CN106028470B

CN106028470B - A kind of method for realizing radio resource control connection reestablishment and small base station cluster controller

Info

Publication number: CN106028470B
Application number: CN201610617822.3A
Authority: CN
Inventors: 付永魁
Original assignee: Wuhan Hongxin Telecommunication Technologies Co Ltd
Current assignee: CICT Mobile Communication Technology Co Ltd
Priority date: 2016-07-29
Filing date: 2016-07-29
Publication date: 2019-07-09
Anticipated expiration: 2036-07-29
Also published as: CN106028470A

Abstract

The present invention proposes a kind of method for realizing radio resource control connection reestablishment and small base station cluster controller.A method of it realizing radio resource control connection reestablishment, is applied to small base station cluster controller, comprising: receive the solicited message for the acquisition user terminal context that the small base station of target is sent, and be transmitted to the equipment where source cell；Equipment where reception source cell is according to the response message for causing the signaling process of user terminal radio resource control connection reestablishment to return；When response message is success response information, the small base station of target is forwarded that information to, the small base station of target is made to execute radio resource control connection reestablishment；It when response message is failure response information, sends acquisition user terminal context failure response information and gives target small base station, make the small base station refusal radio resource control connection reestablishment of target.Technical solution of the present invention is suitable for small base station cluster system, and the signaling process for leading to user terminal radio resource control connection reestablishment is fully considered in reconstruction process, and reconstruction process is more reliable.

Description

A kind of method for realizing radio resource control connection reestablishment and small base station cluster controller

Technical field

The present invention relates to wireless communication technology field more particularly to a kind of methods for realizing radio resource control connection reestablishment And small base station cluster controller.

Background technique

In a wireless communication system, when user terminal is attached to network, the idle wireless resource with base station is initially set up Control connection, subsequent base station establish the client correlation S1 signaling connection to core net, have got through user terminal and core net in this way Between signaling channel.When user terminal, which is lost, to be wirelessly connected with serving cell, radio resource control connection reestablishment can be initiated, is come Restore Radio Link.

The method of radio resource control connection reestablishment is in the prior art: user terminal activates business in the cell of source base station Later, wireless heterogeneous networks connection is sent to the target BS in the Target cell under target BS when meeting certain condition Reconstruction request message, target BS determine source base station according to the information in the radio resource control connection reestablishment request message, and The contextual information of the user terminal is obtained from source base station, establishes Radio Link for the user terminal, and then is completed subsequent wireless Resources control connection reestablishment procedure.Since the networking of small base station cluster system and traditional base station system is had any different, the reconstruction Method is not suitable for small base station cluster system, and in the method for reconstructing, does not support to rebuild wireless heterogeneous networks when user terminal is in When the signaling procedure of connection, source base station still returns to user terminal contextual information, and target BS is wirelessly provided using the information Source control connection reconstruction just will fail, and reduce the efficiency that target BS carries out radio resource control connection reestablishment on the whole.

Summary of the invention

In order to make up above-mentioned defect in the prior art and deficiency, the present invention proposes a kind of realization wireless heterogeneous networks connection The method of reconstruction and small base station cluster controller are suitable for small base station cluster system, and in radio resource control connection reestablishment process In fully considered signaling procedure locating for user terminal.

A method of it realizing radio resource control connection reestablishment, is applied to small base station cluster controller, this method comprises:

The solicited message for the acquisition user terminal context that the small base station of target is sent is received, carries user in the solicited message The identification information at end and the source cell information where user terminal；

The solicited message for obtaining user terminal context is transmitted to the equipment where source cell and starts timing；

Equipment where receiving the source cell is according to the signaling for leading to user terminal radio resource control connection reestablishment Process and when the response message returned, stop timing and simultaneously the response message be analyzed and processed；

When the response message is to obtain user terminal context success response information, by the acquisition user terminal context Success response information is transmitted to the small base station of the target, and the small base station of the target is made to execute radio resource control connection reestablishment；

When the response message is to obtain user terminal context failure response information, sends and obtain the mistake of user terminal context Response message is lost to the small base station of the target, makes the small base station refusal radio resource control connection reestablishment request of the target；

When timing reaches the duration of setting, refuse the acquisition user terminal context request.

Preferably, after the solicited message for receiving the acquisition user terminal context that the small base station of target is sent, the side Method further include:

When the small base station cluster controller cannot successfully identify the identification information of the user terminal carried in the solicited message When with source cell information where user terminal, is determined according to the solicited message for obtaining user terminal context and save the user Hold the source cell equipment of relevant information；Wherein, the source cell equipment includes: small base station cluster controller, or can with it is described small The base station equipment of base station cluster controller interconnection；

Judge whether the condition of radio resource control connection reestablishment meets；

When the condition of the radio resource control connection reestablishment meets, the source cell Xiang Suoshu equipment, which is sent, obtains the use Family end context request information, and start timing；

When receiving the source cell equipment according to causing the signaling process of user terminal radio resource control connection reestablishment to return When the response message returned, stops timing and the response message is analyzed and processed；

It, will be on the acquisition user terminal when the response message is to obtain the user terminal context success response information Hereafter success response information is transmitted to the small base station of the target, and the small base station of the target is made to execute wireless heterogeneous networks connection weight It builds；

It, will be on the acquisition user terminal when the response message is to obtain the user terminal context failure response information Hereafter failure response information is transmitted to the small base station of the target, makes the small base station refusal radio resource control connection reestablishment of the target Request；

When timing reaches the duration of setting, returns and obtain user terminal context failure response.

