchronous success, then return to OAM and successfully indicate, OAM determines the layer, sync grade of the AP according to its instruction and stores；If synchronously not Success, return unsuccessfully indicate that OAM can continue to select other adjacent base stations as its synchronisation source according to positional information, and in configuration Adjacent base station and layer, sync grade are sent to into AP in parameter.

When there is base station switch machine to make network design situation change, can be to AP send configuration message, to match somebody with somebody again Put the layer, sync grade and adjacent base station information of AP.

Embodiment one：Base station voluntarily adjusts layer, sync grade；

Step one：The layer, sync grade of itself, if searching synchronisation source, is set to synchronisation source by base station search synchronisation source Layer, sync grade adds 1, and network monitoring is carried out to synchronisation source to realize synchronization, and layer, sync grade determination process terminates.If no Synchronisation source or no effective synchronisation source（Refer to that without effective synchronisation source the layer, sync grade of the synchronisation source for searching has been maxed out Grade）, execution step two.

Step 2：Base station arranges working frequency points to farthest available frequency with a distance from adjacent cell frequency, and arranges itself Layer, sync grade be 0.Start intervalometer T0, search for the layer, sync grade of adjacent cell, if T0 time-out is not all searched together Walk the adjacent cell that layer grade is 0, execution step four；If searching the adjacent cell that layer, sync grade is 0, execution step three.

Step 3：Start intervalometer T1, detect the adjacent cell that layer, sync grade is 0, if the adjacent cell changes when T1 is overtime Become layer, sync grade, then execution step four, the synchronization level of itself has been set to into 1 otherwise, and with the adjacent cell as synchronisation source, Terminate layer, sync grade determination process.

Step 4：The layer, sync grade for fixing this base station is 0.

Further illustrate by taking AP1, AP2 as an example.The T0 of AP1, AP2 is identical value, T1-AP1 and T1-AP2 by default configuration To take random number by being uniformly distributed between [Tmin, Tmax].

AP1 and AP2 is opened simultaneously in adjacent position, and all no effective synchronisation source.AP1, AP2 are set to layer, sync simultaneously Grade 0, and each self-starting T0.AP1 has found AP2, starts T1-AP1, and when T1-AP1 is overtime, AP2 layer, syncs grade is still 0, then AP1 Layer, sync grade is set to 1.AP2 has found AP1, starts T1-AP2, and period detects AP1 layer, sync grades and is changed to 1, terminates T1-AP2, maintains layer, sync grade to be 0.

Embodiment two：Consult layer, sync grade with GW in base station；

Step 2：Base station arranges working frequency points to farthest available frequency with a distance from adjacent cell frequency, and arranges itself Layer, sync grade be 0.Base station configuration information is sent to GW, wherein comprising layer, sync class information.

Step 3：GW receive base station send base station configuration information, according to GW storage base station synchronization layer class information and Information of adjacent cells, determines whether base station can be as layer, sync grade 0, if it is then replying confirmation；If another The layer, sync grade of individual adjacent cell is 0, then reply refusal information, and alternatively advise that layer, sync grade is set to 1 by base station.

Step 4：Base station receives the feedback information of GW, determines layer, sync grade.If the base station synchronization layer grade is set to 1, Synchronisation source is determined according to adjacent cell layer, sync level condition.

Embodiment three：GW specific base layer, sync grades（GW is directly specified）；

The firm access network in base station：

Step one：After base station completes access procedure, GW determines has new base station to access, and sends base station configuration information to base station, Wherein the layer, sync class information comprising base station, can also include needing synchronous information of adjacent cells；

Step 2：Base station receives the base station configuration information that GW sends, and configures itself according to layer, sync class information therein Layer, sync grade, and monitor adjacent cell layer, sync grade to determine synchronisation source.

Or,

Network design situation changes：

Step one：Network design changes, and GW determines the layer, sync grade for needing to change base station, sends base station to base station Reconfiguration information, wherein the layer, sync class information comprising base station, can also include needs synchronous information of adjacent cells；

Step 2：Base station receives the base station reconfiguration information that GW sends, according to layer, sync class information therein configuration certainly The layer, sync grade of body, and monitor adjacent cell layer, sync grade to determine synchronisation source.

Example IV：GW specific base layer, sync grades（AP is asked, and GW is directly specified）；

Step 2：Base station synchronization layer rating request information is sent to GW, wherein alternatively including the layer, sync of base station suggestion Grade（Differ and be set to 0）.

