CN107708104A

CN107708104A - The method and device of auxiliary base station change

Info

Publication number: CN107708104A
Application number: CN201610628935.3A
Authority: CN
Inventors: 吴昱民
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-08-03
Filing date: 2016-08-03
Publication date: 2018-02-16
Anticipated expiration: 2036-08-03
Also published as: CN107708104B

Abstract

The invention provides a kind of method and device of auxiliary base station change, wherein, the method for assistant base station change includes：Target prothetic group station, source prothetic group station and the above-mentioned UE of user equipment (UE) is notified to keep the connection with source prothetic group station during auxiliary base station change is carried out；The instruction message from target prothetic group station is received, wherein, instruction message is used to indicate that UE is successfully accessed target prothetic group station；According to the release of instruction message informing source prothetic group station and UE connection.By the present invention, solve the change do not supported in correlation technique under DC for SeNB, the problem of can not effectively triggering SeNB data forwarding and release, reach during the SeNB changes of user equipment, keep data communication, reduce the effect of data outage time.

Description

The method and device of auxiliary base station change

Technical field

The present invention relates to the communications field, in particular to a kind of method and device of auxiliary base station change.

Background technology

Dual link (Dual is introduced in long evolving system (Long Term Evolution, referred to as LTE) system Connectivity, referred to as DC) function, DC includes two small district's groups：Main plot group (Master Cell Group, referred to as ) and secondary cell group (Secondary Cell Group, referred to as SCG) MCG.Wherein MCG includes a main plot (Primary Cell, referred to as PCell) or additionally include one or more SCell, SCG include a PSCell or extra include one or Multiple secondary cells (Secondary Cell, referred to as SCell).Management MCG base station is referred to as MeNB, and manages SCG base station Referred to as SeNB.SCG bearer frameworks (as shown in Figure 1)：

User equipment (User Equipment, referred to as UE) has independent carrying in MeNB and SeNB, and UE drills each Entering on node B (Evolved Node B, referred to as eNB) has independent PDCP entities.The up-downgoing carrying of same carrying It is diverted on MeNB and SeNB and transmits during data difference.

Split bearer frameworks (as shown in Figure 2)：

Connections of the UE on MeNB can have independent carrying.UE is by the same evolution on MeNB in SeNB connection A part of data distribution of packet system (Evolved Packet System, referred to as EPS) carrying is to transmitting on SeNB, the EPS PDCP entities are carried still in MeNB, and are there are independent RLC entities on SeNB.

SeNB changing process：In the case of UE configurations DC as shown in Figure 3, the flow for changing SeNB is as follows：

1/2.MeNB sends a request message to target SeNB and gives UE distribution resources (the SeNB Addition in such as Fig. 3 Request message).Target SeNB sends feedback message and receives or refuse the request (SeNB in such as Fig. 3 to MeNB Addition Request Acknowledge message).

3. if target SeNB is successfully assigned with resource, MeNB triggers source of release SeNB, and before triggerable corresponding data Pass.(the SeNB Release Request message in such as Fig. 3)

4/5.MeNB triggerings UE uses new configuration, is altered to the target SeNB (wireless heterogeneous networks (Radio in such as Fig. 3 Resource Control, referred to as RRC) ConnectionReconfiguration message).UE configure-acks information is (as schemed RRCConnectionReconfigurationComplete message in 3).

6. if UE configuration successfuls, the MeNB notice target SeNB configuration successfuls (SeNB in such as Fig. 3 Reconfiguration Complete message).

7.UE starts to access target SeNB (the Random Access Procedure processes in such as Fig. 3).

If 8/9. data forwarding can use, source SeNB initiates data forwarding process, and the process is in receiving MeNB's Initiated after SeNB Release Request message.

10-14.MeNB can trigger route diversion flow according to configuration.

15. after UE Context Release message is received, the related UE contexts of source SeNB releases.

Keep the switching method (make-before-break) of source and target cell connection

Because current LTE system disconnects using elder generation in cell-of-origin, then connection is established in Target cell again Switching method (be i.e. break-before-make, first interrupted and established afterwards).The transmitting-receiving that business datum can be produced is interrupted.Therefore 3GPP Discussion group provides new scheme and is used for while keeps UE in cell-of-origin and connection (the i.e. make-before- of Target cell Break, first establish and interrupt afterwards).Interrupt latency is changed for reducing UE lateral incisions.

The make-before-bake schemes are described as follows as shown in 4 figures：

Step 1：UE reporting measurement reports (Measurement Report) give Internet.

Step 2：Source base station (Source eNB) sends handover request (Handover Request) and gives target BS (Target eNB)。

Step 3：Target BS agrees to switching, replys Handover Request Acknowledge (Handover Request Acknowledge)。

Step 4：Source base station sends switching command and reconfigured to UE, i.e. RRC connections (RRCConnectionReconfiguration) message.UE, which is received, remains in that (or source is small with source base station after switching command Area) connection do not discharge, retain cell-of-origin be configured to safeguard with the connection of cell-of-origin, preserve being configured to for Target cell The follow-up connection for building on target BS (or Target cell).UE is initiated in mesh while keeping and cell-of-origin data transfer The access procedure of cell is marked, such as carries out the down-going synchronous of Target cell.

Step 5a/5b:Source base station initiates data forwarding process, sends numbering state transfer information (5a.SN Status Transfer target BS) is given, and gives data forwarding (5b.Data forwarding) to target BS.

Step 6：UE initiates the Stochastic accessing access procedure in Target cell, such as by Physical Random Access Channel PRAC) H Channel sends up leading (peamble).

Step 7：Target BS replys accidental access response message (RAR) to UE.

Step 8：UE sends RRC connections configuration completion message (RRCConnectionReconfigurationComplete) To Target cell.

Step 9：Target BS instruction source base station release eats dishes without rice or wine to be connected with UE's, i.e. UE contexts release (UE Context Release) message.

For not supporting the change under DC for SeNB, SeNB data forwarding and asking for release can not be effectively triggered Inscribe, effective solution is not suggested that in correlation technique.

The content of the invention

The embodiments of the invention provide a kind of method and device of auxiliary base station change, at least to solve not prop up in correlation technique The change for SeNB under dual link (Dual Connectivity, referred to as DC) is held, can not effectively trigger SeNB data The problem of forward pass and release.

According to one embodiment of present invention, there is provided a kind of method of auxiliary base station change, including：Notify target prothetic group Stand, UE described in source prothetic group station and user equipment (UE) is kept during auxiliary base station change is carried out and the company at the source prothetic group station Connect；The instruction message from the target prothetic group station is received, wherein, the instruction message is used to indicate that the UE is successfully accessed institute State target prothetic group station；According to the release of source prothetic group station and the connection of the UE described in the instruction message informing.