Preferably, whether the condition for judging radio resource control connection reestablishment meets, comprising:

Judge whether the source cell of radio resource control connection reestablishment and purpose cell meet neighboring BS relationship, judge the source Whether whether cell and purpose cell, which meet to meet between mutual switching condition, and judgement and the source cell equipment, is built The condition of vertical communication link；Wherein:

When above-mentioned condition meets simultaneously, the condition of the radio resource control connection reestablishment meets, the source cell Xiang Suoshu Equipment, which is sent, obtains the user terminal context request information, and starts timing.

Preferably, described send to the source cell equipment obtains the user terminal context request information, comprising:

It whether there is communication link between judgement and the source cell equipment；

Communication link if it exists is then sent to the source cell equipment by the communication link and obtains the user terminal or more Literary solicited message；

Communication link if it does not exist is then established communication link by upper level Network Management Equipment or equipment of the core network, and is passed through The communication link of foundation sends to the source cell equipment and obtains the user terminal context request information.

Preferably, the equipment received where the source cell is according to leading to user terminal wireless heterogeneous networks connection weight The signaling process built and the response message returned, comprising:

It receives and is in hand off signaling flow state before radio resource control connection reestablishment when user terminal, or in not When can again lead to the non-switching signaling process state of radio resource control connection reestablishment, what the equipment where source cell returned is taken Acquisition user terminal context success response information with user terminal contextual information；

It receives to be in front of radio resource control connection reestablishment when user terminal and can again lead to wireless heterogeneous networks company When connecing the non-switching signaling process state of reconstruction, the acquisition user terminal context failure response that the equipment where source cell returns is believed Breath.

A kind of small base station cluster controller, comprising:

Receiving unit, for receiving the solicited message for the acquisition user terminal context that the small base station of target is sent, the request The identification information for carrying user terminal in information and the source cell information where user terminal；

Information process unit, for the solicited message for obtaining user terminal context to be transmitted to setting where source cell It is standby and start timing；

Preferably, the small base station cluster controller further include:

Analytical unit, for cannot successfully identify the mark of the user terminal carried in the solicited message when the receiving unit When knowing information and source cell information where user terminal, is determined according to the solicited message for obtaining user terminal context and save institute State the source cell equipment of user terminal relevant information；Wherein, the source cell equipment includes: small base station cluster controller, or can be with The base station equipment of the small base station cluster controller interconnection；

Judging unit, for judging whether the condition of radio resource control connection reestablishment meets；

Timing processing unit, when for judging that the condition of radio resource control connection reestablishment meets when the judging unit, It is sent to the source cell equipment and obtains the user terminal context request information, and start timing；

Preferably, when the judging unit judges whether the condition of radio resource control connection reestablishment meets, it is specifically used for:

Preferably, the timing processing unit is sent to the source cell equipment obtains the user terminal context request letter When breath, it is specifically used for:

Preferably, information process unit receives the equipment where the source cell according to leading to user terminal wireless heterogeneous networks The signaling process of connection reconstruction and when the response message returned, be specifically used for:

It receives and is in hand off signaling flow state before radio resource control connection reestablishment when user terminal, or being in will not When again leading to the non-switching signaling process state of radio resource control connection reestablishment, the carrying of the equipment return where source cell The acquisition user terminal context success response information of user terminal contextual information；

It receives to be in front of radio resource control connection reestablishment when user terminal and can again lead to wireless heterogeneous networks connection When the non-switching signaling process state rebuild, the acquisition user terminal context failure response that the equipment where source cell returns is believed Breath.

The method proposed by the present invention for realizing radio resource control connection reestablishment, is applied to small base station cluster controller, first The solicited message for the acquisition user terminal context that the small base station of target is sent is received, and the solicited message is transmitted to source cell institute Equipment；Then the equipment where the source cell is received according to the signaling for leading to user terminal radio resource control connection reestablishment The response message that process returns；When the response message is to obtain user terminal context success response information, by the acquisition User terminal contextual information is transmitted to the small base station of the target, and the small base station of the target is made to execute wireless heterogeneous networks connection weight It builds；When the response message is to obtain user terminal context failure response information, sends acquisition user terminal context and unsuccessfully ring It answers information to the small base station of the target, makes the small base station refusal radio resource control connection reestablishment request of the target.Skill of the present invention Art scheme is cooperated by small base station cluster controller, small base station and user terminal and is completed, and is suitable for small base station cluster system, and realize in scheme In the process, having fully considered when the equipment response where source cell obtains user terminal context request leads to user terminal radio resource The signaling process for controlling connection reconstruction, improves the efficiency of radio resource control connection reestablishment.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis The attached drawing of offer obtains other attached drawings.

Fig. 1 is a kind of process signal of method for realizing radio resource control connection reestablishment disclosed by the embodiments of the present invention Figure；

Fig. 2 is a kind of small base station cluster system structural schematic diagram provided in an embodiment of the present invention；

Fig. 3 is that a kind of the another of method for realizing radio resource control connection reestablishment disclosed by the embodiments of the present invention is realized The flow diagram of mode；

Fig. 4 is that small base station cluster controller disclosed by the embodiments of the present invention is sent on the acquisition user terminal to source cell equipment The hereafter flow diagram of solicited message；

Fig. 5 is a kind of flow diagram of method for establishing communication link disclosed by the embodiments of the present invention；

Fig. 6 is the process signal of another method for realizing radio resource control connection reestablishment disclosed by the embodiments of the present invention Figure；

Fig. 7 is that the another kind of another method for realizing radio resource control connection reestablishment disclosed by the embodiments of the present invention is real The flow diagram of existing mode；

Fig. 8 is a kind of structural schematic diagram of small base station cluster controller disclosed by the embodiments of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

