CN104519506A - Method and device for self-optimization - Google Patents

Abstract

The invention discloses a method for self-optimization. The method comprises: firstly, a first base station notifying a second base station to divide or merging information; and then, the second base station performing load balancing or switching according to the acquired divided or merged information. The invention also discloses a plurality of other kinds of self-optimization methods and a corresponding self-optimization device. Through the method, different base stations supporting AAS and base stations supporting the AAS and not supporting the AAS can operate in a coordinative manner. The method supports load balancing, supports self-optimization of mobile robustness, and can prevent UE from wireless link failure or switching failure, and improves mobile communication system performance.

Description

The method and apparatus of self-optimizing

Technical field

The application relates to mobile communication system field, the method and apparatus of particularly self-optimizing.

Background technology

Along with the development of the communication technology, mobile communication system develops into System Architecture Evolution (SAE) system, and Fig. 1 gives the structural representation of existing SAE system.As shown in Figure 1, this system comprises evolved universal terrestrial radio access network (E-UTRAN) 101 and at least comprises the core network of mobile management entity (MME) 105 and user plane entity (S-GW) 106, E-UTRAN101 is for connecting subscriber equipment (UE) to core network, and E-UTRAN101 includes again more than one macro base station (eNB) 102 and base station from home (HeNB) 103, optionally comprise home base-station gateway (HeNB GW) 104, MME105 and S-GW106 can be integrated in a module and realize, and also can separate independent realization.Wherein, be connected to each other by X2 interface between eNB102, and be connected by S1 interface with MME105 and S-GW106 respectively; HeNB103 is directly connected with MME105 and S-GW106 respectively by S1 interface, or, be connected with optional HeNB GW104 by S1 interface, HeNB GW104 is connected with MME105 and S-GW106 respectively by S1 interface again.

Setting up the SAE system initial stage or in SAE system operation process, need the parameter spending a large amount of manpower and materials configuration optimization SAE systems, the particularly setting of wireless parameter, thus ensure the covering that SAE system is good and capacity, movement robustness, mobile time the equilibrium of load and the speed etc. that accesses of subscriber equipment.In order to save manpower and materials configuration spent in SAE system operation, at present, propose the self-organization method of SAE system.In self-optimizing process, be optimized process according to the setting of SAE system current state to eNB or HeNB in fact exactly, below eNB and HeNB be referred to as eNB, the self-organization method of SAE system is described.

Fig. 2 is the basic principle schematic of SAE system being carried out to self-optimizing, and as shown in Figure 2, eNB, after powering on or accessing SAE, can carry out self-configuring process, and this process comprises basic configuration and the initial wireless parameter configuration of eNB.Wherein, the basic configuration of eNB comprises Internet protocol (IP) address of configuration eNB and detects operation, maintenance and management (OA & M); Certification between eNB and core network; For being HeNB as eNB, also need the HeNB GW detected belonging to it; The download software of eNB and the parameter of operation carry out self configuration.Initial wireless parameter configuration is empirically or the Realization of Simulation, each eNB performance of SAE system can be subject to the environmental impact of region, so eNB needs the environment initial wireless parameter configuration according to region, specifically carry out the initial configuration of Neighboring Cell List and the initial configuration of load balancing.

After having carried out self-configuring process, a lot of parameters that eNB configures not have been optimized, in order to make SAE system have better performance, need to be optimized the configuration of eNB or to adjust, also referred to as the self-optimizing of mobile communication system.When being optimized the configuration of eNB or adjusting, can be completed by the OA & M control eNB on backstage, standardized interface can be had between OA & M and eNB, the parameter that OA & M will optimize sends to eNB(can be eNB or HeNB by this interface), then the parameter that self configures is optimized according to the parameter that will optimize by eNB.Certainly, also can be completed by eNB self, namely eNB detects and obtains wanting Optimal performance, carries out optimization or the adjustment of the corresponding parameter of self.The configuration of eNB is optimized or is adjusted and can comprise: the self-optimizing etc. of the self-optimizing of the self-optimizing of Neighboring Cell List, covering and capacity, the self-optimizing of mobile robustness, the self-optimizing of load balancing and Random Access Channel (RACH) parameter.

At present, the general principle of load balancing self-optimizing is: adjacent area exchanges load information and available resource information, when needs load balancing, cell-of-origin can switch the UE of its service to contiguous object community according to the available resource information of the measurement report of UE and adjacent area, and object community performs access control.When needs load balancing, its handover trigger to cell-of-origin of object cell change can be asked in cell-of-origin.

In version 12,3GPP further provides research under the scene of adaptive antenna system AAS, the need of and how network is carried out to the research project of self-configuring and self-optimizing.Agree to that self-configuring self-optimizing needs the three kinds of AAS scenes considered: beam forming (beam forming), the shaping cell shaping in community and cell splitting (spliting)/merging (merging).The problem of UE connection failure is discussed under the scene of cell splitting/merging.How to address these problems and how better to support under AAS scene that self-configuring self-optimizing does not also have rational solution.

Summary of the invention

In view of this, the present invention aims to provide the method and apparatus of several self-optimizing, to make between different base station to do load balancing according to the available resources of the position of UE, cell available resources and adjacent cell and configuring condition, use Radio Resource and system resource to greatest extent, the self-optimizing of better support mobility load balance, avoid Radio Link Failure, handoff failure and RRC reconstruction failure, lifting mobile communication system performance.

For achieving the above object, the technical scheme of the embodiment of the present invention is specifically achieved in that

The method of a kind of self-optimizing that the application provides, comprising:

First base station notifies the second base station division information or pooling information;

Load balancing or switching are carried out according to the described division information got or described pooling information in second base station.

Preferably, described division information comprises: the information dividing the new community produced, and the packets of information of described new community contains one or more information following: the time that before the Tracking Area Code TAC of the frequency information of the cell ID of new community, newly community, newly place, community, the information of the PLMN ID list of new Cell Broadcast CB, newly cell neighbor cell, the new community of division generation, cell ID, the newly community of former community can normally use;

Described pooling information comprises: the information merging Hou Xin community, and the packets of information of described new community is containing one or more information following: the time that the information of the cell ID of new community, the frequency information of new community, the TAC at new place, community, the PLMN ID list of new Cell Broadcast CB, new cell neighbor cell, the cell ID merging Qian Yuan community, new community can normally use.

Preferably, described second base station is carried out load balancing according to the division information got or pooling information and is comprised:

Receiving package is containing the resource status updating message for the local resource measurement result of new community, and the local resource measurement result according to described new community carries out load bridging.

Preferably, described second base station is carried out switching according to the division information got or pooling information and is comprised:

Configuration UE measures described new community;

Or send handover request message, comprise the information of one or more new community in described handover request message, wherein, the information of new community comprises: cell ID, keNB star, short medium education mark shortMAC-I.