Step 3：GW determines the layer, sync grade of base station, sends base station configuration information to base station, wherein comprising the same of base station Step layer class information；

Step 4：Base station receives the base station configuration information that GW sends, and configures itself according to layer, sync class information therein Layer, sync grade, and monitor the layer, sync grade of adjacent cell to determine synchronisation source.

Embodiment five：GW is collected to adjacent base station and is fed back；

Step one：Synchronisation source is searched in base station 1, if searching synchronisation source, the layer, sync grade of itself is set to synchronisation source Layer, sync grade add 1, network monitoring is carried out to synchronisation source and realizes synchronous, layer, sync grade determination process terminates.If no Synchronisation source or no effective synchronisation source（Refer to that adjacent cell synchronisation source grade has been maxed out grade without effective synchronisation source）, perform Step 2.

Step 2：Base station 1 sends base station configuration information to GW, wherein comprising layer, sync class information.

Step 3：GW sends the base station configuration information of base station 1 to other base stations, wherein comprising layer, sync class information.Such as Really confirmation is replied in other base stations or GW does not receive the feedback of other base stations in time span T1, then execution step four； If refusal information is replied in base station, and the layer, sync grade of suggestion is alternatively carried, then execution step five.

Step 4：GW sends determination information to base station 1.

Step 5：GW sends refusal information to base station 1, and sends the layer, sync grade configuration of suggestion.

Step 6：Base station determines layer, sync grade, determines synchronisation source as needed.

Embodiment six：OAM is each base station separate configurations layer, sync grade；

The firm access networks of AP：

Step one：AP start after, report the positional information of oneself in OAM registration processes, OAM according to positional information, Substantially determine the adjacent base station around which（That is AP）Information, selects the elementary adjacent base station of layer, sync in adjacent base station, in configuration ginseng Selected adjacent base station and its layer, sync class information are sent to into AP in number.

Step 2：AP receives the base station configuration information that OAM sends, and monitors adjacent cell layer, sync grade to determine synchronisation source.

If synchronous success, returns to OAM and successfully indicate, OAM confirms the layer, sync grade of current AP according to the instruction（Together The layer, sync grade+1 in step source）And store；If synchronous unsuccessful, OAM continues according to positional information, in the neighbour of not selected mistake The elementary adjacent base station of layer, sync is selected in collection of base stations, and by selected adjacent base station and its layer, sync grade in configuration parameter Information is sent to AP, AP then repeat step two, until choosing suitable synchronisation source.

If still without suitable synchronisation source after attempting all adjacent base stations, selected base station is set in configuration information by OAM Oneself, layer, sync class information is set to sky, is sent to AP.AP is returned after confirming message, and the layer, sync grade of the AP is designated as by OAM 0。

Or,

Network design situation changes：

Step one：Network design changes, and OAM determines the layer, sync grade and positional information of change AP, it is determined that needing There is the AP for changing synchronization level, and to these AP send configuration information, wherein comprising AP layer, sync class informations；

Step 2：AP receives the configuration information that GW sends, and attempts monitoring adjacent cell according to layer, sync class information therein Layer, sync grade determines synchronisation source.

If synchronous success, returns to OAM and successfully indicate, OAM confirms the layer, sync grade of current AP according to the instruction（Together The layer, sync grade+1 in step source）And store；If unsuccessful, AP still keeps original synchronization level and sends to OAM keeping constant Indicate.

Referring to Fig. 7, the embodiment of the present invention provides a kind of base station, and the base station includes：

Setting unit 70, for, after effective synchronisation source is not searched, the layer, sync grade of the base station being set to most Low layer, sync grade；

Determining unit 71, for determining whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station；

First processing units 72, for when the determining unit determines and conflicts, resetting layer, sync of the base station etc. Level, and the adjacent base station for selecting to conflict is used as synchronisation source, realizes synchronous with the synchronisation source；

Second processing unit 73, it is for when the determining unit determines and do not conflict, the layer, sync grade of the base station is solid It is set to minimum layer, sync grade, so that adjacent base station is synchronized with the base station.

Further, the determining unit 71 is used for：

Determine whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station by searching for adjacent cell signal； Or,

The information of the layer, sync grade of the base station is sent to gateway device；The base is determined according to the feedback information of gateway device Whether the layer, sync grade stood is conflicted with the layer, sync grade of adjacent base station.