The embodiment of the invention discloses a kind of methods for realizing radio resource control connection reestablishment, are applied to small base station cluster control Device processed, it is shown in Figure 1, this method comprises:

S101, the solicited message for obtaining user terminal context that the small base station of target is sent is received, is taken in the solicited message Source cell information where identification information and user terminal with user terminal；

Specifically, user terminal and small base station cluster controller are subordinated to small base station cluster system as shown in Figure 2.It is shown in Fig. 2 Small base station cluster system in, positioned at some cluster the small base station LTE AP of all integrations pass through small base station cluster controller SCC (Small Cell Cluster Controller) core network access and equipment network management OMC (Operation and Maintenance Center, operation and maintenance center), wherein core net as shown in the figure can be mobile management nodes MME (Mobility Management Entity) or gateway SWG (Serving GateWay) or PDN Gateway PWG (PDN GateWay).Direct interface is not present between small base station in SCC control range, but by SCC centralized control；Small base station and phase X2 interface is not present between adjacent macro base station, i.e., cannot directly be communicated between small base station and adjacent macro base station, but be born by SCC Duty and macro base station interface are simultaneously communicated；In addition, the small base station between different clusters is also required to interact by SCC.

Wireless heterogeneous networks connection failure, Radio Link Failure, handover failure, integrality has occurred when user terminal detects The either case for verifying failure, the cell that a signal can be selected good are initiated radio resource control connection reestablishment request, that is, are initiated The request of RRC connection reconstruction.The solicited message is sent to small base station LTE AP belonging to the cell, the i.e. small base station of target.Target is small Base station finds that itself does not store the contextual information of user terminal, cannot complete radio resource control connection reestablishment, then to small Base station cluster controller, which is sent, obtains user terminal context request information.

S102, the solicited message for obtaining user terminal context is transmitted to the equipment where source cell and starts to count When；

Specifically, passing through after small base station cluster controller SCC receives the acquisition user terminal context request information The user terminal identification information and source cell information obtained in user terminal context request information can determine that the user terminal is being initiated It is located at which cell before radio resource control connection reestablishment request and is connect with which small base station, that is, determines the user terminal institute Equipment where the source cell at place and the source cell being connect with the user terminal, and the acquisition user terminal context request is believed It ceases the equipment where being sent to the source cell and starts timing.

S103, the equipment where receiving the source cell are according to leading to user terminal radio resource control connection reestablishment Signaling process and when the response message returned, stop timing and simultaneously the response message be analyzed and processed；

Specifically, the user terminal contextual information is carried in the acquisition user terminal context success response information, it is small Base station cluster controller forwards that information to the small base station of target, then the small base station of target can therefrom obtain the user terminal or more Text, context and the user terminal complete radio resource control connection reestablishment according to the user end.

S104, when timing reaches the duration of setting, refuse the acquisition user terminal context request.

It should be noted that after small base station cluster controller forwards and obtains user terminal context request information, itself meeting Starting obtains user terminal context timer and starts timing, terminates until obtaining user terminal context response information until receiving Timing.If the equipment where source cell is after receiving acquisition user terminal context request information without issuing any response letter Breath, then the acquisition user terminal context timer of small base station cluster controller can timing always, until timing time-out, at this time small base station Cluster controller refuses the acquisition user terminal context request.

The method for the realization radio resource control connection reestablishment that the present embodiment proposes, is applied to small base station cluster controller, first The solicited message for the acquisition user terminal context that the small base station of target is sent first is received, and the solicited message is transmitted to source cell The equipment at place；Then the equipment where the source cell is received according to the letter for leading to user terminal radio resource control connection reestablishment The response message for enabling process return；When the response message is to obtain user terminal context success response information, obtained described It takes user terminal context success response information to be transmitted to the small base station of the target, the small base station of the target is made to execute radio resource control System connection re-establishes；When the response message is to obtain user terminal context failure response information, returns and obtain user terminal Context failure response.Technical solution of the present invention is cooperated by small base station cluster controller, small base station and user terminal and is completed, and is suitable for small Base station cluster system, and during scheme is realized, the equipment response where source cell obtains abundant when user terminal context request The signaling process for leading to user terminal radio resource control connection reestablishment is considered, the effect of radio resource control connection reestablishment is improved Rate.

Optionally, in another embodiment of the present invention, shown in Figure 3, it is described to receive what the small base station of target was sent After the solicited message for obtaining user terminal context, the method also includes:

S301, the mark of the user terminal carried in the solicited message cannot be successfully identified when the small base station cluster controller When source cell information where information and user terminal, determined according to the solicited message for obtaining user terminal context described in saving The source cell equipment of user terminal relevant information；Wherein, the source cell equipment includes: small base station cluster controller, or can be with institute State the base station equipment of small base station cluster controller interconnection；

Specifically, the small base station cluster controller for managing the small base station can be protected for all user terminals connecting with small base station Deposit the identification information of these user terminals and the source cell information where user terminal and other relevant informations.When small base station cluster controller When receiving acquisition user terminal context request information, initiation radio resource control connection reestablishment can be identified from the information The identification information of the user terminal of request and the source cell information where user terminal.If small base station cluster controller finds that itself is stored User terminal relevant information in there is no the relevant informations of the user terminal comprising initiating radio resource control connection reestablishment, then can be with Conclude, there is no the contextual informations of the user terminal in self-administered numerous small base stations, i.e., the user terminal is outside cluster. At this moment, small base station cluster controller determines the use by the cell PCI that carries in the radio resource control connection reestablishment request that receives Source cell where the end of family may further determine that the source cell equipment where the user terminal by the source cell.In the source In cell equipment, the in store user terminal relevant information.Wherein, the source cell equipment is the small base station cluster control where source cell Device processed or base station equipment with the small same producer of base station cluster controller (can communicate with one another with the small base station).