A kind of self-optimizing equipment that the application provides, comprising: notification module and self-optimizing module, wherein:

Described notification module, for notifying division information or pooling information;

Described self-optimizing module, for carrying out load balancing or switching according to the division information got or pooling information.

The method of a kind of self-optimizing that the application provides, comprising:

First base station is by state information notification second base station of the ability information of the first base station and/or the first base station cell;

Second base station carries out load balancing or switching or performs energy saving according to the described state information got or described ability information.

Preferably, the ability information of described first base station comprises at least one of following information:

First base station or the first base station cell whether support AAS,

First base station or the first base station cell whether support beam forming,

First base station or the first base station cell whether support community shaping,

First base station or the first base station cell whether support cell splitting,

Whether the first base station or the first base station cell support cell combining.

Preferably, if cell splitting is supported in the first base station or the first base station cell, the method comprises further: the first base station by supported cell splitting configuration notification second base station, and by current service cell with by dividing or merge cell information report second base station that can support.

Preferably, describedly one or more information following are comprised by dividing or merge the cell information that can support:

The information of the TAC at the cell ID of community, the frequency information of community, place, community, the PLMN ID list of Cell Broadcast CB, cell neighbor cell, division or the time that the cell ID of former community, community can normally use before merging.

Preferably, the state information of described first base station cell comprises: described community is which kind of cell splitting state information that state of activation or community are in unactivated state or AAS state of activation or AAS unactivated state or AAS.

Preferably, described second base station is carried out load balancing according to the information got and is comprised:

Receiving package is containing the resource status updating message of the local resource measurement result of new community, or reception is in unactivated state and the local resource measurement result of the community that can be obtained by cell splitting, carries out load bridging according to described local resource measurement result; Wherein, the local resource measurement result of described new community comprises: the instruction of cell ID, hardware load, S1 transport layer TNL load instruction, Radio Resource instruction, comprehensive active volume group and ABS state;

Or the base station corresponding according to described information request performs AAS cell splitting.

Preferably, described second base station is carried out switching according to the information got and is comprised:

Configuration UE is measured described new community or is done and switches prepare more, and in the handover request message sent, comprise the information of new community, wherein, the information of new community comprises: cell ID, keNB star, short medium education mark shortMAC-I.

A kind of self-optimizing equipment that the application provides, comprising: notification module and self-optimizing module, wherein:

Described notification module, for the state information of the ability information and/or this equipment community that notify this equipment;

Described self-optimizing module, gets described state information for basis or ability information carries out load balancing or switching or perform energy saving.

The method of a kind of self-optimizing that the application provides, comprising:

Base station when carrying out adaptive antenna system AAS operation, for the UE being in connection status generates UE context in new community;

Base station receives the request of RRC connection reconstruction in described community, connects, and send RRC connection reconstruction message for UE sets up RRC.

Preferably, described base station operates Shi Xin community and generates UE context and comprise carrying out AAS:

When base station determines to carry out cell splitting to its control community, produce UE context to the new community after cleaving of the UE in the front community of division;

Or, when base station determines to carry out cell combining to its control community, produce UE context to the UE new community after merging merged in front community;

Wherein, described UE context comprises the PCI of shortMAC-I, KeNB star and/or cell-of-origin, UE place.

Preferably, the C-RNTI of UE in new community is comprised further in described UE context.

Preferably, base station can complete cell splitting or merging within the time of the clock T311 of community, produce in the contextual operation of the UE of new community when carrying out AAS operation described in performing.

A kind of self-optimizing equipment that the application provides, comprising: context management module and connection management module, wherein:

Described context management module is that the UE being in connection status generates UE context in new community during for carrying out AAS operation at this equipment;

Described connection management module, for receiving the RRC connection reconstruction request of UE in described community, connects for UE sets up RRC, and sends RRC connection reconstruction message.

The method of a kind of self-optimizing that the application provides, comprising:

First base station determines to carry out cell splitting or merging, and the first base station notifies the second base station division information or pooling information;

Second base station will be initiated to the handoff procedure of other communities or send reconstruction information to the first base station by the UE dividing or merge in community being switched to.

Preferably, the first base station is divided or pooling information by UE association signaling or UE dereferenced signaling second base station.

Preferably, if associate signaling by UE, the reason that described signaling comprises handoff failure is cell splitting or merging; If by UE dereferenced signaling, the state that described signaling comprises community is: the state of AAS cell splitting or merging community or unactivated state.

Preferably, described reconstruction information comprises all divisions or merges the cell information of the new community produced, and described cell information comprises cell ID, KeNB star, shortMAC-I.

A kind of self-optimizing equipment that the application provides, comprising: notification module and self-optimizing module, wherein:

After this equipment receives the handover request message from other base stations, and when determining carry out cell splitting or merge before the handoff completion message not receiving UE, described notification module, for notifying division or pooling information;

Described self-optimizing module, for will be initiated to the handoff procedure of other communities or send reconstruction information to the base station of correspondence by the UE dividing or merge in community being switched to.

The method of a kind of self-optimizing that the application provides, comprising:

Cell splitting or merging is carried out when first base station receives the handover request message from the second base station, or after the first base station receives the handover request message from the second base station, cell splitting or merging are carried out in decision, first base station sends to switch and prepares failed message to the second base station, and the failure cause wherein comprised is cell splitting or merging;

Second base station will be initiated to the handoff procedure of other communities or send reconstruction information to the first base station by the UE dividing or merge in community being switched to.

Preferably, described switching prepares to comprise division information or pooling information further in failed message.

Preferably, described division information or pooling information can send to base station 2 by UE dereferenced signaling.

A kind of self-optimizing equipment that the application provides, comprising: notification module and self-optimizing module, wherein:

After this equipment receives the handover request message from other base stations, when determining carry out cell splitting or merge, described notification module, prepare failed message to other base stations described for sending to switch, the failure cause wherein comprised is cell splitting or merging;

Described self-optimizing module, for will be initiated to the handoff procedure of other communities or send reconstruction information to the base station of correspondence by the UE dividing or merge in community being switched to.

In sum, several self-optimization techniques scheme provided by the present invention, make to support between the different base station of AAS and support AAS and do not support AAS base station between can co-ordination, holding load is balanced, support the self-optimizing of mobile robustness, and avoid UE that Radio Link Failure or handoff failure occur, improve performance of mobile communication system.