Further, the determining unit 71 is used for：

Adjacent cell signal is searched within the time of the first setting duration, if layer, sync grade is not searched for minimum layer, sync The signal of the co-frequency neighbor cell of grade, it is determined that the layer, sync grade of the base station is not conflicted with the layer, sync grade of adjacent base station；

Further, the determining unit 71 is used for：

If the feedback information of gateway device is confirmation, it is determined that the layer, sync grade of the base station is synchronous with adjacent base station Layer grade does not conflict, if the feedback information of gateway device is refusal information, it is determined that the layer, sync grade of the base station and adjacent base station Layer, sync grade conflict；

The confirmation be gateway device after the information of the layer, sync grade by the base station is sent to adjacent base station, receive The confirmation replied to adjacent base station or the information sent when setting and not receiving the reply of adjacent base station in duration；The refusal Information be gateway device after the information of the layer, sync grade by the base station is sent to adjacent base station, receive adjacent base station reply refuse The information sent during exhausted information.

Further, the first processing units 72 are used for：

During the information of the adjacent base station comprising conflict in the refusal information, the adjacent base station conduct indicated by the information is selected Synchronisation source；Or,

Further, the first processing units 72 are used for：

The layer, sync grade of the base station is re-set as into the layer, sync grade of a grade higher than minimum layer, sync grade.

Referring to Fig. 8, the embodiment of the present invention provides a kind of base station, and the base station includes：

Receiving unit 80, for receiving the configuration information comprising layer, sync grade of gateway device transmission；

Lock unit 81, for the layer, sync grade of itself is arranged according to the configuration information；If the layer, sync of the base station Grade is not minimum layer, sync grade, it is determined that synchronisation source, and is realized synchronous with the synchronisation source.

Further, the receiving unit 80 is used for：

After base station is linked into network, the configuration information comprising layer, sync grade of gateway device transmission is received；Or,

After effective synchronisation source is not searched, synchronization level request message is sent to gateway device；Receive gateway device The configuration information comprising layer, sync grade for returning.

Further, the base station also includes：

Updating block 82, for receiving the reconfiguration information that gateway device is sent after network design changes, should Comprising the layer, sync grade after updating in reconfiguration information；

The layer, sync grade of itself is reset according to the reconfiguration information；If the layer, sync of the base station after resetting Grade is not minimum layer, sync grade, then redefine synchronisation source, and realize synchronous with the synchronisation source.

Further, the lock unit 81 is used for：

According to the information of adjacent cells, when also information of adjacent cells is included in the configuration information, determine that layer, sync grade is minimum Adjacent cell be located base station, using determine base station as synchronisation source；Or,

Referring to Fig. 9, the embodiment of the present invention provides a kind of base station, and the base station includes：

Reporting unit 90, for the positional information of the base station is reported in the registration process to maintenance and management entity OAM；

Receiving unit 91, for receiving the configuration information of the layer, sync class information comprising adjacent base station of OAM returns；It is described Adjacent base station is the elementary adjacent base station of layer, sync of the base station that OAM is determined according to the positional information of the base station；

Lock unit 92, for according to the layer, sync class information of the adjacent base station search for synchronisation source, and with the synchronisation source Synchronize.

Further, the base station further includes：

Indicating member 93, in success synchronous with the synchronisation source, returning the information comprising the synchronisation source to OAM Synchronization successfully indicate；

In the synchronization failure with the synchronisation source, the synchronization failure for returning the information comprising the synchronisation source to OAM is indicated, And the configuration information of the layer, sync class information comprising the adjacent base station for redefining that OAM is returned to is received, according to again true The layer, sync class information of fixed adjacent base station re-searches for synchronisation source, and synchronizes with the synchronisation source for re-searching for.

Further, the base station further includes：

Updating block 94, for receiving the configuration information that OAM is resend after network design changes, this is sent out again Layer, sync class information comprising the adjacent base station for redefining in the configuration information for sending；According to the synchronization of the adjacent base station for redefining Layer class information re-searches for synchronisation source, and synchronizes with the synchronisation source for re-searching for；

If synchronization successfully, is returned to OAM and successfully indicated, and reset the layer, sync grade ratio of the base station re-searching for The high one-level of layer, sync grade of the synchronisation source for arriving；If synchronization failure, current layer, sync grade is kept, and sends same to OAM Step layer grade keeps constant instruction.

Referring to Figure 10, the embodiment of the present invention provides a kind of gateway device, and the gateway device includes：

Receiving unit 101, for receiving the information of the layer, sync grade of the base station of base station transmission；

Feedback unit 102, for determining whether the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station, and Feedback information is returned to base station according to determination result.