S302, judge whether the condition of radio resource control connection reestablishment meets；

Specifically, continuing to execute step S303 when radio resource control connection reestablishment condition meets；When radio resource control When connection reconstruction condition processed is unsatisfactory for, small base station cluster controller refusal radio resource control connection reestablishment request.

S303, when the condition of the radio resource control connection reestablishment meets, the source cell Xiang Suoshu equipment send obtain The user terminal context request information, and start timing；

Specifically, when small base station cluster controller receives the acquisition user terminal context request that the small base station of target is sent After information, analysis processing is not done to the acquisition user terminal context request information, when above-mentioned wireless heterogeneous networks connect When reconstruction condition meets, the acquisition user terminal context request information is sent to source cell and set by small base station cluster controller It is standby, and start timing.

S304, when receiving the source cell equipment according to the signaling flow for leading to user terminal radio resource control connection reestablishment When the response message that journey returns, stops timing and the response message is analyzed and processed；

Specifically, judging nothing first when source cell equipment receives the acquisition user terminal context request information Whether the condition of line resources control connection reconstruction meets, that is, judges source cell and the purpose cell of radio resource control connection reestablishment Whether meet neighboring BS relationship, judge the source cell and purpose cell whether meet can mutual switching condition, and judgement with It sends and whether meets the item for establishing communication link between the small base station cluster controller for obtaining the user terminal context request information Part, only when above-mentioned condition meets simultaneously, source cell equipment just agrees to radio resource control connection reestablishment, and otherwise refusal is wireless Resources control connection reconstruction.

It should be noted that if being unsatisfactory for neighboring BS relationship between the source cell and purpose cell, but the source is small RrcReestablishmentWithoutNeighborActive between area and purpose cell, which is switched, to be opened, then source cell is set It is standby also to think to meet neighboring BS relationship between the source cell and purpose cell.

The source cell equipment is believed according to leading to the signaling process returning response of user terminal radio resource control connection reestablishment The method of breath are as follows:

(1) when the user terminal is in hand off signaling process

If the user terminal, there are X2 switching, source cell equipment, which is cancelled switching and sending, obtains the user terminal context Success response information includes the contextual information of the user terminal in the success response information；

It should be noted that for the user terminal for attempting progress radio resource control connection reestablishment, when it has switching letter When enabling process, and switching source cell and purpose cell PCI having the same (can be with frequency point difference), wireless heterogeneous networks connection weight Small base station cluster controller where the purpose cell (and above-mentioned two cell is all different) built is small to the source where the two cells Area's equipment, which is all sent, obtains context request information.At this point, the source cell equipment where switching purpose cell does not send any sound Information is answered, the only source cell equipment where switching source cell sends response message.Doing so ensure that causes wirelessly in switching Under resources control connection reconstruction and all identical abnormal conditions of switching source/destination cell PCI, radio resource control connection reestablishment Reliability.

(2) when the user terminal is in non-switching signaling procedure

Need to consider three kinds of possibilities at this time:

(2.1) radio resource control connection reestablishment will not be again led to after radio resource control connection reestablishment, then sends and obtain User terminal context success response message is taken, carries user terminal context in the message；

For example, if the ongoing signaling procedure of the user terminal is wireless heterogeneous networks connection reconfiguration, and the nothing Line resources control connection reconfiguration be by TTI binding activation/deactivation or non-default measuring configuration or secondary cell management, or it is logical It crosses PRACH distribution SR and is subsequently found step-out or transmission mode change and triggers, then cancel the process, and send acquisition and use Family end context success response information；

(2.2) radio resource control connection reestablishment may be again led to after radio resource control connection reestablishment, then sends and obtain Take user terminal context failure response information；

For example, if the ongoing signaling procedure of the user terminal are as follows: the RRC connection weight of ERAB management process triggering Match or RRC connection reconstruction triggering RRC connection reconfiguration or switching within cell triggering RRC connection reconfiguration, switching within cell The reason of non-TTI binding or user terminal capability query, then source cell equipment, which is sent, obtains user terminal context failure response letter Breath；

(2.3) whether radio resource control connection reestablishment can occur again after radio resource control connection reestablishment can not be pre- Know, does not then send any response message.

(3) when the user terminal is in other signaling procedures, any response message is not sent.

S305, when timing reach setting duration when, return obtain user terminal context failure response.

Specifically, when source cell equipment detects the contextual information or described for itself not storing the user terminal There are other signaling procedures, then any responses of source cell equipment not loopback for user terminal.In this case, small base station cluster controller meeting Timing always, until timing reaches setting duration, at this moment small base station cluster controller does not continue to wait, but directly returns and obtain User terminal context failure response.

Optionally, in another embodiment of the present invention, the condition of the judgement radio resource control connection reestablishment is No satisfaction, comprising:

Optionally, in another embodiment of the present invention, described send to the source cell equipment obtains the user Context request information is held, it is shown in Figure 4, comprising:

It whether there is communication link between S401, judgement and the source cell equipment；

S402, if it exists communication link are then sent to the source cell equipment by the communication link and obtain the user Hold context request information；

S403, if it does not exist communication link then establish communication link by upper level Network Management Equipment or equipment of the core network, and It is sent by the communication link of foundation to the source cell equipment and obtains the user terminal context request information.