Accompanying drawing explanation

Fig. 1 is the structural representation of existing SAE system;

Fig. 2 is existing basic principle schematic of SAE system being carried out to self-optimizing;

Fig. 3 is the workflow diagram that the present invention supports the method one of self-optimizing under AAS scene;

Fig. 4 is the workflow diagram that the present invention supports the method two of self-optimizing under AAS scene;

Fig. 5 is the workflow diagram that the present invention supports the method three of self-optimizing under AAS scene;

Fig. 6 is the workflow diagram that the present invention supports the method four of self-optimizing under AAS scene;

Fig. 7 is the workflow diagram that the present invention supports the method five of self-optimizing under AAS scene;

Fig. 8 is the composition structural representation of the better self-optimizing equipment of the present invention first;

Fig. 9 is the composition structural representation of the better self-optimizing equipment of the present invention second.

Embodiment

For making the object of the application, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the application is described in further detail.

Fig. 3 is the workflow diagram that the present invention supports the method one of self-optimizing under AAS scene.As shown in Figure 3, this flow process comprises:

Step 301, base station 1 informing base station 2 divides information or pooling information.

When base station 1 will divide/merge community, or behind division/merging community, to other base stations notice division information or pooling information.

For the community that will divide, described division information or pooling information comprise: the information of the new community that division produces, and the packets of information of new community is containing one or more information following:

The cell ID (can be PCI and/or ECGI) of-Xin community;

The frequency information of-Xin community;

The Tracking Area Code (TAC) at place ,-Xin community;

The PLMN ID list of-Xin Cell Broadcast CB;

The information of-Xin cell neighbor cell;

The cell ID of former community before the new community of-division generation.The relation of new community and former community can be known by this cell ID;

The time that-Xin community can normally use.The described time can be absolute time, also can be relative time, and represent that base station 2 receives and can start timer after the message of base station 1, how long Hou Xin community can normally use.This time also can represent that former community cannot use after which time.The information that former community cannot use after which time also can be included in the service cell information of former community.

Former community is known because cell splitting will no longer can be used according to the relation of former community before new community and division in base station 2.Or the state that base station 1 clearly comprises former community by the message of described informing base station 2 is that cell splitting or cell splitting are carrying out or AAS, or base station 1 is included in the service cell information that will delete in the message Zhong Jiangyuan community of described informing base station 2, such base station 2 knows that this former community will no longer can be used.

For the community that will merge, described division information or pooling information comprise: the information merging Hou Xin community, and the packets of information of new community is containing one or more information following:

The cell ID (can be PCI and/or ECGI) of-Xin community;

The frequency information of-Xin community;

The Tracking Area Code (TAC) at place ,-Xin community;

The PLMN ID list of-Xin Cell Broadcast CB;

The information of-Xin cell neighbor cell;

The cell ID of-merging Qian Yuan community.Can be known by these cell IDs and merge rear community and the relation merging Qian Yuan community;

The time that-Xin community can normally use.The described time can be absolute time, also can be relative time, can start timer according to this relative time, represents that base station 2 receives and can normally use from community after how long merging afterwards after the message of base station 1.This time also can represent that merging Qian Yuan community cannot use after which time.The information that merging Qian Yuan community cannot use after which time also can be included in the service cell information merging Qian Yuan community.

Former community is known because cell combining will no longer can be used according to the relation merging rear community and merging Qian Yuan community in base station 2.Or base station 1 by the state that the message of described informing base station 2 clearly comprises former community be cell combining or or cell splitting carrying out or AAS, or base station 1 is included in the service cell information that will delete in the message Zhong Jiangyuan community of described informing base station 2, such base station 2 knows that this former community will no longer can be used.

Base station 1 can by eNB configuration update message by above-mentioned message notice base station 2.

Step 302, base station 2 determines how to carry out load balancing or how to initiate base station 2 to community, base station 1 to the switching of UE according to the information received.

Base station 2 can the measurement of configuration UE.Community such as before division is community 1, division Hou Shi community 2 and community 3.If the adjacent cell of the community 10 under base station 2 comprises community 1, such base station 2 can the measurement of UE under allocating cell 10, and the adjacent cell of measurement comprises multiple new community (such as community 2 and community 3).Guarantee like this to switch UE in time to community 2 or community 3, avoid failure or the handoff failure of wireless link, avoid UE to get back to idle pulley.When configuration UE is measured, the temporal information received from base station 1 can be considered in base station 2, and the time that can normally use according to new community decides the measurement of when configuration UE.

Base station 2 can the measurement of configuration UE.Such as, community before merging is community 2 and community 3, merges Hou Shi community 1.If the adjacent cell of the community 10 under base station 2 comprises a Ge Xin community (such as community 2), such base station 2 can the measurement of UE under allocating cell 10, and the adjacent cell of measurement comprises community 1.Guarantee like this to switch UE in time to community 1, avoid failure or the handoff failure of wireless link, avoid UE to get back to idle pulley.When configuration UE is measured, the temporal information received from base station 1 can be considered in base station 2, and the time that can normally use according to new community decides the measurement of when configuration UE.

Base station 2 can be done and be switched many preparations (Multiple handovers preparation, re-establishmentinformation).Community such as before division is community 1, division Hou Shi community 2 and community 3.If the adjacent cell of the community 10 under base station 2 comprises community 1, such base station 2, when determining to initiate to UE to the switching of community 1, can be done and switch many preparations.Namely the information comprising multiple new community (such as community 2 and community 3) is sent in the handover request message of base station 1 in base station 2, the packets of information of community 2 and community 3 identifies (shortMAC-I) containing the cell ID of community 2 and community 3, keNB star (identical in concrete meaning and computational methods and 3GPP specification TS36.331 and TS33.401, to repeat no more), short medium education here.Ensure like this to split in the process of community 2 and community 3 in community 1, if community 1 becomes unavailable, UE can rebuild successfully in community 2 or community 3, and UE can access community 2 or community 3 in time, avoid failure or the handoff failure of wireless link, avoid UE to get back to idle pulley.When doing the many preparations of switching, the temporal information received from base station 1 can be considered in base station 2, determines whether and when perform the UE switched switching prepare according to new community (can by dividing or merge the community produced) time that can normally use more.

Base station 2 can be done and be switched prepare more.Such as, community before merging is community 2 and community 3, merges Hou Shi community 1.If the adjacent cell of the community 10 under base station 2 comprises community 2, such base station 2, when determining to initiate to UE to the switching of community 2, can be done and switch many preparations.Namely the information comprising a community (such as community 1) in the handover request message of base station 1 is sent in base station 2, the packets of information of community 1, containing identical in the cell ID of community 1, keNB star(concrete meaning and computational methods and 3GPP specification TS36.331 and TS33.401, repeats no more here), shortMAC-I.Ensure like this to be merged in the process of community 1 in community 2 and community 3, if community 2 becomes unavailable, UE can rebuild successfully in community 1, and UE can access community 1 in time, avoids failure or the handoff failure of wireless link, avoids UE to get back to idle pulley.When doing the many preparations of switching, the temporal information received from base station 1 can be considered in base station 2, determines whether and when perform the UE switched switching prepare according to new community (can by dividing or merge the community produced) time that can normally use more.