Further, the feedback unit 102 is used for：

If according to the synchronization stratum information and information of adjacent cells of all base stations of storage, determining the layer, sync grade of the base station not Conflict with the layer, sync grade of adjacent base station, then confirmation is returned to base station；If the layer, sync letter of all base stations according to storage Breath and information of adjacent cells, determine that the layer, sync grade of the base station is conflicted with the layer, sync grade of adjacent base station, then return to base station and refuse Exhausted information；Or,

The information of the layer, sync grade of the base station is sent to after adjacent base station, if receiving the confirmation of adjacent base station reply Or do not receive the reply of adjacent base station in setting duration, then confirmation is returned to base station；If receiving adjacent base station reply Refusal information, then return refusal information to base station.

Referring to Figure 11, the embodiment of the present invention provides a kind of gateway device, and the gateway device includes：

Determining unit 111, for determining the layer, sync grade of base station；

Transmitting element 112, for the configuration information comprising the layer, sync grade is sent to base station.

Further, the transmitting element 112 is used for：

After base station is linked into network, the configuration information comprising the layer, sync grade is sent to into base station；Or,

After the synchronization level request message sent when base station does not search effective synchronisation source is received, will be comprising described The configuration information of layer, sync grade is sent to base station.

Further, the gateway device also includes：

Unit 113 is reconfigured, and for reconfiguration information being sent to base station after network design changes, this reconfigures letter Comprising the layer, sync grade after updating in breath.

Referring to Figure 12, the embodiment of the present invention provides a kind of maintenance and management entity OAM, and the OAM includes：

Receiving unit 121, for receiving the positional information of the base station that base station is reported in registration process；

Dispensing unit 122, the elementary adjacent base of the layer, sync for the base station is determined according to the positional information of the base station Stand, and the configuration information of the layer, sync class information comprising the adjacent base station is sent to into the base station.

Further, the OAM also includes：

Processing unit 123, during for successfully indicating in the synchronization for receiving the information comprising synchronisation source that base station sends, root Successfully indicate to determine and store the layer, sync grade of the base station according to the synchronization；

In the synchronization failure instruction of the information comprising synchronisation source for receiving base station transmission, believed according to the position of the base station Breath redefines an adjacent base station of the base station, and by the layer, sync class information comprising the adjacent base station for redefining with confidence Breath is sent to the base station.

Further, the OAM also includes：

Unit 124 is reconfigured, for, after network design changes, this being redefined according to the positional information of the base station One adjacent base station of base station, and the configuration information of the layer, sync class information comprising the adjacent base station for redefining is sent to into the base Stand.

To sum up, beneficial effects of the present invention include：

The present invention is with reference to method according to embodiments of the present invention, equipment（System）, and computer program flow process Figure and/or block diagram are describing.It should be understood that can be by computer program instructions flowchart and/or each stream in block diagram The combination of journey and/or square frame and flow chart and/or flow process and/or square frame in block diagram.These computer programs can be provided The processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices The device of the function of specifying in present one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or multiple square frames.

These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory is produced to be included referring to Make the manufacture of device, the command device realize in one flow process of flow chart or one square frame of multiple flow processs and/or block diagram or The function of specifying in multiple square frames.

These computer program instructions can be also loaded in computer or other programmable data processing devices so that in meter Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented process, so as in computer or The instruction performed on other programmable devices is provided for realizing in one flow process of flow chart or multiple flow processs and/or block diagram one The step of function of specifying in individual square frame or multiple square frames.

, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to include excellent Select embodiment and fall into the had altered of the scope of the invention and change.

Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising these changes and modification.

Claims

1. a kind of method of base station synchronization, it is characterised in that the method includes：

Base station reports the positional information of the base station in the registration process to maintenance and management entity OAM；Receive the bag that OAM is returned The configuration information of the layer, sync class information containing adjacent base station；The adjacent base station is what OAM was determined according to the positional information of the base station The elementary adjacent base station of layer, sync of the base station；

2. the method for claim 1, it is characterised in that further include：

If B, the synchronization failure with the synchronisation source, the synchronization failure for returning the information comprising the synchronisation source to OAM is indicated, and The configuration information of the layer, sync class information comprising the adjacent base station for redefining that OAM is returned to is received, according to redefining The layer, sync class information of adjacent base station re-search for synchronisation source, and synchronize with the synchronisation source for re-searching for, return step Rapid A.