Specifically, the process for establishing communication link, referring to Fig. 5, comprising:

S501, the relevant information that the source cell equipment is obtained from the acquisition user terminal context request；

Specifically, the relevant information of the source cell equipment includes: global eNB ID of source cell equipment etc..

S502, according to the relevant information of the source cell equipment, built by mobile management nodes and the source cell equipment Vertical communication link.

Specifically, the communication link between small base station cluster controller and source cell equipment is X2 link.Base station cluster small first Controller obtains the X2 link carrying information of source cell equipment from mobile management nodes, then initiates X2 to mobile management nodes Request for building link, mobile management nodes respond the request, establish X2 link between small base station cluster controller and source cell equipment.

It should be noted that if small base station cluster controller obtains the source from the acquisition user terminal context request The relevant information of cell equipment fails, or establishes communication link failure by mobile management nodes and the source cell equipment, Then small base station cluster controller establishes X2 link by operation and maintenance center OMC and the source cell equipment, and establishment process is similar to upper State the process that X2 link is established by mobile management nodes.

In the prior art, when there is no logical between the source base station and target BS for carrying out radio resource control connection reestablishment Believe link when, can only reconstruction failure, source base station and target BS itself will not do any processing.Compared with the prior art, In radio resource control connection reestablishment method proposed by the present invention, between small base station cluster controller and source cell equipment not The case where there are communication links can establish communication link according to the actual situation, to improve wireless heterogeneous networks connection weight The success rate built.

Optionally, in another embodiment of the present invention, the equipment received where the source cell is according to causing The signaling process of user terminal radio resource control connection reestablishment and the response message returned, comprising:

Specifically, the equipment where the source cell is according to the signaling flow for leading to user terminal radio resource control connection reestablishment The method of journey returning response information are as follows:

(1) when the user terminal is in hand off signaling process

If there are switchings in cluster for the user terminal, the equipment where source cell, which is cancelled switching and sending, to be obtained on user terminal Hereafter success response information includes the contextual information of the user terminal in the success response information；

If there are S1 switchings to attempt to handover to the cell outside cluster but handover failure for the user terminal, and wireless heterogeneous networks The purpose cell of connection re-establishment is still located in cluster (equipment where non-source cell), then the equipment cancellation where source cell is cut It changes and sends and obtain user terminal context success response information, the context comprising the user terminal is believed in the success response information Breath.

Specifically, obtaining user terminal context request information when the equipment where source cell receives, and recognize the user Rectify the equipment when carrying out S1 switching, where source cell and sends S1AP message HANDOVER to mobile management nodes MME CANCEL (handover cancelling), while the S1HoCancelTimer timer of itself starts timing；And the response message that MME is sent back to HANDOVER CANCEL ACKNOWLEDGE (handover cancelling confirmation) is the small base station of target by radio resource control connection reestablishment Processing, the equipment where source cell not will receive the confirmation message, in this case, equipment where source cell S1HoCancelTimer timer can timing always until time-out, when S1HoCancelTimer timer timing time-out, source Equipment where cell learns that handover cancelling is completed.Equipment where source cell is arranged waits S1HoCancelTimer timing Device time-out, the purpose is to guarantee handover cancelling complete before, the user terminal it is not new cause user terminal wireless heterogeneous networks connect The signaling process before re-establishing is connect to need and MME interaction.

It should be noted that for the user terminal for attempting progress radio resource control connection reestablishment, when it has switching letter When enabling process, and switching source cell and purpose cell PCI having the same (can be with frequency point difference), wireless heterogeneous networks connection weight Small base station where the purpose cell (and above-mentioned two cell is all different) built all is sent to the small base station where the two cells Obtain context request information.At this point, the small base station where switching purpose cell does not send any response message, only switch source Small base station where cell sends response message.Doing so, which ensure that, leads to radio resource control connection reestablishment and switching in switching Under all identical abnormal conditions of source/destination cell PCI, the reliability of radio resource control connection reestablishment.

(2) when the user terminal is in non-switching signaling procedure

Need to consider three kinds of possibilities at this time:

For example, if the ongoing signaling procedure of the user terminal are as follows: the RRC connection weight of ERAB management process triggering Match or RRC connection reconstruction triggering RRC connection reconfiguration or switching within cell triggering RRC connection reconfiguration, switching within cell The reason of non-TTI binding or user terminal capability query, then the equipment where source cell, which is sent, obtains user terminal context and unsuccessfully rings Answer information；

(3) when the user terminal is in other signaling procedures, the equipment where source cell does not send any response message.

In another embodiment of the present invention, another side for realizing radio resource control connection reestablishment is also disclosed Method is applied to small base station cluster controller, shown in Figure 6, this method comprises:

S601, the solicited message for receiving the radio resource control connection reestablishment that user terminal is sent, take in the solicited message Source cell information where identification information and user terminal with user terminal；

Specifically, wireless heterogeneous networks connection failure, Radio Link Failure, switching mistake has occurred when user terminal detects It loses, the either case of completeness check failure, the cell that a signal can be selected good, which initiates radio resource control connection reestablishment, asks It asks, i.e. the request of initiation RRC connection reconstruction.The solicited message is sent to small base station cluster controller belonging to the cell.