The situation of community 2 and community 3 will be split into for community 1, if base station 2 requests the situation that community 1 resource is reported in base station 1, base station 1 receives request, and so, base station 1 comprises the local resource measurement result of community 2 and community 3 when sending resource status updating message.The local resource measurement result of described community 2 and community 3 can comprise cell ID, hardware load instruction, S1 transport layer TNL load instruction, Radio Resource instruction, comprehensive active volume group and ABS state.The information that community 1 divides is known by the notice of above-mentioned base station 1 in base station 2, reports as normal report, because alternative cell 1 is wanted in community 2 and community 3, so the load condition of community 2 and community 3 is also valuable to base station 2 so this is looked in base station 2.Can carry out in time when being sick for community, base station 1 shunting offload like this in base station 2, avoid again initiating resource request process, avoid original resource request process outstanding (pending) at that, resource can not be made because of the disappearance of community 1 to report and shunt to perform in time.

The situation of community 1 will be merged into for community 2 and community 3, if base station 2 requests the situation that community 2 or community 3 resource are reported in base station 1, base station 1 receives request, and so, base station 1 comprises the local resource measurement result of community 1 when sending resource status updating message.The local resource measurement result of described community 1 can comprise cell ID, hardware load instruction, S1 transport layer TNL load instruction, Radio Resource instruction, comprehensive active volume group and ABS state.By the notice of above-mentioned base station 1, base station 2 knows that community 2 and community 3 are merged into the information of community 1, report as normal report, because alternative cell 2 and community 3 are wanted in community 1, so the load condition of community 1 is also valuable to base station 2 so this is looked in base station 2.Be sick in base station 2 like this when offload is shunted in base station 2 or community 3 and can carry out in time, avoid again initiating resource request process, avoid original resource request process to be suspended in that, will resource be made because of the disappearance of community 2 or community 3 to report and shunting cannot perform in time.

Message between described base station 1 and base station 2 can be sent by X2 interface or is sent by core net S1 message.

So far, the workflow of self-organization method one under AAS scene of the present invention is namely completed.Pass through the method, base station can be made to know the state of neighbor base station community in time, better utilize system resource and Radio Resource, more effectively carry out mobility load balance self-optimizing, better arrange and measure and switch, avoid Radio Link Failure or handoff failure or Radio Resource to connect (RRC) reconstruction failure.

Fig. 4 is the workflow diagram that the present invention supports the method two of self-optimizing under AAS scene.As shown in Figure 4, this flow process comprises:

Step 401, the state information of base station 1 informing base station 2 base station 1 ability information and/or community, base station 1.

Described base station 1 ability information comprises at least one of following information:

Base station 1 or community, base station 1 whether support AAS ability information,

Base station 1 or community, base station 1 whether support beam forming,

Base station 1 or community, base station 1 whether support community shaping,

Base station 1 or community, base station 1 whether support cell splitting,

Whether base station 1 or community, base station 1 support cell combining.

When cell splitting is supported in base station 1 or community, base station 1, base station 1 can also informing base station 2 cell splitting which supports configure, and such as support splits into the information of 2 communities or 3 communities.Send in base station 1 in the message of base station 2 and also comprise current service cell information and by dividing or merge the cell information that can support.Such as current service cell is community 1, when needs, community 1 can split into community 2 and community 3, like this in described message except comprising the information of community 1 as except the information of Serving cell, community 2 and community 3 information as Serving cell can also be comprised, the state of community 2 and community 3 is inactive state (not active), can become movable (active) state by AAS division.The relation (namely community 2 and community 3 can be produced by the division of community 1) of community 2 and community 3 and community 1 can also be comprised in described message.The information of community 2 and community 3 can be included in the sub-information as Serving cell 1 in the information of Serving cell 1, identify this relation.Also can comprise the mark of community 1 in the information of community 2 and community 3, represent to be divided by which community (i.e. community 1) and produce.Current service cell is community 2 and community 3 for another example, when needs, community 2 and community 3 can be merged into community 1, like this in described message except comprising the information of community 2 and community 3 as except the information of Serving cell, also comprise the information of community 1 as Serving cell, the state of community 1 is inactive state (not active), can be merged become movable (active) state by AAS.Can also comprise in described message community 1 and community 2 and community 3 relation (namely community 1 can pass through community 2 and community 3 merge produce).In the information of community 1, also can comprise the cell ID of community 2 and community 3, represent and can be produced by which cell combining.

Describedly comprise one or more information following by dividing or merge the cell information that can support:

The cell ID (can be PCI and/or ECGI) of-community;

The frequency information of-community;

The Tracking Area Code (TAC) at place ,-community;

The PLMN ID list of-Cell Broadcast CB;

The information of-cell neighbor cell;

The cell ID of former community before-division/merging.The relation of new community and former community can be known by this cell ID; For situation about merging, the cell ID of former community can be multiple;

The time that-community can normally use, such as 1 o'clock to 3 o'clock afternoon.

It is the information that state of activation or community are in which kind of cell splitting state of unactivated state or AAS state of activation or AAS unactivated state or AAS that the state information of its small area comprises community.Which kind of cell splitting state of described AAS such as community 1 can split into Liang Ge community or 3 communities, is in now the state splitting into 2 communities.

Request message or the above-mentioned information of eNB configuration update message informing base station 2 can be set up by X2 in base station 1.Base station 2 can set up response message by X2 or eNB configuration update message sends the above-mentioned information of base station 2 to base station 1.

When aforementioned capabilities or the update of district status of base station 1, base station 1 can send above-mentioned information to base station 2 with eNB configuration update message.If new configuration just starts normal use after a certain time, the then base station 1 informing base station 2 normal time used, the described time can be absolute time, also can be relative time, and after a period of time after expression base station 2 receives described message, new configuration starts normal use.

Step 402, base station 2 determines how to make load balancing or how to initiate base station 2 to perform energy saving to community, base station 1 to the switching of UE or decision according to the state information received or described ability information.

When the state of 1 time community, base station changes, base station 2 can the measurement of configuration UE.Community such as before division is community 1, division Hou Shi community 2 and community 3.If the adjacent cell of the community 10 under base station 2 comprises community 1, such base station 2 can the measurement of UE under allocating cell 10, and the adjacent cell of measurement comprises community 2 and community 3.Guarantee like this to be switched to community 2 or community 3 in time, avoid failure or the handoff failure of wireless link, avoid UE to get back to idle pulley.When configuration UE is measured, the temporal information received from base station 1 can be considered in base station 2, and the time that can normally use according to new community decides the measurement of when configuration UE.