3. the method for claim 1, it is characterised in that further include：

Base station receives the configuration information that OAM is resend after network design changes, the configuration information for resending In comprising the layer, sync class information of adjacent base station for redefining；According to the layer, sync class information weight of the adjacent base station for redefining New search synchronisation source, and synchronize with the synchronisation source for re-searching for；

If synchronous success, returns to OAM and successfully indicates, and resets the layer, sync grade of the base station than re-searching for The high one-level of layer, sync grade of synchronisation source；If synchronization failure, current layer, sync grade is kept, and layer, sync is sent to OAM Grade keeps constant instruction.

4. a kind of synchronizing information feedback method, it is characterised in that the method includes：

Maintenance and management entity OAM receives the positional information of the base station that base station is reported in registration process；

OAM determines the elementary adjacent base station of the layer, sync of the base station according to the positional information of the base station, and will be comprising the adjacent base The configuration information of the layer, sync class information stood is sent to the base station.

5. method as claimed in claim 4, it is characterised in that after the configuration information is sent to base station by OAM, enter Step includes：

If the synchronization that OAM receives the information comprising synchronisation source of base station transmission is successfully indicated, successfully indicated according to the synchronization It is determined that and storing the layer, sync grade of the base station；

If the synchronization failure for receiving the information comprising synchronisation source of base station transmission indicates that OAM is believed according to the position of the base station Breath redefines an adjacent base station of the base station, and by the layer, sync class information comprising the adjacent base station for redefining with confidence Breath is sent to the base station.

6. method as claimed in claim 4, it is characterised in that after the configuration information is sent to base station by OAM, enter Step includes：

OAM redefines an adjacent base station of the base station according to the positional information of the base station after network design changes, and The configuration information of the layer, sync class information comprising the adjacent base station for redefining is sent to into the base station.

7. a kind of base station, it is characterised in that the base station includes：

Reporting unit, for the positional information of the base station is reported in the registration process to maintenance and management entity OAM；

Receiving unit, for receiving the configuration information of the layer, sync class information comprising adjacent base station of OAM returns；The adjacent base station The elementary adjacent base station of layer, sync of the base station determined according to the positional information of the base station for OAM；

Lock unit, for searching for synchronisation source according to the layer, sync class information of the adjacent base station, and is carried out together with the synchronisation source Step.

8. base station as claimed in claim 7, it is characterised in that the base station further includes：

Indicating member, in success synchronous with the synchronisation source, returning the synchronization of the information comprising the synchronisation source to OAM Successfully indicate；

In the synchronization failure with the synchronisation source, the synchronization failure for returning the information comprising the synchronisation source to OAM is indicated, and is connect The configuration information of the layer, sync class information comprising the adjacent base station for redefining that OAM is returned to is received, according to what is redefined The layer, sync class information of adjacent base station re-searches for synchronisation source, and synchronizes with the synchronisation source for re-searching for.

9. base station as claimed in claim 7, it is characterised in that the base station further includes：

Updating block, for receiving the configuration information that OAM is resend after network design changes, what this resend matches somebody with somebody Layer, sync class information comprising the adjacent base station for redefining in confidence breath；According to the layer, sync grade of the adjacent base station for redefining Information re-searches for synchronisation source, and synchronizes with the synchronisation source for re-searching for；

10. a kind of maintenance and management entity OAM, it is characterised in that the OAM includes：

Dispensing unit, the elementary adjacent base station of the layer, sync for the base station is determined according to the positional information of the base station, and will The configuration information of the layer, sync class information comprising the adjacent base station is sent to the base station.

11. OAM as claimed in claim 10, it is characterised in that the OAM also includes：

Processing unit, it is during for successfully indicating in the synchronization for receiving the information comprising synchronisation source that base station sends, same according to this Walk and successfully indicate to determine and store the layer, sync grade of the base station；

In the synchronization failure instruction of the information comprising synchronisation source for receiving base station transmission, according to the positional information weight of the base station Newly determine an adjacent base station of the base station, and the configuration information of the layer, sync class information comprising the adjacent base station for redefining is sent out Give the base station.

12. OAM as claimed in claim 10, it is characterised in that the OAM also includes：

Unit is reconfigured, for, after network design changes, the base station being redefined according to the positional information of the base station One adjacent base station, and the configuration information of the layer, sync class information comprising the adjacent base station for redefining is sent to into the base station.