S602, the judgement signaling process for leading to user terminal radio resource control connection reestablishment corresponding with the identification information Whether radio resource control connection reestablishment is supported；

Specifically, the small base station cluster controller judgement is corresponding with the identification information to lead to user terminal radio resource control The method whether signaling process of connection reconstruction processed supports radio resource control connection reestablishment are as follows:

(1) when the user terminal is in hand off signaling process

If the user terminal, there are X2 switching, small base station cluster controller, which is cancelled, to be switched and judges that this causes user terminal wireless The signaling process of resources control connection reconstruction supports radio resource control connection reestablishment；

(2) when the user terminal is in non-switching signaling procedure

Need to consider three kinds of possibilities at this time:

(2.1) radio resource control connection reestablishment will not be again led to after radio resource control connection reestablishment, then judgement should The signaling process of user terminal radio resource control connection reestablishment is caused to support radio resource control connection reestablishment；

For example, if the ongoing signaling procedure of the user terminal is wireless heterogeneous networks connection reconfiguration, and the nothing Line resources control connection reconfiguration be by TTI binding activation/deactivation or non-default measuring configuration or secondary cell management, or it is logical It crosses PRACH distribution SR and is subsequently found step-out or transmission mode change and triggers, then cancel the process, and judge that this causes The signaling process of user terminal radio resource control connection reestablishment supports radio resource control connection reestablishment；

(2.2) radio resource control connection reestablishment may be again led to after radio resource control connection reestablishment, then judgement should The signaling process of user terminal radio resource control connection reestablishment is caused not support radio resource control connection reestablishment；

For example, if the ongoing signaling procedure of the user terminal are as follows: the RRC connection weight of ERAB management process triggering Match or RRC connection reconstruction triggering RRC connection reconfiguration or switching within cell triggering RRC connection reconfiguration, switching within cell The reason of non-TTI binding or user terminal capability query, then judge that this leads to the signaling of user terminal radio resource control connection reestablishment Process does not support radio resource control connection reestablishment；

(2.3) whether radio resource control connection reestablishment can occur again after radio resource control connection reestablishment can not be pre- Know, does not then judge.

(3) when the user terminal is in other signaling procedures, any judgement is not made.

If S603, the signaling process for leading to user terminal radio resource control connection reestablishment support wireless heterogeneous networks to connect Reconstruction is connect, then completes the radio resource control connection reestablishment of user terminal and the small base station of target according to user terminal contextual information；

Specifically, the source cell where the user terminal and the equipment where the source cell of connection are located at small base station cluster control In device processed, and the cell of radio resource control connection reestablishment also is located in small base station cluster controller, then in small base station cluster controller It is inside stored with the contextual information of the user terminal, small base station cluster controller can directly be believed using the user terminal context of storage Breath completes the radio resource control connection reestablishment of user terminal and the small base station of target.

If S604, it is described cause user terminal radio resource control connection reestablishment vertical before signaling process do not support wirelessly to provide Source controls connection reconstruction, then refuses the radio resource control connection reestablishment request.

The method for the realization radio resource control connection reestablishment that the present embodiment proposes, is applied to small base station cluster controller, first The solicited message for the radio resource control connection reestablishment that user terminal is sent first is received, the mark of user terminal is carried in the solicited message Know the source cell information where information and user terminal；Judgement is corresponding with the identification information to lead to user terminal wireless heterogeneous networks Whether the signaling process of connection reconstruction supports radio resource control connection reestablishment；If described cause user terminal wireless heterogeneous networks to connect The signaling process for connecing reconstruction supports radio resource control connection reestablishment, then completes user terminal and mesh according to user terminal contextual information Mark the radio resource control connection reestablishment of small base station；If the signaling process for leading to user terminal radio resource control connection reestablishment It does not support radio resource control connection reestablishment, then refuses the radio resource control connection reestablishment request.Technical solution of the present invention It is cooperated and is completed by small base station cluster controller, small base station and user terminal, be suitable for small base station cluster system, and realize process in scheme In, small base station cluster controller according to cause the signaling process of user terminal radio resource control connection reestablishment decide whether to carry out it is wireless Resources control connection reconstruction improves the efficiency of radio resource control connection reestablishment.

Optionally, in another embodiment of the present invention, shown in Figure 7, it is described to receive the wireless of user terminal transmission After the solicited message of resources control connection reconstruction, the method also includes:

S701, when the small base station cluster controller cannot successfully identify in the solicited message carry user terminal mark letter Breath and user terminal where source cell information when, according to the solicited message of the radio resource control connection reestablishment determine save institute State the source cell equipment of user terminal relevant information；

Specifically, the small base station cluster controller for managing the small base station can be protected for all user terminals connecting with small base station Deposit the identification information of these user terminals and the source cell information where user terminal and other relevant informations.When small base station cluster controller When receiving the solicited message of radio resource control connection reestablishment, it can be identified from the information and initiate the radio resource control The identification information of the user terminal of connection reconstruction request processed and the source cell information where user terminal.If small base station cluster controller hair There is no the correlations of the user terminal comprising initiating radio resource control connection reestablishment in the user terminal relevant information of itself existing storage Information, then it can be concluded that will not there be the contextual information of the user terminal in memory, i.e., the user terminal comes from cluster Outside.At this moment, small base station cluster controller determines this by the cell PCI that carries in the radio resource control connection reestablishment request that receives Source cell where user terminal may further determine that the source cell equipment where the user terminal by the source cell.It is described Source cell equipment is the controller that the user terminal initiates place before radio resource control connection reestablishment, in the source cell equipment In, the in store user terminal relevant information.Wherein, the source cell equipment be small base station cluster controller or with the small base station cluster The base station equipment of the same producer of controller (can communicate with one another with the small base station cluster controller).

S702, judge whether the condition of radio resource control connection reestablishment meets；

Specifically, small base station cluster controller judges whether the source cell of radio resource control connection reestablishment and purpose cell are full Sufficient neighboring BS relationship, judge the source cell and purpose cell whether meet can mutual switching condition, and judgement obtained with transmission It takes and whether meets the condition for establishing communication link between the small base station cluster controller of the user terminal context request information, only When above-mentioned condition meets simultaneously, small base station cluster controller just agrees to radio resource control connection reestablishment, otherwise the wireless money of refusal Source controls connection reconstruction.