Alternatively, the target prothetic group station, the source prothetic group station and UE described in the UE is notified to carry out prothetic group station change The connection with the source prothetic group station is kept to include during more：To the target prothetic group station, the source prothetic group station and described UE sends at least one following information：For the information for indicating to keep the UE to be connected with the source prothetic group station；For indicating to protect Hold the information for the timer configuration that the UE connects with the source prothetic group station.

Alternatively, methods described also includes：The information for indicating trigger data forward pass is sent to the source prothetic group station.

Alternatively, methods described also includes：Request message is sent to the target prothetic group station, wherein, the request message For asking the target prothetic group station to configure at least one following information for the UE：For indicating that the UE is kept and source prothetic group Stand connection information；The information of the timer configuration connected for indicating the UE to keep with source prothetic group station.

According to another embodiment of the invention, there is provided a kind of method of auxiliary base station change, including：Receive master base station hair The first notification message sent, wherein, first notification message is used to notify following information：User equipment (UE) is carrying out prothetic group station The connection with source prothetic group station is kept during change；Connection with the UE is kept according to first notification message；Receive The master base station is it is determined that the UE is successfully accessed the second notification message that is sent behind target prothetic group station；According to the described second notice Message discharges the connection with the UE.

Alternatively, first notification message includes at least one following information：For indicating to keep being connected with the UE Information；For indicating to keep the information with the UE timer configurations being connected；For indicating the information of trigger data forward pass.

Alternatively, methods described includes at least one of：Receiving the letter for being used to indicate trigger data forward pass After breath, the process of trigger data forward pass, and keep the connection with the UE；It is being used to indicate to keep and the UE described in reception After the information of the timer configuration of connection, start the timer, and the company with the UE is kept before the timer expiry Connect.

According to another embodiment of the invention, there is provided a kind of method of auxiliary base station change, including：Receive master base station hair The third notice message sent, wherein, the third notice message is used to notify following information：User equipment (UE) is carrying out prothetic group station The connection with the source prothetic group station is kept during change；Connect the UE；After it is determined that being successfully connected the UE, to described Master base station sends instruction message, wherein the instruction message is used to indicate the master base station notice source prothetic group station release and the UE Connection.

Alternatively, the third notice message includes at least one following information：For indicate to keep the UE with it is described The information of source prothetic group station connection；For the information for the timer configuration for indicating to keep the UE to connect with the source prothetic group station.

Alternatively, methods described also includes：Receive the request message from master base station；It is described according to the request message UE configures at least one following information：The information being connected for indicating the UE to keep with source prothetic group station；For indicating the UE Keep the information of timer configuration connected with source prothetic group station.

Optionally it is determined that being successfully connected the UE includes at least one of：Receive the physical accidental access of the UE Channel PRACH signal；Receive the upstream data that the UE is sent；The UE that carries that the UE is sent is received to identify Configured information.

According to another embodiment of the invention, there is provided a kind of method of auxiliary base station change, including：Receive master base station hair The 4th notification message sent, wherein, the 4th notification message is used to notify following information：User equipment (UE) is carrying out prothetic group station The notice being connected with the source prothetic group station is kept during change；Keep the connection with the source prothetic group station and access target Prothetic group station；Release and the connection at the source prothetic group station.

Alternatively, the 4th notice message package includes at least one following information：For indicating to keep and the source prothetic group Stand connection information；The configuration information of the timer connected for indicating holding with the source prothetic group station.

Alternatively, keep the connection with the source prothetic group station and access target prothetic group station and release and the source prothetic group station Connection include at least one of：Receiving matching somebody with somebody for the timer for being used to indicate to keep connecting with the source prothetic group station After confidence breath, start the timer, and release and the connection of source secondary cell group after the timer expiry；With target master After down-going synchronous is completed in assisted cell, release and the connection of source secondary cell group；Possess at first and thing is sent on Target cell Release and the connection of source secondary cell group in 1 subframe of kth before the subframe of RACH PRACH ability are managed, wherein, institute It is the subframe position that agreement is made an appointment to state k1；Possesses the subframe for the ability that upward signal is sent on Target cell at first Preceding 2 subframe releases of kth and the connection of source secondary cell group, wherein, the k₂The subframe position made an appointment for agreement.

Alternatively, the duration of the timer includes at least one of：Match somebody with somebody from the network side for receiving source base station transmission At the time of confidence makes, the timing duration to network side configuration terminates；Received from UE and handled network side configuration signal Moment, the timing duration to network side configuration terminate.

Alternatively, release and the connection at the source prothetic group station include at least one of：Rebuild the bag data of secondary cell group Convergence protocol PDCP entity；Rebuild the wireless spread-spectrum technology RLC of secondary cell group entity；Reset the media access of secondary cell group Control the entity of medium education (Medium Access Control, referred to as MAC)；Using the configuration of Target cell.

Alternatively, after the target prothetic group station is accessed, methods described also includes：In Physical Random Access Channel Signal is sent on PRACH；Send upstream data；Send the configured information for the mark for carrying the UE.

According to another embodiment of the invention, there is provided a kind of device of auxiliary base station change, including：First notice mould Block, for notifying target prothetic group station, UE is protected during auxiliary base station change is carried out described in source prothetic group station and user equipment (UE) Hold the connection with the source prothetic group station；First receiving module, for receiving the instruction message from the target prothetic group station, its In, the instruction message is used to indicate that the UE is successfully accessed the target prothetic group station；Second notification module, for according to Indicate source prothetic group station release described in message informing and the connection of the UE.

Alternatively, first notification module includes transmitting element, for the target prothetic group station, the source prothetic group station And the UE sends at least one following information：For the information for indicating to keep the UE to be connected with the source prothetic group station；With In the information for the timer configuration that the instruction holding UE connects with the source prothetic group station.

Alternatively, the transmitting element is additionally operable to send the letter for indicating trigger data forward pass to the source prothetic group station Breath.

Alternatively, described device also includes：Second sending module, for sending request message to the target prothetic group station, Wherein, the request message is used to ask the target prothetic group station to configure at least one following information for the UE：For indicating The UE keeps the information being connected with source prothetic group station；The timer configuration connected for indicating the UE to keep with source prothetic group station Information.

According to another embodiment of the invention, there is provided a kind of device of auxiliary base station change, including：Second receives mould Block, for receiving the first notification message of master base station transmission, wherein, first notification message is used to notify following information：With Family equipment UE keeps the connection with source prothetic group station during auxiliary base station change is carried out；Module is kept, for according to described the One notification message keeps the connection with the UE；3rd receiving module, for receiving the master base station it is determined that UE successes The second notification message sent behind access target prothetic group station；First link block, for being discharged according to the second notification message With the connection of the UE.

Alternatively, described device also includes at least one of：Trigger module, for described being used to indicate to touch receiving After the information for sending out data forwarding, the process of trigger data forward pass, and keep the connection with the UE；Starting module, for connecing That receives is described for indicating to keep and after the information of the UE timer configurations being connected, starting the timer, and described The connection with the UE is kept before timer expiry.