When the state of 1 time community, base station changes, base station 2 can the measurement of configuration UE.Such as, community before merging is community 2 and community 3, merges Hou Shi community 1.If the adjacent cell of the community 10 under base station 2 comprises community 2, such base station 2 can the measurement of UE under allocating cell 10, and the adjacent cell of measurement comprises community 1.Guarantee like this to be switched to community 1 in time, avoid failure or the handoff failure of wireless link, avoid UE to get back to idle pulley.When configuration UE is measured, the temporal information received from base station 1 can be considered in base station 2, and the time that can normally use according to new community decides the measurement of when configuration UE.

Base station 2 can be done and be switched prepare more.Community such as before division is community 1, division Hou Shi community 2 and community 3.If the adjacent cell of the community 10 under base station 2 comprises community 1, such base station 2, when determining to initiate to UE to the switching of community 1, can be done and switch many preparations.Namely the information comprising community 2 and community 3 in the handover request message of base station 1 is sent in base station 2.The information of community 2 and community 3 can be included in the reconstruction information of handover request.The packets of information of community 2 and community 3, containing identical in cell ID, keNB star(concrete meaning and computational methods and 3GPP specification TS36.331 and TS33.401, repeats no more here), shortMAC-I.Ensure like this to split in the process of community 2 and community 3 in community 1, if community 1 becomes unavailable, UE can rebuild successfully in community 2 or community 3, and UE can access community 2 or community 3 in time, avoid failure or the handoff failure of wireless link, avoid UE to get back to idle pulley.When doing the many preparations of switching, the temporal information received from base station 1 can be considered in base station 2, determines whether and when perform the UE switched switching prepare according to new community (can by dividing or merge the community produced) time that can normally use more.

Base station 2 can be done and be switched prepare more.Such as, community before merging is community 2 and community 3, merges Hou Shi community 1.If the adjacent cell of the community 10 under base station 2 comprises community 2, such base station 2, when determining to initiate to UE to the switching of community 2, can be done and switch many preparations.Namely the information comprising community 1 in the handover request message of base station 1 is sent in base station 2.The information of community 1 can be included in the reconstruction information of handover request.The packets of information of community 1, containing identical in the cell ID of community 1, keNB star(concrete meaning and computational methods and 3GPP specification TS36.331 and TS33.401, repeats no more here), shortMAC-I.Ensure like this to be merged in the process of community 1 in community 2 and community 3, if community 2 becomes unavailable, UE can rebuild successfully in community 1, and UE can access community 1 in time, avoids failure or the handoff failure of wireless link, avoids UE to get back to idle pulley.When doing the many preparations of switching, the temporal information received from base station 1 can be considered in base station 2, determines whether according to the time that new community can normally use and when performs the many preparations of switching to the UE switched.

The situation of community 2 and community 3 will be split into for community 1, if base station 2 requests the situation that community 1 resource is reported in base station 1, base station 1 receives request, and so, base station 1 can comprise the local resource measurement result of community 2 and community 3 when sending resource status updating message.The local resource measurement result of described community 2 and community 3 can comprise cell ID, hardware load instruction, S1 transport layer TNL load instruction, Radio Resource instruction, comprehensive active volume group and ABS state.The information that community 1 divides is known by the notice of above-mentioned base station 1 in base station 2, reports as normal report, because alternative cell 1 is wanted in community 2 and community 3, so the load condition of community 2 and community 3 is also valuable to base station 2 so this is looked in base station 2.Can carry out in time when being sick for community, base station 1 shunting offload like this in base station 2, avoid again initiating resource request process, avoid original resource request process to be suspended in that, resource can not be made because of the disappearance of community 1 to report and shunt to perform in time.

The situation of community 1 will be merged into for community 2 and community 3, if base station 2 requests the situation that community 2 or community 3 resource are reported in base station 1, base station 1 receives request, and so, base station 1 can comprise the local resource measurement result of community 1 when sending resource status updating message.The local resource measurement result of described community 1 can comprise cell ID, hardware load instruction, S1 transport layer TNL load instruction, Radio Resource instruction, comprehensive active volume group and ABS state.By the notice of above-mentioned base station 1, base station 2 knows that community 2 and community 3 are merged into the information of community 1, report as normal report, because alternative cell 2 and community 3 are wanted in community 1, so the load condition of community 1 is also valuable to base station 2 so this is looked in base station 2.Be sick in base station 2 like this when offload is shunted in base station 2 or community 3 and can carry out in time, avoid again initiating resource request process, avoid original resource request process to be suspended in that, will resource be made because of the disappearance of community 2 or community 3 to report and shunting cannot perform in time.

But the resource situation being in now the unactivated state community that can be gone out by certain cell splitting, when sending resource status request message to base station 1, can be asked in base station 2.If base station 1 receives request, base station 1 comprises the resource local resource measurement result of the community that can be produced by cell splitting when sending resource status and upgrading.Described local resource measurement result comprises cell ID, hardware load instruction, S1 transport layer TNL load instruction, Radio Resource instruction, comprehensive active volume group and ABS state etc.

Need to when the Shunt Load of base station 1 in base station 2, base station 2 can send message to base station 1, and request base station 1 performs AAS cell splitting.Base station 2 can need the traffic carrying capacity of shunting to decide request base station 1 according to the resource status of the ability information of the base station 1 received and/or community, base station 1 and/or base station 2 to perform AAS cell splitting.Particularly report process according to the resource between base station 1 and base station 2, community, base station 1 is when existing available resources are not enough, and such operation has very large effect for effective load balancing.The AAS operative configuration that base station 2 can also be supported according to base station 1, how request base station 1 does AAS operation, such as, be divided into 2 communities or 3 communities.Base station 1 can perform corresponding operation after the cell splitting request receiving base station 2.Base station 2 can also the message notice of the resource needed to base station 1, and the situation of the resource that such base station 1 needs according to base station 2 performs corresponding AAS and operates, such as, split into Liang Ge community or three communities.Such scheme is particularly useful under the environment of heterogeneous network (hetnet), such as, have the basic macrocell covered, and has (pico) community slightly.AAS function is supported in pico community, and covering leak can not be brought when performing the operation of AAS in pico community, so pico community according to the demand of basic coverage cell Shunt Load, can perform AAS operation.

Need to when the Shunt Load of base station 1 in base station 2, base station 2 can send message to base station 1, and request base station 1 performs community shaping.Base station 2 can need the traffic carrying capacity of shunting to decide request base station 1 according to the resource status of the ability information of the base station 1 received and/or community, base station 1 and/or base station 2 to perform community shaping.Base station 2 is reported according to the measurement of UE or community shaping is to that direction in the community, position requests base station 1 of UE.