It should be noted that if being unsatisfactory for neighboring BS relationship between the source cell and purpose cell, but the source is small RrcReestablishmentWithoutNeighborActive between area and purpose cell, which is switched, to be opened, then small base station cluster Controller is also thought to meet neighboring BS relationship between the source cell and purpose cell.

When radio resource control connection reestablishment condition meets, step S703 is continued to execute；When wireless heterogeneous networks connect When reconstruction condition is unsatisfactory for, small base station cluster controller refusal radio resource control connection reestablishment request.

S703, when the condition of the radio resource control connection reestablishment meets, the source cell Xiang Suoshu equipment send obtain The user terminal context request information, and start timing；

S704, when receiving the source cell equipment according to the signaling flow for leading to user terminal radio resource control connection reestablishment When the response message that journey returns, stops timing and the response message is analyzed and processed；

It, will be on the acquisition user terminal when the response message is to obtain the user terminal context success response information Context information is transmitted to the small base station of target of radio resource control connection reestablishment thereby executing radio resource control connection reestablishment；

When the response message is to obtain the user terminal context failure response information, refuse the radio resource control Connection reconstruction request processed；

Specifically, the source cell equipment cause user terminal radio resource control connection reestablishment vertical according to before letter The method for enabling process returning response information are as follows:

(1) when the user terminal is in hand off signaling process

(2) when the user terminal is in non-switching signaling procedure

Need to consider three kinds of possibilities at this time:

S705, when timing reaches the duration of setting, refuse radio resource control connection reestablishment request.

Specifically, when source cell equipment detects the contextual information or described for itself not storing the user terminal There are other signaling procedures, then any responses of source cell equipment not loopback for user terminal.In this case, small base station cluster controller meeting Timing always, until timing reaches setting duration, at this moment small base station cluster controller does not continue to wait, but directly described in refusal Radio resource control connection reestablishment request.

Another embodiment of the present invention discloses a kind of small base station cluster controller, shown in Figure 8, comprising:

Receiving unit 101, it is described to ask for receiving the solicited message for the acquisition user terminal context that the small base station of target is sent Ask the identification information for carrying user terminal in information and the source cell information where user terminal；

Information process unit 102, for the solicited message for obtaining user terminal context to be transmitted to where source cell Equipment and start timing；

When the response message is to obtain user terminal context success response information, by the acquisition user terminal context Success response information is transmitted to the small base station of the target, and the small base station of the target is made to execute the reconstruction of wireless heterogeneous networks connection It is vertical；

Specifically, the specific works content of each unit refers to corresponding embodiment of the method content in the present embodiment, this Place repeats no more.

Optionally, in another embodiment of the present invention, shown in Figure 8, the small base station cluster controller further include:

Analytical unit 201, for cannot successfully identify the user terminal carried in the solicited message when the receiving unit Identification information and user terminal where source cell information when, according to it is described obtain user terminal context solicited message determine protect Deposit the source cell equipment of the user terminal relevant information；Wherein, the source cell equipment includes: small base station cluster controller or energy Enough base station equipments with the small base station cluster controller interconnection；

Judging unit 202, for judging whether the condition of radio resource control connection reestablishment meets；

Timing processing unit 203, for judging that the condition of radio resource control connection reestablishment meets when the judging unit When, the source cell Xiang Suoshu equipment, which is sent, obtains the user terminal context request information, and starts timing；

Optionally, in another embodiment of the present invention, the judging unit 202 judges wireless heterogeneous networks connection weight When whether the condition built meets, it is specifically used for:

Optionally, in another embodiment of the present invention, the timing processing unit 203 is sent out to the source cell equipment When sending the acquisition user terminal context request information, it is specifically used for:

Communication link if it does not exist, then establish communication link, and the communication link by establishing is to the source cell equipment It sends and obtains the user terminal context request information.

Specifically, being specifically used for when the timing processing unit 203 establishes the process of communication link:

The relevant information of the source cell equipment is obtained from the acquisition user terminal context request；

According to the relevant information of the source cell equipment, communicated by mobile management nodes with source cell equipment foundation Link.

Specifically, the specific works content of timing processing unit 203 refers to corresponding embodiment of the method in the present embodiment Content, details are not described herein again.

Optionally, in another embodiment of the present invention, the information process unit 102 receives the source cell place Equipment cause the signaling process of user terminal radio resource control connection reestablishment to return according to response message when, it is specific to use In:

Reception is in hand off signaling flow state when user terminal, or heavy in that will not again lead to wireless heterogeneous networks connection When the non-switching signaling process state built, the acquisition user for the carrying user terminal contextual information that the equipment where source cell returns Hold context success response information；

It receives when user terminal is in the non-switching signaling process state that can again lead to radio resource control connection reestablishment, The acquisition user terminal context failure response information that equipment where source cell returns.

Specifically, the equipment where the source cell causes user terminal radio resource control connection reestablishment to stand it according to The method of preceding signaling process returning response information are as follows:

(1) when the user terminal is in hand off signaling process

(2) when the user terminal is in non-switching signaling procedure

Need to consider three kinds of possibilities at this time:

The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest scope of cause.