According to another embodiment of the invention, there is provided a kind of device of auxiliary base station change, including：4th receives mould Block, for receiving the third notice message of master base station transmission, wherein, the third notice message is used to notify following information：With Family equipment UE keeps the connection with the source prothetic group station during auxiliary base station change is carried out；Second link block, for even Meet the UE；First sending module, for after determination is successfully connected the UE, instruction message to be sent to the master base station, its Described in indicate that message is used to indicate the source prothetic group station release of master base station notice and the connection of the UE.

Alternatively, described device also includes：6th receiving module, for receiving the request message from master base station；Configuration Module, for being that the UE configures at least one following information according to the request message：For indicating the UE holdings and source The information of prothetic group station connection；The information of the timer configuration connected for indicating the UE to keep with source prothetic group station.

Alternatively, second link block determines to be successfully connected the user equipment (UE) by least one of：Connect Receive the Physical Random Access Channel PRACH of UE signal；Receive the upstream data that the UE is sent；Receive described What UE was sent carries the configured information of the UE marks.

According to another embodiment of the invention, there is provided a kind of device of auxiliary base station change, including：4th receives mould Block, for receiving the 4th notification message of master base station transmission, wherein, the 4th notification message is used to notify following information：With Family equipment UE keeps the notice being connected with the source prothetic group station during auxiliary base station change is carried out；Processing module, it is used for Keep the connection with the source prothetic group station and access target prothetic group station；Release module, for discharging the company with the source prothetic group station Connect.

Alternatively, the processing module and the release module are kept and the source prothetic group station by least one of Connect and access target prothetic group station and discharge the connection with the source prothetic group station：It is described for indicating holding and institute receiving After the configuration information for stating the timer of source prothetic group station connection, start the timer, and after the timer expiry release with The connection of source secondary cell group；After down-going synchronous is completed with target main auxiliary cell, release and the connection of source secondary cell group； Kth before one subframe for possessing the ability that Physical Random Access Channel PRACH is sent on Target cell₁Discharged in individual subframe With the connection of source secondary cell group, wherein, the k₁The subframe position made an appointment for agreement；Possess at first in Target cell Kth before the subframe of the upper ability for sending upward signal₂Individual subframe release and the connection of source secondary cell group, wherein, the k₂For association Discuss the subframe position made an appointment.

According to still another embodiment of the invention, a kind of storage medium is additionally provided.The storage medium is arranged to storage and used The program code of each step more than performing.

Alternatively, storage medium is also configured to the program code that storage is used to perform each step above.

By the present invention, because notice UE keeps the company with the source prothetic group station during auxiliary base station change is carried out Connect, and the release of instruction message informing source prothetic group station and the connection of user equipment sent according to the target prothetic group station of reception, therefore, Can solve not supporting the change under DC for SeNB in correlation technique, can not effectively trigger SeNB data forwarding and release The problem of, reach during the SeNB changes of user equipment, keep data communication, reduce the effect of data outage time.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is the SCG bearer Organization Charts in correlation technique；

Fig. 2 is the Split bearer Organization Charts in correlation technique；

Fig. 3 is the SeNB changing process figures in correlation technique；

Fig. 4 is the hand off signaling flow chart in correlation technique；

Fig. 5 is the hardware block diagram of the mobile terminal of the method for auxiliary base station change according to embodiments of the present invention；

Fig. 6 is method flow diagram (one) according to embodiments of the present invention；

Fig. 7 is method flow diagram (two) according to embodiments of the present invention；

Fig. 8 is method flow diagram (three) according to embodiments of the present invention；

Fig. 9 is method flow diagram (four) according to embodiments of the present invention；

Figure 10 is that the flow chart (one) for keeping connecting with S-SeNB is directly configured according to the MeNB of the specific embodiment of the invention；

Figure 11 is that the flow chart (two) for keeping connecting with S-SeNB is directly configured according to the MeNB of the specific embodiment of the invention；

Figure 12 is the structured flowchart (one) according to the auxiliary base station change of alternative embodiment of the present invention；

Figure 13 is the preferred structure block diagram (one) of auxiliary base station change according to embodiments of the present invention；

Figure 14 is the structured flowchart (two) according to the auxiliary base station change of alternative embodiment of the present invention；

Figure 15 is the preferred structure block diagram (two) of auxiliary base station change according to embodiments of the present invention；

Figure 16 is the structured flowchart (three) according to the auxiliary base station change of alternative embodiment of the present invention；

Figure 17 is the preferred structure block diagram (three) of auxiliary base station change according to embodiments of the present invention；

Figure 18 is the structured flowchart (four) according to the auxiliary base station change of alternative embodiment of the present invention.

Embodiment

Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.

It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " Two " etc. be for distinguishing similar object, without for describing specific order or precedence.

The embodiment of the method that the embodiment of the present application is provided can be in mobile terminal, terminal or similar computing Performed in device.Exemplified by running on mobile terminals, Fig. 5 is the shifting of the method for auxiliary base station change according to embodiments of the present invention The hardware block diagram of dynamic terminal.As shown in figure 5, mobile terminal 50 can include one or more (one is only shown in Fig. 5) (processor 502 can include but is not limited to Micro-processor MCV or PLD FPGA etc. processing dress to processor 502 Put), the memory 504 for data storage and the transmitting device 506 for communication function.Those of ordinary skill in the art It is appreciated that the structure shown in Fig. 5 is only to illustrate, it does not cause to limit to the structure of above-mentioned electronic installation.It is for example, mobile whole End 50 may also include more either less components than shown in Fig. 5 or have the configuration different from shown in Fig. 5.

Memory 504 can be used for the software program and module of storage application software, such as the prothetic group in the embodiment of the present invention Stand programmed instruction/module corresponding to the method for change, processor 502 is stored in software program in memory 504 by operation And module, so as to perform various function application and data processing, that is, realize above-mentioned method.Memory 504 may include height Fast random access memory, may also include nonvolatile memory, as one or more magnetic storage device, flash memory or other Non-volatile solid state memory.In some instances, memory 504 can further comprise remotely located relative to processor 502 Memory, these remote memories can pass through network connection to mobile terminal 50.The example of above-mentioned network includes but unlimited In internet, intranet, LAN, mobile radio communication and combinations thereof.

Transmitting device 506 is used to data are received or sent via a network.Above-mentioned network instantiation may include The wireless network that the communication providerses of mobile terminal 50 provide.In an example, transmitting device 506 includes a Network adaptation Device (Network Interface Controller, referred to as NIC), its can be connected by base station with other network equipments so as to It can be communicated with internet.In an example, transmitting device 506 can be that radio frequency (Radio Frequency, is referred to as RF) module, it is used to wirelessly be communicated with internet.