In order to save energy, base station 1 can be in closedown (switch off or deactivation) state.Base station 2 is when asking community, base station 1 to open (switch on), community, base station 1 can be asked in which type of mode to open, such as open community 1 or open community 2 and community 3(supposes that community 1 can split into community 2 and community 3 here), base station 2 can need the traffic carrying capacity shunted to base station 1 and resource requirement to determine how request base station 1 opens according to it.

Message between described base station 1 and base station 2 can be sent by X2 interface or is sent by core net S1 message.

So far, the workflow of self-organization method two under AAS scene of the present invention is namely completed.Pass through the method, base station can be made to know the state of neighbor base station community in time, better utilize system resource and Radio Resource, more effectively carry out mobility load balance self-optimizing, better arrange and measure and switch, avoid Radio Link Failure or handoff failure or RRC reconstruction failure, pass through the method, can better and energy save and combine, better ensure the capacity of network.

Fig. 5 is the workflow diagram that the present invention supports the method three of self-optimizing under AAS scene.As shown in Figure 5, this flow process comprises:

Step 501, base station when carrying out adaptive antenna system (AAS) and operating, for the UE being in connection status generates UE context in new community.

Specifically, base station can produce the UE context in new community in the case where there:

Base station determines that controlling community to it carries out cell splitting, and such as community 1 splits into community 2 and community 3.Base station produces UE context to the UE in community 1 in community 2 and community 3, and described UE context comprises the PCI of shortMAC-I, KeNB star, cell-of-origin, UE place, can also comprise the C-RNTI of UE in community 1.The community such as community 2 or community 3 at this UE context place are also known in base station.If the UE of service can not walk by successful switch in such community 1, the UE that connection failure occurs in community 1 divides can ensure that it rebuilds successfully in community 2 or community 3, makes UE not get back to idle pulley.

Base station determines that controlling community to it carries out cell combining, and such as community 2 and community 3 are merged into community 1.The UE that base station is served to community 2 produces UE context in community 1, and the UE that base station is served to community 3 produces UE context in community 1.Described UE context comprises the PCI of shortMAC-I, KeNB star, cell-of-origin, UE place, can also comprise the C-RNTI of UE in community 2 or community 3.The such as community 1, community at this UE context place is also known in base station.If the UE of service can not walk by successful switch in such community 2 or community 3, the UE that connection failure occurs in the process that community 2 and community 3 merge can ensure that it rebuilds successfully in community 1, makes UE not get back to idle pulley.

Base station receives the handover request message sent from another base station or MME, and described handoff request message is containing the PCI of cell-of-origin.According to method two, if another base station knows that described base station supports that AAS function is supported in certain community of AAS function or described base station, another base station initiate to UE to described base station or arrive the switching of community of described base station time, the cell ID PCI of cell-of-origin can be comprised all the time.If the object community switched is community 1, community 1 is splitting into community 2 and community 3, and so, object base station produces the UE context of UE in community 2 and community 3.Described UE context comprises the PCI of shortMAC-I, KeNB star, cell-of-origin, UE place, can also comprise the C-RNTI of UE in community 2 or community 3.The community such as community 2 or community 3 at this UE context place are also known in base station.If described like this UE handoff failure, can rebuild successfully in community 2 and community 3, make UE not get back to idle pulley.If the object community switched is community 2, community 2 and community 3 are being merged into community 1, and so, object base station produces the UE context of UE in community 1.Described UE context comprises the PCI of shortMAC-I, KeNB star, cell-of-origin, UE place, can also comprise the C-RNTI of UE in community 1.The such as community 1, community at this UE context place is also known in base station.If described like this UE handoff failure, can rebuild successfully in community 1, UE is made not get back to idle pulley.

Base station UE context produced in new community when carrying out AAS operation can carry out according to the configuration of operation and maintenance (O & M), also independently can be determined to perform by base station.Base station just performs when carrying out AAS operation, the UE context produced in new community can complete cell splitting or merging within the time of the clock T311 of this community.Base station also can be considered cell splitting or merge the time needed when supporting the community of AAS operation to arrange T311 clock, make T311 be longer than the time of AAS action need.Time of described AAS action need refers to and from base station, to perform cell splitting to the time of dividing the community that and can normally use.

Step 502, base station receives the RRC connection reconstruction request of UE in described community, connect, and send RRC connection reconstruction message to UE for UE sets up RRC.

So far, the workflow of self-organization method three under AAS scene of the present invention is namely completed.By the method, Radio Link Failure or handoff failure or RRC reconstruction failure can be avoided, better ensure the capacity of network, improve user satisfaction.

Fig. 6 is the workflow diagram that the present invention supports the method four of self-optimizing under AAS scene.As shown in Figure 6, this flow process comprises:

Step 601, base station 1 determines to carry out cell splitting or merging, the division information of community, informing base station 2 base station 1, base station 1 or pooling information.Wherein, the message between base station 1 and base station 2 can be sent by X2 interface or is sent by core net S1 message.

Wherein base station 2 is neighbor base stations of base station 1.The community that base station 2 controls is the adjacent area that base station 1 controls community.When base station 1 determines cell splitting or merges, may receive the handover request message of the switching UE from base station 2, but also not receive the handoff completion message from described UE.

Base station 1 can associate division information or the pooling information of (associated) signaling or community, base station 1, UE dereferenced signaling base station 2 by UE.If associate signaling by UE, the reason that described signaling can comprise handoff failure is cell splitting or merging; If by UE dereferenced signaling, the state that described signaling can comprise community is: AAS cell splitting or merge cell status or unactivated state.If UE dereferenced signaling, division information or the pooling information of community, informing base station 2 base station 1 can be carried out by eNB configuration update message.

Described division information or pooling information also comprise division information described in step 301 or pooling information, repeat no more here.

Step 602, base station 2 will be initiated to the handoff procedure of other communities or send reconstruction information to base station 1 by the UE dividing or merge in community being switched to.Base station 2 have sent handover request message to base station 1(if S1 switches, then for switching demand and handover request message according to it), but also do not receive resource release message or UE context release command message knows that the switching of UE does not also complete.Wherein, the message between base station 1 and base station 2 can be sent by X2 interface or is sent by core net S1 message.

UE can be initiated to division or the switching merging the new community produced in base station 2.Community, base station 1 is done to the situation of cell splitting, comprise the cell information of all divisions in the reconstruction information that base station 2 comprises in switching demand or handover request message, described cell information comprises cell ID, KeNB star, shortMAC-I.Can ensure no matter UE in which division community rebuilds, and can rebuild successfully like this.Base station 2 can calculate KeNB star according to the cell ID, cell frequency etc. of the new community that the division received from step 601 or merging produce.The calculating of shortMAC-I and KeNB star is same as the prior art, and the present invention repeats no more.