Claims

1. a kind of method for realizing radio resource control connection reestablishment, which is characterized in that be applied to small base station cluster controller, the party Method includes:

The solicited message for the acquisition user terminal context that the small base station of target is sent is received, carries user terminal in the solicited message Source cell information where identification information and user terminal；

The solicited message for obtaining user terminal context is transmitted to the equipment where source cell and starts timing；Wherein, institute Equipment where stating source cell includes the small base station where source cell；

Equipment where receiving the source cell is according to the signaling process for leading to user terminal radio resource control connection reestablishment And when the response message of return, stop timing and simultaneously the response message is analyzed and processed；

When the response message is to obtain user terminal context success response information, by acquisition user terminal context success Response message is transmitted to the small base station of the target, and the small base station of the target is made to execute radio resource control connection reestablishment；

When the response message is to obtain user terminal context failure response information, sends acquisition user terminal context and unsuccessfully ring It answers information to the small base station of the target, makes the small base station refusal radio resource control connection reestablishment request of the target；

2. the method according to claim 1, wherein described receive on the acquisition user terminal that the small base station of target is sent After solicited message hereafter, the method also includes:

When the small base station cluster controller cannot successfully identify the identification information and use of the user terminal carried in the solicited message When source cell information where the end of family, is determined according to the solicited message for obtaining user terminal context and save the user terminal phase Close the source cell equipment of information；Wherein, the source cell equipment includes: small base station cluster controller, or can be with the small base station The base station equipment of cluster controller interconnection；

When the condition of the radio resource control connection reestablishment meets, the source cell Xiang Suoshu equipment, which is sent, obtains the user terminal Context request information, and start timing；

When receiving the source cell equipment according to causing the signaling process of user terminal radio resource control connection reestablishment to return When response message, stops timing and the response message is analyzed and processed；

When the response message is to obtain the user terminal context success response information, by the acquisition user terminal context Success response information is transmitted to the small base station of the target, and the small base station of the target is made to execute radio resource control connection reestablishment；

When the response message is to obtain the user terminal context failure response information, by the acquisition user terminal context Failure response information is transmitted to the small base station of the target, asks the small base station refusal radio resource control connection reestablishment of the target It asks；

3. according to the method described in claim 2, it is characterized in that, the condition of the judgement radio resource control connection reestablishment is No satisfaction, comprising:

Judge whether the source cell of radio resource control connection reestablishment and purpose cell meet neighboring BS relationship, judge the source cell Whether whether meet with purpose cell can meet foundation between mutual switching condition, and judgement and the source cell equipment leads to Believe the condition of link；Wherein:

When above-mentioned condition meets simultaneously, the condition of the radio resource control connection reestablishment meets, the source cell Xiang Suoshu equipment It sends and obtains the user terminal context request information, and start timing.

4. according to the method described in claim 2, it is characterized in that, described send to the source cell equipment obtains the user Hold context request information, comprising:

Communication link if it exists then sends the acquisition user terminal context to the source cell equipment by the communication link and asks Seek information；

Communication link if it does not exist then establishes communication link by upper level Network Management Equipment or equipment of the core network, and passes through foundation Communication link sent to the source cell equipment and obtain the user terminal context request information.

5. the method according to claim 1, wherein the equipment received where the source cell is according to leading The response message for causing the signaling process of user terminal radio resource control connection reestablishment and returning, comprising:

It receives and is in hand off signaling flow state before radio resource control connection reestablishment when user terminal, or being in will not be again When the secondary non-switching signaling process state for leading to radio resource control connection reestablishment, the carrying that the equipment where source cell returns is used The acquisition user terminal context success response information of family end contextual information；

It receives heavy in wireless heterogeneous networks connection can be again led to before radio resource control connection reestablishment when user terminal When the non-switching signaling process state built, the acquisition user terminal context failure response information of the equipment return where source cell.

6. a kind of small base station cluster controller characterized by comprising

Receiving unit, for receiving the solicited message for the acquisition user terminal context that the small base station of target is sent, the solicited message The middle identification information for carrying user terminal and the source cell information where user terminal；

Information process unit, for the solicited message for obtaining user terminal context to be transmitted to the equipment where source cell simultaneously Start timing；Wherein, the equipment where the source cell includes the small base station where source cell；

7. small base station cluster controller according to claim 6, which is characterized in that the small base station cluster controller further include:

Analytical unit, for cannot successfully identify the mark letter of the user terminal carried in the solicited message when the receiving unit When source cell information where breath and user terminal, is determined according to the solicited message for obtaining user terminal context and save the use The source cell equipment of family end relevant information；Wherein, the source cell equipment includes: small base station cluster controller, or can with it is described The base station equipment of small base station cluster controller interconnection；

Timing processing unit, when for judging that the condition of radio resource control connection reestablishment meets when the judging unit, to institute It states source cell equipment and sends the acquisition user terminal context request information, and start timing；

8. small base station cluster controller according to claim 7, which is characterized in that the judging unit judges radio resource control When whether the condition of connection reconstruction processed meets, it is specifically used for:

9. small base station cluster controller according to claim 7, which is characterized in that the timing processing unit is small to the source When area's equipment sends the acquisition user terminal context request information, it is specifically used for:

10. small base station cluster controller according to claim 6, which is characterized in that it is small that information process unit receives the source When the response message that the equipment where area is returned according to the signaling process for leading to user terminal radio resource control connection reestablishment, tool Body is used for:

It receives and is in hand off signaling flow state before radio resource control connection reestablishment when user terminal, or being in will not be again When leading to the non-switching signaling process state of radio resource control connection reestablishment, the carrying user of the equipment return where source cell Hold the acquisition user terminal context success response information of contextual information；

It receives to be in front of radio resource control connection reestablishment when user terminal and can again lead to radio resource control connection reestablishment Non-switching signaling process state when, acquisition user terminal context failure response information that equipment where source cell returns.