A kind of method for the auxiliary base station change for running on above-mentioned mobile terminal is provided in the present embodiment, and Fig. 6 is basis The method flow diagram (one) of the embodiment of the present invention, as shown in fig. 6, the flow comprises the following steps：

Step S602, notice target prothetic group station, source prothetic group station and the above-mentioned UE of user equipment (UE) are carrying out auxiliary base station change During keep and the connection at above-mentioned source prothetic group station；

Step S604, the instruction message from above-mentioned target prothetic group station is received, wherein, above-mentioned instruction message is used to indicate State UE and be successfully accessed above-mentioned target prothetic group station；

Step S606, according to the above-mentioned source prothetic group station release of above-mentioned instruction message informing and above-mentioned UE connection.

By above-mentioned steps, because notice UE keeps the company with above-mentioned source prothetic group station during auxiliary base station change is carried out Connect, and the release of instruction message informing source prothetic group station and the connection of user equipment sent according to the target prothetic group station of reception, therefore, Can solve not supporting the change under DC for SeNB in correlation technique, can not effectively trigger SeNB data forwarding and release The problem of, reach during the SeNB changes of user equipment, keep data communication, reduce the effect of data outage time.

Alternatively, the executive agent of above-mentioned steps can be master base station etc., but not limited to this.

In an optional embodiment, above-mentioned target prothetic group station, above-mentioned source prothetic group station and above-mentioned UE, above-mentioned UE are notified The connection with above-mentioned source prothetic group station is kept to include during auxiliary base station change is carried out：To above-mentioned target prothetic group station, above-mentioned source Prothetic group station and above-mentioned UE send at least one following information：For the letter for indicating to keep above-mentioned UE to be connected with above-mentioned source prothetic group station Breath；For the information for the timer configuration for indicating to keep above-mentioned UE to connect with above-mentioned source prothetic group station.In the present embodiment, above-mentioned guarantor The information for holding the timer configuration that above-mentioned UE connects with above-mentioned source prothetic group station is used to indicate the auxiliary base station initiated timer in above-mentioned source, and The connection with user equipment is kept not discharge before timer expiry.

In an optional embodiment, the above method also includes：Sent to above-mentioned source prothetic group station for indicating triggering number According to the information of forward pass.In the present embodiment, the instruction of above-mentioned data forwarding is used to indicate that source prothetic group station is available in data forwarding In the case of, trigger data forward pass process, while keep the connection with user equipment not discharge.

In an optional embodiment, the above method also includes：Request message is sent to above-mentioned target prothetic group station, its In, above-mentioned request message is used to ask above-mentioned target prothetic group station to configure at least one following information for above-mentioned UE：For instruction State the information that UE keeps being connected with source prothetic group station；The letter of the timer configuration connected for indicating above-mentioned UE to keep with source prothetic group station Breath.

Fig. 7 is method flow diagram (two) according to embodiments of the present invention, as shown in fig. 7, the flow comprises the following steps：

Step S702, receive master base station send the first notification message, wherein, above-mentioned first notification message be used for notify with Lower information：User equipment (UE) keeps the connection with source prothetic group station during auxiliary base station change is carried out；

Step S704, the connection with above-mentioned UE is kept according to above-mentioned first notification message；

Step S706, above-mentioned master base station is received it is determined that above-mentioned UE is successfully accessed the second notice for sending behind target prothetic group station Message；

Step S708, according to the release of above-mentioned second notification message and above-mentioned UE connection.

By above-mentioned steps, because the first notification message and the UE that are sent according to master base station keep connecting, according to master base station Second notification message release and the UE connection of transmission, therefore, can solve not supporting under DC for SeNB's in correlation technique Change, the problem of can not effectively triggering SeNB data forwarding and release, reach during the SeNB changes of user equipment, Data communication is kept, reduces the effect of data outage time.

Alternatively, the executive agent of above-mentioned steps can be source prothetic group station etc., but not limited to this.

In an optional embodiment, above-mentioned first notification message includes at least one following information：For indicating to protect Hold the information being connected with above-mentioned UE；For indicating to keep the information with the above-mentioned UE timer configurations being connected；For indicating to trigger The information of data forwarding.

In an optional embodiment, the above method includes at least one of：It is above-mentioned for indicating to touch receiving After the information for sending out data forwarding, the process of trigger data forward pass, and keep the connection with above-mentioned UE；Above-mentioned in reception is used to refer to Show holding with after the information of the above-mentioned UE timer configurations being connected, starting above-mentioned timer, and protected before above-mentioned timer expiry Hold the connection with above-mentioned UE.

Fig. 8 is method flow diagram (three) according to embodiments of the present invention, as shown in figure 8, the flow comprises the following steps：

Step S802, receive master base station send third notice message, wherein, above-mentioned third notice message be used for notify with Lower information：User equipment (UE) keeps the connection with above-mentioned source prothetic group station during auxiliary base station change is carried out；

Step S804, connect above-mentioned UE；

Step S806, after it is determined that being successfully connected above-mentioned UE, instruction message is sent to above-mentioned master base station, wherein above-mentioned instruction Message is used to indicate above-mentioned master base station notice source prothetic group station release and above-mentioned UE connection.

By above-mentioned steps, due to after receiving third notice message that master base station sends and be connected with UE, to master base station hair Instruction message is sent, wherein above-mentioned instruction message is used to indicate the source prothetic group station release of master base station notice and UE connection.Therefore, can be with Solve not supporting the change under DC for SeNB in correlation technique, can not effectively trigger SeNB data forwarding and asking for release Topic, reach during the SeNB changes of user equipment, keep data communication, reduce the effect of data outage time.

Alternatively, the executive agent of above-mentioned steps can be target prothetic group station etc., but not limited to this.

In an optional embodiment, above-mentioned third notice message includes at least one following information：For indicating to protect Hold the information that above-mentioned UE is connected with above-mentioned source prothetic group station；For the timer for indicating to keep above-mentioned UE to connect with above-mentioned source prothetic group station The information of configuration.

In an optional embodiment, the above method also includes：Receive the request message from master base station；According to above-mentioned Request message is that above-mentioned UE configures at least one following information：The information being connected for indicating above-mentioned UE to keep with source prothetic group station； The information of the timer configuration connected for indicating above-mentioned UE to keep with source prothetic group station.

In an optional embodiment, it is determined that being successfully connected above-mentioned UE includes at least one of：Receive above-mentioned UE Physical Random Access Channel PRACH signal；Receive the upstream data that above-mentioned UE is sent；Receive taking for above-mentioned UE transmissions Configured information with above-mentioned UE marks.

Fig. 9 is method flow diagram (four) according to embodiments of the present invention, as shown in figure 9, the flow comprises the following steps：

Step S902, receive master base station send the 4th notification message, wherein, above-mentioned 4th notification message be used for notify with Lower information：User equipment (UE) keeps the notice being connected with above-mentioned source prothetic group station during auxiliary base station change is carried out；

Step S904, keep the connection with above-mentioned source prothetic group station and access target prothetic group station；

Step S906, release and the connection at above-mentioned source prothetic group station.