Base station 2 also can send reconstruction information to base station 1, and described reconstruction information comprises all divisions or merges the cell information of the new community produced, and described cell information comprises cell ID, KeNB star, shortMAC-I.Can ensure no matter UE in which division community rebuilds, and can rebuild successfully like this.Base station 2 can calculate KeNB star according to the cell ID, cell frequency etc. of the new community that the division received from step 601 or merging produce.The calculating of shortMAC-I and KeNB star is same as the prior art, and the present invention repeats no more.

So far, the workflow of self-organization method four under AAS scene of the present invention is namely completed.By the method, Radio Link Failure or handoff failure or RRC reconstruction failure can be avoided, better ensure the capacity of network, improve user satisfaction.

Fig. 7 is the workflow diagram that the present invention supports the method five of self-optimizing under AAS scene.As shown in Figure 7, this flow process comprises:

Step 701, cell splitting or merging is carried out when base station 1 receives the handover request message from base station 2, or base station 1 decides to do cell splitting or merging after receiving the handover request message from base station 2, base station 1 sends to switch and prepares failed message to base station 2.Described switching is prepared failed message and can be sent by X2 interface or sent by core net S1 message.

The failure cause that described switching prepares unsuccessfully to comprise is cell splitting or merging.

Described switching prepares unsuccessfully can also comprise division information or pooling information.Described division information or pooling information identical with step 301, repeat no more here.

Base station 1 can by UE dereferenced signaling such as eNB config update transmission cell splitting information or pooling information to base station 2.Described division information or pooling information identical with step 301, repeat no more here.

Step 702 is identical with step 602, repeats no more here.Base station 2 prepares unsuccessfully to know that cell splitting or merging are carried out in object community according to switching, and divide information or pooling information, or base station 2 prepares unsuccessfully to know that cell splitting is carried out in object community according to switching, and know division information or pooling information according to UE dereferenced signaling, thus base station 2 performs the operation of step 602.

So far, the workflow of self-organization method five under AAS scene of the present invention is namely completed.By the method, Radio Link Failure or handoff failure or RRC reconstruction failure can be avoided, better ensure the capacity of network, improve user satisfaction.

Corresponding to the method one of self-optimizing shown in Fig. 3, the invention provides a kind of self-optimizing equipment as shown in Figure 8, this equipment comprises notification module and self-optimizing module, wherein:

Described notification module, for notifying division information or pooling information;

Described self-optimizing module, for carrying out load balancing or switching according to the division information got or pooling information.

Corresponding to the method two of self-optimizing shown in Fig. 4, present invention provides a kind of self-optimizing equipment, the composition structure of this equipment is identical with the equipment of self-optimizing shown in Fig. 8, also comprises notification module and self-optimizing module, wherein:

Described notification module, for the state information of the ability information and/or this equipment community that notify this equipment;

Described self-optimizing module, saves for carrying out load balancing or switching according to the state information got or ability information or performing energy.

Corresponding to the method three of self-optimizing shown in Fig. 5, the invention provides a kind of self-optimizing equipment as shown in Figure 9, this equipment comprises: context management module and connection management module, wherein:

Described context management module is that the UE being in connection status generates UE context in new community during for carrying out AAS operation at this equipment;

Described connection management module, for receiving the RRC connection reconstruction request of UE in described community, connects for UE sets up RRC, and sends RRC connection reconstruction message.

Corresponding to the method four of self-optimizing shown in Fig. 6, present invention provides a kind of self-optimizing equipment, the composition structure of this equipment is identical with the equipment of self-optimizing shown in Fig. 8, also comprises notification module and self-optimizing module, wherein:

After this equipment receives the handover request message from other base stations, and when determining carry out cell splitting or merge before the handoff completion message not receiving UE, described notification module, for notifying division or pooling information;

Described self-optimizing module, for will be initiated to the handoff procedure of other communities or send reconstruction information to the base station of correspondence by the UE dividing or merge in community being switched to.

Corresponding to the method five of self-optimizing shown in Fig. 7, present invention provides a kind of self-optimizing equipment, the composition structure of this equipment is identical with the equipment of self-optimizing shown in Fig. 8, also comprises notification module and self-optimizing module, wherein:

After this equipment receives the handover request message from other base stations, when determining carry out cell splitting or merge, described notification module, prepare failed message to other base stations described for sending to switch, the failure cause wherein comprised is cell splitting or merging;

Described self-optimizing module, for will be initiated to the handoff procedure of other communities or send reconstruction information to the base station of correspondence by the UE dividing or merge in community being switched to.

As seen from the above technical solution, self-optimization techniques scheme provided by the present invention, make support AAS different base station between and support AAS and do not support AAS base station between co-ordination, holding load is balanced, support the self-optimizing of mobile robustness, UE is avoided Radio Link Failure or handoff failure to occur, lifting mobile communication system performance.

The foregoing is only the preferred embodiment of the application, not in order to limit the application, within all spirit in the application and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the application protects.

Claims (27)

1. a method for self-optimizing, is characterized in that, comprising:

First base station notifies the second base station division information or pooling information;

Load balancing or switching are carried out according to the described division information got or described pooling information in second base station.

2. method according to claim 1, is characterized in that:

Described division information comprises: the information dividing the new community produced, and the packets of information of described new community contains one or more information following: the time that before the Tracking Area Code TAC of the frequency information of the cell ID of new community, newly community, newly place, community, the information of the PLMN ID list of new Cell Broadcast CB, newly cell neighbor cell, the new community of division generation, cell ID, the newly community of former community can normally use;

Described pooling information comprises: the information merging Hou Xin community, and the packets of information of described new community is containing one or more information following: the time that the information of the cell ID of new community, the frequency information of new community, the TAC at new place, community, the PLMN ID list of new Cell Broadcast CB, new cell neighbor cell, the cell ID merging Qian Yuan community, new community can normally use.

3. method according to claim 2, is characterized in that, described second base station is carried out load balancing according to the division information got or pooling information and comprised:

Receiving package is containing the resource status updating message for the local resource measurement result of new community, and the local resource measurement result according to described new community carries out load bridging.

4. method according to claim 2, is characterized in that, described second base station is carried out switching according to the division information got or pooling information and comprised:

Configuration UE measures described new community;

Or send handover request message, comprise the information of one or more new community in described handover request message, wherein, the information of new community comprises: cell ID, keNB star, short medium education mark shortMAC-I.