By above-mentioned steps, due to keeping connection simultaneously with source prothetic group station according to the 4th notification message for receiving master base station transmission After accessing target prothetic group station, release and the connection at above-mentioned source prothetic group station.Therefore, it is right under DC to solve not support in correlation technique In SeNB change, the problem of can not effectively triggering SeNB data forwarding and release, reach the SeNB changes in user equipment During more, data communication is kept, reduces the effect of data outage time.

Alternatively, the executive agent of above-mentioned steps can be terminal etc., but not limited to this.

In an optional embodiment, above-mentioned 4th notice message package includes at least one following information：For indicating to protect Hold the information being connected with above-mentioned source prothetic group station；The configuration information of the timer connected for indicating holding with above-mentioned source prothetic group station.

In an optional embodiment, keep the connection with above-mentioned source prothetic group station and access target prothetic group station and release Connection with above-mentioned source prothetic group station includes at least one of：Connect receiving above-mentioned instruction holding and the above-mentioned source prothetic group station of being used for After the configuration information of the timer connect, start above-mentioned timer, and release and source secondary cell group after above-mentioned timer expiry Connection；After down-going synchronous is completed with target main auxiliary cell, release and the connection of source secondary cell group；Possess at first in mesh Mark the kth before the subframe for the ability that Physical Random Access Channel PRACH is sent in cell₁Release and source secondary cell group in individual subframe Connection, wherein, above-mentioned k₁The subframe position made an appointment for agreement；Possess at first and up letter is sent on Target cell Number ability subframe before kth₂Individual subframe release and the connection of source secondary cell group, wherein, above-mentioned k₂Made an appointment for agreement Subframe position.In the present embodiment, k₁、k₂It can be identical subframe position, or different subframe positions.

In an optional embodiment, the duration of above-mentioned timer can include at least one of：From receiving source At the time of the network side configuration signal that base station is sent, the timing duration to network side configuration terminates network side configuration signal； Since at the time of UE is received and has handled network side configuration signal, the timing duration to network side configuration terminates.In this implementation In example, the effect of above-mentioned network side configuration signal is triggering SCG changes, i.e., source SCG is altered to target SCG, the network side is matched somebody with somebody Confidence order is referred to as " SCG changes order ".

In an optional embodiment, release and the connection at above-mentioned source prothetic group station include at least one of：Rebuild auxiliary The packet data convergence protocol PDCP of small district's groups entity；Rebuild wireless spread-spectrum technology (the Radio Link of secondary cell group Control, referred to as RLC) entity；Reset the entity of the media access control MAC of secondary cell group；Using matching somebody with somebody for Target cell Put.In the present embodiment, UE for source and target secondary cell group using identical PDCP/RLC/MAC entities, source is auxiliary small District's groups are altered to need to perform process of reconstruction to these entities when target secondary cell group.

In an optional embodiment, after above-mentioned target prothetic group station is accessed, the above method also includes：Physics with Signal is sent on machine access channel PRACH；Send upstream data；Send the configured information for the mark for carrying above-mentioned UE.

Below according to specific embodiment, the present invention will be described：

Specific embodiment 1：MeNB directly configures holding and connected with S-SeNB.

Figure 10 is that the flow chart (one) for keeping connecting with S-SeNB is directly configured according to the MeNB of the specific embodiment of the invention, As shown in Figure 10, each step is described below：

Step 1：MeNB sends a request message to target SeNB and gives UE distribution resources (SeNB Addition in such as Figure 10 Request message).

Step 2：Target SeNB sends feedback message and receives or refuse the request (SeNB in such as Figure 10 to MeNB Addition Request Acknowledge message).

Step 3：MeNB determines to need to keep connections of the UE in S-SeNB during SeNB changes, and MeNB sends instruction letter Cease and to S-SeNB reconfigure (SeNB Reconfiguration message in such as Figure 10) from S-SeNB, the configured information it is interior Appearance includes：

Keep the instruction connected with source prothetic group station；

The timer configuration connected with source prothetic group station is kept, includes the timing duration of timer；

The instruction of trigger data forward pass.

Step 4a/b/c：If source prothetic group station receives the instruction of trigger data forward pass, source prothetic group station can in data forwarding In the case of, trigger data forward pass process, while keep UE connection not discharge.If source prothetic group station receives holding and source The timer configuration of prothetic group station connection, then source assistant base station starts the timer, and UE connection is kept before timer expiry Do not discharge.

Step 5：Master base station is when notifying UE change prothetic group stations (in such as Figure 10 RRCConnectionReconfiguration message), include following information：

Keep the instruction (the remainConnectionIndication instructions in such as Figure 10) connected with source prothetic group station；

Keep the timer configuration that is connected with source prothetic group station, including timer timing duration (in Figure 10 RemainConnectionTimer is configured)；

Step 6：UE is to master base station feedback configuration result (in Figure 10 RRCConnectionReconfigurationComplete message), and initiate prothetic group station change process and target prothetic group station build It is vertical synchronous, while keep the connection with source prothetic group station.

UE is kept based on following condition and the connection at source prothetic group station：

UE starts after the timer configuration for keeping connecting with source prothetic group station is received and keeps determining with what source prothetic group station connected When device, and the source of release secondary cell group after timer expiry；

UE completes down-going synchronous with target main auxiliary cell (Primary Secondary Cell, referred to as PSCell) Source of release secondary cell group afterwards；

UE can send the kth before PRACH subframe on Target cell at first and give subframe source of release secondary cell group, Wherein k is the subframe position that agreement is made an appointment；

UE can send the kth before the subframe of upward signal on Target cell at first and give subframe source of release secondary cell Group, wherein k are the subframe position that agreement is made an appointment.

It is a length of during the timing of UE timer：

Since at the time of receiving network side configuration signal, untill the timing duration of network side configuration terminates；

Since at the time of UE is received and has handled network side configuration signal, to network side configuration timing duration terminate for Only；

The behavior of UE source of release secondary cell groups can be shown as：

The packet data convergence protocol for rebuilding secondary cell group (Packet Data Convergence Protocol, is referred to as PDCP) entity；

Rebuild the RLC entities of secondary cell group；

Reset the MAC entity of secondary cell group；

Using the configuration of target secondary cell group.

Step 7：If UE configuration successfuls, master base station (Master eNB；, referred to as MeN) and B notice target SeNB configurations Success (the SeNB Reconfiguration Complete message in such as Figure 10).

Step 8：UE starts to access target prothetic group station (Secondary eNB, referred to as SeNB) (Random in such as Figure 10 Access Procedure processes).

Step 9a：Target prothetic group station sends configured information notice master base station (as schemed after UE is successfully accessed target prothetic group station SeNB Release Indication message in 10).

Target prothetic group station judges that UE is successfully accessed the Rule of judgment at target prothetic group station and included：

Receive UE PRACH signals；

Receive the upstream data of UE transmissions；

Receive the UE configured information with UE marks；

Step 9b：Master base station notice source prothetic group station release UE connection (the SeNB Release in such as Figure 10 Indication message).