5. a self-optimizing equipment, is characterized in that, comprising: notification module and self-optimizing module, wherein:

Described notification module, for notifying division information or pooling information;

Described self-optimizing module, for carrying out load balancing or switching according to the division information got or pooling information.

6. a method for self-optimizing, is characterized in that, comprising:

First base station is by state information notification second base station of the ability information of the first base station and/or the first base station cell;

Second base station carries out load balancing or switching or performs energy saving according to the described state information got or described ability information.

7. method according to claim 6, is characterized in that, the ability information of described first base station comprises at least one of following information:

First base station or the first base station cell whether support AAS,

First base station or the first base station cell whether support beam forming,

First base station or the first base station cell whether support community shaping,

First base station or the first base station cell whether support cell splitting,

Whether the first base station or the first base station cell support cell combining.

8. method according to claim 7, is characterized in that:

If cell splitting is supported in the first base station or the first base station cell, the method comprises further: the first base station by supported cell splitting configuration notification second base station, and by current service cell with by dividing or merge cell information report second base station that can support.

9. method according to claim 8, is characterized in that:

Describedly comprise one or more information following by dividing or merge the cell information that can support:

The information of the TAC at the cell ID of community, the frequency information of community, place, community, the PLMN ID list of Cell Broadcast CB, cell neighbor cell, division or the time that the cell ID of former community, community can normally use before merging.

10. method according to claim 6, is characterized in that:

The state information of described first base station cell comprises: described community is which kind of cell splitting state information that state of activation or community are in unactivated state or AAS state of activation or AAS unactivated state or AAS.

Method described in 11. any one of according to Claim 8 to 10, it is characterized in that, described second base station is carried out load balancing according to the information got and is comprised:

Receiving package is containing the resource status updating message of the local resource measurement result of new community, or reception is in unactivated state and the local resource measurement result of the community that can be obtained by cell splitting, carries out load bridging according to described local resource measurement result; Wherein, the local resource measurement result of described new community comprises: the instruction of cell ID, hardware load, S1 transport layer TNL load instruction, Radio Resource instruction, comprehensive active volume group and ABS state;

Or the base station corresponding according to described information request performs AAS cell splitting.

12. methods according to claim 8, is characterized in that, described second base station is carried out switching according to the information got and comprised:

Configuration UE is measured described new community or is done and switches prepare more, and in the handover request message sent, comprise the information of new community, wherein, the information of new community comprises: cell ID, keNB star, short medium education mark shortMAC-I.

13. 1 kinds of self-optimizing equipment, is characterized in that, comprising: notification module and self-optimizing module, wherein:

Described notification module, for the state information of the ability information and/or this equipment community that notify this equipment;

Described self-optimizing module, gets described state information for basis or ability information carries out load balancing or switching or perform energy saving.

The method of 14. 1 kinds of self-optimizings, is characterized in that, comprising:

Base station when carrying out adaptive antenna system AAS operation, for the UE being in connection status generates UE context in new community;

Base station receives the request of RRC connection reconstruction in described community, connects, and send RRC connection reconstruction message for UE sets up RRC.

15. methods according to claim 14, is characterized in that, described base station operates Shi Xin community and generates UE context and comprise carrying out AAS:

When base station determines to carry out cell splitting to its control community, produce UE context to the new community after cleaving of the UE in the front community of division;

Or, when base station determines to carry out cell combining to its control community, produce UE context to the UE new community after merging merged in front community;

Wherein, described UE context comprises the PCI of shortMAC-I, KeNB star and/or cell-of-origin, UE place.

16. methods according to claim 15, is characterized in that:

The C-RNTI of UE in new community is comprised further in described UE context.

17., according to claim 14 to the method described in 16 any one, is characterized in that:

Base station can complete cell splitting or merging within the time of the clock T311 of community, produce in the contextual operation of the UE of new community when carrying out AAS operation described in performing.

18. 1 kinds of self-optimizing equipment, is characterized in that, comprising: context management module and connection management module, wherein:

Described context management module is that the UE being in connection status generates UE context in new community during for carrying out AAS operation at this equipment;

Described connection management module, for receiving the RRC connection reconstruction request of UE in described community, connects for UE sets up RRC, and sends RRC connection reconstruction message.

The method of 19. 1 kinds of self-optimizings, is characterized in that, comprising:

First base station determines to carry out cell splitting or merging, and the first base station notifies the second base station division information or pooling information;

Second base station will be initiated to the handoff procedure of other communities or send reconstruction information to the first base station by the UE dividing or merge in community being switched to.

20. methods according to claim 19, is characterized in that:

First base station associates signaling by UE or UE dereferenced signaling second base station divides or pooling information.

21. methods according to claim 20, is characterized in that:

If associate signaling by UE, the reason that described signaling comprises handoff failure is cell splitting or merging; If by UE dereferenced signaling, the state that described signaling comprises community is: the state of AAS cell splitting or merging community or unactivated state.

22., according to claim 19 to the method described in 21 any one, is characterized in that:

Described reconstruction information comprises all divisions or merges the cell information of the new community produced, and described cell information comprises cell ID, KeNB star, shortMAC-I.

23. 1 kinds of self-optimizing equipment, is characterized in that, comprising: notification module and self-optimizing module, wherein:

After this equipment receives the handover request message from other base stations, and when determining carry out cell splitting or merge before the handoff completion message not receiving UE, described notification module, for notifying division or pooling information;

Described self-optimizing module, for will be initiated to the handoff procedure of other communities or send reconstruction information to the base station of correspondence by the UE dividing or merge in community being switched to.

The method of 24. 1 kinds of self-optimizings, is characterized in that, comprising:

Cell splitting or merging is carried out when first base station receives the handover request message from the second base station, or after the first base station receives the handover request message from the second base station, cell splitting or merging are carried out in decision, first base station sends to switch and prepares failed message to the second base station, and the failure cause wherein comprised is cell splitting or merging;

Second base station will be initiated to the handoff procedure of other communities or send reconstruction information to the first base station by the UE dividing or merge in community being switched to.

25. methods according to claim 24, is characterized in that:

Described switching prepares to comprise division information or pooling information further in failed message.

26. methods according to claim 24, is characterized in that: described division information or pooling information can send to base station 2 by UE dereferenced signaling.

27. 1 kinds of self-optimizing equipment, is characterized in that, comprising: notification module and self-optimizing module, wherein:

After this equipment receives the handover request message from other base stations, when determining carry out cell splitting or merge, described notification module, prepare failed message to other base stations described for sending to switch, the failure cause wherein comprised is cell splitting or merging;

Described self-optimizing module, for will be initiated to the handoff procedure of other communities or send reconstruction information to the base station of correspondence by the UE dividing or merge in community being switched to.