If Data Radio Bearer (Data Radio Bearer, referred to as DRB) type of step 10-14. UE configurations is It is SCG bearer, MeNB can trigger route diversion flow according to configuration.

Step 15. is after UE Context Release message is received, the related UE contexts of source SeNB releases.

Specific embodiment 2：MeNB instructions target prothetic group station (Target SeNB, referred to as T-SeNB) configuration is kept and source The connection at prothetic group station (Source SeNB, referred to as S-SeNB).

Figure 11 is that the flow chart (two) for keeping connecting with S-SeNB is directly configured according to the MeNB of the specific embodiment of the invention, As shown in figure 11, each step is described below：

Step 1：MeNB sends a request message to target SeNB and gives UE distribution resources (the SeNB Addition in such as Figure 11 Request message).Simultaneously herein below is carried in X2 interface：

Keep the instruction (the remainConnectionIndication instructions in such as Figure 11) connected with source prothetic group station；

Keep the timer configuration that is connected with source prothetic group station, including timer timing duration (in Figure 11 RemainConnectionTimer is configured)；

Step 2：Target SeNB sends feedback message and receives or refuse the request (SeNB in such as Figure 11 to MeNB Addition Request Acknowledge message).Herein below is carried in the RRC information for be sent to MeNB simultaneously：

Step 3-15：With the step 3-15 in specific embodiment 1.

Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot In the case of the former be more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing The part that technology contributes can be embodied in the form of software product, and the computer software product is stored in a storage In medium (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal equipment (can be mobile phone, calculate Machine, server, or network equipment etc.) perform method described in each embodiment of the present invention.

Additionally provide a kind of prothetic group station change device in the present embodiment, the device is used to realizing above-described embodiment and preferably Embodiment, repeating no more for explanation was carried out.As used below, term " module " can realize predetermined function The combination of software and/or hardware.Although device described by following examples is preferably realized with software, hardware, or The realization of the combination of person's software and hardware is also what may and be contemplated.

Figure 12 is the structured flowchart (one) according to the auxiliary base station change of alternative embodiment of the present invention, as shown in figure 12, the dress Put including：First notification module 122, the first receiving module 124 and the second notification module 126, are illustrated to the device below：

First notification module 122, for notifying target prothetic group station, source prothetic group station and the above-mentioned UE of user equipment (UE) carrying out The connection with above-mentioned source prothetic group station is kept during auxiliary base station change；First receiving module 124, it is connected to above-mentioned first notice Module 122, for receiving the instruction message from above-mentioned target prothetic group station, wherein, above-mentioned instruction message is used to indicate above-mentioned UE It is successfully accessed above-mentioned target prothetic group station；Second notification module 126, above-mentioned first receiving module 124 is connected to, for according to above-mentioned Indicate the above-mentioned source prothetic group station release of message informing and above-mentioned UE connection.

In an optional embodiment, above-mentioned first notification module 122 includes transmitting element, for auxiliary to above-mentioned target Base station, above-mentioned source prothetic group station and above-mentioned UE send at least one following information：For indicating to keep above-mentioned UE and above-mentioned source auxiliary The information of base station connection；For the information for the timer configuration for indicating to keep above-mentioned UE to connect with above-mentioned source prothetic group station.

In an optional embodiment, above-mentioned transmitting element is additionally operable to send for indicating triggering to above-mentioned source prothetic group station The information of data forwarding.

In an optional embodiment, Figure 13 is the preferred structure block diagram of auxiliary base station change according to embodiments of the present invention (1), as shown in figure 13, said apparatus can also include：Second sending module 132, please for being sent to above-mentioned target prothetic group station Message is sought, wherein, above-mentioned request message is used to ask above-mentioned target prothetic group station to configure at least one following information for above-mentioned UE：With In the information that the above-mentioned UE of instruction keeps being connected with source prothetic group station；The timer connected for indicating above-mentioned UE to keep with source prothetic group station The information of configuration.

Figure 14 is the structured flowchart (two) of auxiliary base station change according to embodiments of the present invention, as shown in figure 14, the device bag Include：Second receiving module 142, module 144, the 3rd receiving module 146, the first link block 148 are kept, the device is entered below Row explanation：

Second receiving module 142, for receiving the first notification message of master base station transmission, wherein, above-mentioned first notice disappears Cease for notifying following information：User equipment (UE) keeps the connection with source prothetic group station during auxiliary base station change is carried out；Protect Module 144 is held, is connected to above-mentioned second receiving module 142, for keeping the company with above-mentioned UE according to above-mentioned first notification message Connect；3rd receiving module 146, above-mentioned holding module 144 is connected to, for receiving above-mentioned master base station it is determined that above-mentioned UE successfully connects Enter the second notification message sent behind target prothetic group station；First link block 148, above-mentioned 3rd receiving module 146 is connected to, used According to the release of above-mentioned second notification message and above-mentioned UE connection.

In an optional embodiment, above-mentioned first notification message can include at least one following information：For referring to Show the information for keeping being connected with above-mentioned UE；For indicating to keep the information with the above-mentioned UE timer configurations being connected；For indicating The information of trigger data forward pass.

In an optional embodiment, Figure 15 is the preferred structure block diagram of auxiliary base station change according to embodiments of the present invention (2), as shown in figure 15, said apparatus can also include at least one of：Trigger module 152, for receiving above-mentioned use After the information of instruction trigger data forward pass, the process of trigger data forward pass, and keep the connection with above-mentioned UE；Starting module 154, for being used to indicate to keep with after the information of the above-mentioned UE timer configurations being connected, starting above-mentioned timing in the above-mentioned of reception Device, and holding and above-mentioned UE connection before above-mentioned timer expiry.

Figure 16 is the structured flowchart (three) according to the auxiliary base station change of alternative embodiment of the present invention, as shown in figure 16, the dress Put including：4th receiving module 162, the second link block 164, the first sending module 166, are illustrated to the device below：

4th receiving module 162, for receiving the third notice message of master base station transmission, wherein, above-mentioned third notice disappears Cease for notifying following information：User equipment (UE) keeps the company with above-mentioned source prothetic group station during auxiliary base station change is carried out Connect；Second link block 164, above-mentioned 4th receiving module 162 is connected to, for connecting above-mentioned UE；First sending module 166, Above-mentioned second link block 164 is connected to, for after determination is successfully connected above-mentioned UE, sending instruction to above-mentioned master base station and disappearing Breath, wherein above-mentioned instruction message is used to indicate above-mentioned master base station notice source prothetic group station release and above-mentioned UE connection.

In an optional embodiment, above-mentioned third notice message can include at least one following information：For referring to Show the information for keeping above-mentioned UE to be connected with above-mentioned source prothetic group station；For indicating to keep above-mentioned UE with what above-mentioned source prothetic group station connected to determine When device configuration information.

In an optional embodiment, Figure 17 is the preferred structure block diagram of auxiliary base station change according to embodiments of the present invention (3), as shown in figure 17, said apparatus can also include：6th receiving module 172 and configuration module 174, below to the device Illustrate：

6th receiving module 172 is used to receive the request message from master base station；Configuration module 174, it is connected to above-mentioned Six receiving modules 172, for being that above-mentioned UE configures at least one following information according to above-mentioned request message：For indicating above-mentioned UE Keep the information being connected with source prothetic group station；The information of the timer configuration connected for indicating above-mentioned UE to keep with source prothetic group station.

In an optional embodiment, above-mentioned second link block 164 can determine at least one in the following manner It is successfully connected above-mentioned UE：Receive above-mentioned UE Physical Random Access Channel PRACH signal；Receive the upper of above-mentioned UE transmissions Row data；Receive the configured information for carrying above-mentioned UE marks that above-mentioned UE is sent.

Figure 18 is the structured flowchart (four) according to the auxiliary base station change of alternative embodiment of the present invention, as shown in figure 18, the dress Put including：4th receiving module 182, processing module 184, release module 186, the device is illustrated below：

4th receiving module 182, for receiving the 4th notification message of master base station transmission, wherein, above-mentioned 4th notice disappears Cease for notifying following information：User equipment (UE) keeps the connection with above-mentioned source prothetic group station during auxiliary base station change is carried out Notice；Processing module 184, above-mentioned 4th receiving module 182 is connected to, for keeping the connection with above-mentioned source prothetic group station and connecing Enter target prothetic group station；Release module 186, above-mentioned receiving module 184 is connected to, for discharging the connection with above-mentioned source prothetic group station.

In an optional embodiment, above-mentioned 4th notification message can include at least one following information：For referring to Show the information for keeping being connected with above-mentioned source prothetic group station；The timer connected for indicating holding with above-mentioned source prothetic group station matches somebody with somebody confidence Breath.

In an optional embodiment, above-mentioned processing module 184 and above-mentioned release module 186 can be in the following manner At least one keep and the connection at above-mentioned source prothetic group station and access target prothetic group station and release and the connection at above-mentioned source prothetic group station： After the configuration information of the above-mentioned timer for keeping connecting with above-mentioned source prothetic group station for instruction is received, start above-mentioned timing Device, and release and the connection of source secondary cell group after above-mentioned timer expiry；Down-going synchronous is completed with target main auxiliary cell Afterwards, release and the connection of source secondary cell group；Possess at first and send Physical Random Access Channel PRACH's on Target cell Kth before the subframe of ability₁Release and the connection of source secondary cell group in individual subframe, wherein, above-mentioned k₁The son made an appointment for agreement Frame position；Kth before the subframe that first possesses the ability that upward signal is sent on Target cell₂Individual subframe release and source The connection of secondary cell group, wherein, above-mentioned k₂The subframe position made an appointment for agreement.

In an optional embodiment, the duration of above-mentioned timer can include at least one of：From receiving source At the time of the network side configuration signal that base station is sent, the timing duration to network side configuration terminates；Receive and handle from UE At the time of complete network side configuration signal, the timing duration to network side configuration terminates.

In an optional embodiment, above-mentioned release module 186 can at least one in the following manner release with it is upper State the connection at source prothetic group station：Rebuild the packet data convergence protocol PDCP of secondary cell group entity；Rebuild the radio chains of secondary cell group Road controls RLC entity；Reset the entity of the media access control MAC of secondary cell group；Using the configuration of Target cell.

In an optional embodiment, after above-mentioned 4th receiving module 182 is accessed, said apparatus can be wrapped also Include：4th sending module, the 5th sending module, the 6th sending module, the device is illustrated below：

4th sending module, for sending signal on Physical Random Access Channel PRACH；5th sending module, is used for Send upstream data；6th sending module, for sending the configured information for the mark for carrying above-mentioned UE.

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can The program code for performing each step above to be arranged to storage to be used for.

Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage (Read- Only Memory, referred to as ROM), it is random access memory (Random Access Memory, referred to as RAM), mobile hard Disk, magnetic disc or CD etc. are various can be with the medium of store program codes.

Alternatively, in the present embodiment, processor performs each step above according to the program code stored in storage medium Suddenly.

Alternatively, the specific example in the present embodiment may be referred to described in above-described embodiment and optional embodiment Example, the present embodiment will not be repeated here.

Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.

The preferred embodiments of the present invention are above are only above, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims

A kind of 1. method of auxiliary base station change, it is characterised in that including：

Notify target prothetic group station, source prothetic group station and UE described in user equipment (UE) kept during auxiliary base station change is carried out with The connection at the source prothetic group station；

The instruction message from the target prothetic group station is received, wherein, the instruction message is used to indicate that the UE is successfully accessed The target prothetic group station；

According to the release of source prothetic group station and the connection of the UE described in the instruction message informing.
2. according to the method for claim 1, it is characterised in that notify the target prothetic group station, the source prothetic group station and UE described in the UE keeps the connection with the source prothetic group station to include during auxiliary base station change is carried out：

At least one following information is sent to the target prothetic group station, the source prothetic group station and the UE：

For the information for indicating to keep the UE to be connected with the source prothetic group station；

For the information for the timer configuration for indicating to keep the UE to connect with the source prothetic group station.
3. according to the method for claim 2, it is characterised in that methods described also includes：

The information for indicating trigger data forward pass is sent to the source prothetic group station.
4. according to the method in any one of claims 1 to 3, it is characterised in that methods described also includes：

Request message is sent to the target prothetic group station, wherein, the request message is used to ask the target prothetic group station as institute State UE and configure at least one following information：

The information being connected for indicating the UE to keep with source prothetic group station；

The information of the timer configuration connected for indicating the UE to keep with source prothetic group station.
A kind of 5. method of auxiliary base station change, it is characterised in that including：

The first notification message that master base station is sent is received, wherein, first notification message is used to notify following information：User sets Standby UE keeps the connection with source prothetic group station during auxiliary base station change is carried out；

Connection with the UE is kept according to first notification message；

The master base station is received it is determined that the UE is successfully accessed the second notification message that is sent behind target prothetic group station；

According to second notification message release and the connection of the UE.
6. according to the method for claim 5, it is characterised in that first notification message include following information at least it One：

For indicating to keep the information being connected with the UE；

For indicating to keep the information with the UE timer configurations being connected；

For indicating the information of trigger data forward pass.
7. according to the method for claim 6, it is characterised in that methods described includes at least one of：

Receive it is described be used to indicate the information of trigger data forward pass after, the process of trigger data forward pass, and keep with it is described UE connection；

It is being used to indicate to keep with after the information of the UE timer configurations being connected, starting the timer described in reception, And the connection with the UE is kept before the timer expiry.
A kind of 8. method of auxiliary base station change, it is characterised in that including：

The third notice message that master base station is sent is received, wherein, the third notice message is used to notify following information：User sets Standby UE keeps the connection with source prothetic group station during auxiliary base station change is carried out；

Connect the UE；

After it is determined that being successfully connected the UE, instruction message is sent to the master base station, wherein the instruction message is used to indicate The master base station notice source prothetic group station release and the connection of the UE.
9. according to the method for claim 8, it is characterised in that the third notice message include following information at least it One：

For the information for indicating to keep the UE to be connected with the source prothetic group station；

For the information for the timer configuration for indicating to keep the UE to connect with the source prothetic group station.
10. method according to claim 8 or claim 9, it is characterised in that methods described also includes：

Receive the request message from master base station；

It is that the UE configures at least one following information according to the request message：For indicating that the UE is kept and source prothetic group station The information of connection；The information of the timer configuration connected for indicating the UE to keep with source prothetic group station.
11. according to the method for claim 8, it is characterised in that it is determined that being successfully connected the UE includes at least one of：

Receive the Physical Random Access Channel PRACH of UE signal；

Receive the upstream data that the UE is sent；

Receive the configured information for carrying the UE marks that the UE is sent.
A kind of 12. method of auxiliary base station change, it is characterised in that including：

The 4th notification message that master base station is sent is received, wherein, the 4th notification message is used to notify following information：User sets Standby UE keeps the notice being connected with source prothetic group station during auxiliary base station change is carried out；

Keep the connection with the source prothetic group station and access target prothetic group station；

Release and the connection at the source prothetic group station.
13. according to the method for claim 12, it is characterised in that it is described 4th notice message package include following information at least it One：

For indicating to keep the information being connected with the source prothetic group station；

The configuration information of the timer connected for indicating holding with the source prothetic group station.
14. according to the method for claim 12, it is characterised in that keep the connection with the source prothetic group station and access target Prothetic group station and release and the connection at the source prothetic group station include at least one of：

After the configuration information of the timer for keeping connecting with the source prothetic group station for instruction is received, it is described fixed to start When device, and release and the connection of source secondary cell group after the timer expiry；

After down-going synchronous is completed with target main auxiliary cell, release and the connection of source secondary cell group；

Kth before the subframe that first possesses the ability that Physical Random Access Channel PRACH is sent on Target cell₁Height Release and the connection of source secondary cell group on frame, wherein, the k₁The subframe position made an appointment for agreement；

Kth before the subframe that first possesses the ability that upward signal is sent on Target cell₂Individual subframe release is auxiliary small with source The connection of district's groups, wherein, the k₂The subframe position made an appointment for agreement.
15. the method according to claim 13 or 14, it is characterised in that the duration of the timer include it is following at least it One：

Since at the time of receiving the network side configuration signal of source base station transmission, the timing duration to network side configuration terminates；

Since at the time of UE is received and has handled network side configuration signal, the timing duration to network side configuration terminates.
16. according to the method for claim 12, it is characterised in that release and the connection at the source prothetic group station are included below extremely It is one of few：

Rebuild the packet data convergence protocol PDCP of secondary cell group entity；

Rebuild the wireless spread-spectrum technology RLC of secondary cell group entity；

Reset the entity of the media access control MAC of secondary cell group；

Using the configuration of Target cell.
17. according to the method for claim 12, it is characterised in that after the target prothetic group station is accessed, methods described Also include：

Signal is sent on Physical Random Access Channel PRACH；

Send upstream data；

Send the configured information for the mark for carrying the UE.
A kind of 18. device of auxiliary base station change, it is characterised in that including：

First notification module, for notifying target prothetic group station, UE is carrying out prothetic group station described in source prothetic group station and user equipment (UE) The connection with the source prothetic group station is kept during change；

First receiving module, for receiving the instruction message from the target prothetic group station, wherein, the instruction message is used to refer to Show that the UE is successfully accessed the target prothetic group station；

Second notification module, for the release of source prothetic group station and the connection of the UE according to the instruction message informing.
19. device according to claim 18, it is characterised in that first notification module includes transmitting element, is used for At least one following information is sent to the target prothetic group station, the source prothetic group station and the UE：

For the information for indicating to keep the UE to be connected with the source prothetic group station；

For the information for the timer configuration for indicating to keep the UE to connect with the source prothetic group station.
20. device according to claim 19, it is characterised in that the transmitting element is additionally operable to send out to the source prothetic group station Send the information for indicating trigger data forward pass.
21. the device according to any one of claim 18 to 20, it is characterised in that described device also includes：

Second sending module, for sending request message to the target prothetic group station, wherein, the request message is used to ask institute State target prothetic group station and configure at least one following information for the UE：

The information being connected for indicating the UE to keep with source prothetic group station；

The information of the timer configuration connected for indicating the UE to keep with source prothetic group station.
A kind of 22. device of auxiliary base station change, it is characterised in that including：

Second receiving module, for receiving the first notification message of master base station transmission, wherein, first notification message is used to lead to Know following information：User equipment (UE) keeps the connection with source prothetic group station during auxiliary base station change is carried out；

Module is kept, for keeping the connection with the UE according to first notification message；

3rd receiving module, for receiving the master base station it is determined that the UE is successfully accessed sent behind target prothetic group station second Notification message；

First link block, for according to second notification message release and the connection of the UE.
23. device according to claim 22, it is characterised in that first notification message include following information at least it One：

For indicating to keep the information being connected with the UE；

For indicating to keep the information with the UE timer configurations being connected；

For indicating the information of trigger data forward pass.
24. device according to claim 23, it is characterised in that described device also includes at least one of：

Trigger module, for receive it is described be used to indicate the information of trigger data forward pass after, the process of trigger data forward pass, And keep the connection with the UE；

Starting module, for being used to indicate to keep with after the information of the UE timer configurations being connected, opening described in reception The timer is moved, and the connection with the UE is kept before the timer expiry.
A kind of 25. device of auxiliary base station change, it is characterised in that including：

4th receiving module, for receiving the third notice message of master base station transmission, wherein, the third notice message is used to lead to Know following information：User equipment (UE) keeps the connection with source prothetic group station during auxiliary base station change is carried out；

Second link block, for connecting the UE；

First sending module, for after determination is successfully connected the UE, instruction message being sent to the master base station, wherein described Indicate that message is used to indicate the master base station notice source prothetic group station release and the connection of the UE.
26. device according to claim 25, it is characterised in that the third notice message include following information at least it One：

For the information for indicating to keep the UE to be connected with the source prothetic group station；

For the information for the timer configuration for indicating to keep the UE to connect with the source prothetic group station.
27. the device according to claim 25 or 26, it is characterised in that described device also includes：

6th receiving module, for receiving the request message from master base station；

Configuration module, for being that the UE configures at least one following information according to the request message：For indicating the UE Keep the information being connected with source prothetic group station；The information of the timer configuration connected for indicating the UE to keep with source prothetic group station.
28. device according to claim 25, it is characterised in that second link block is true by least one of Surely it is successfully connected the user equipment (UE)：

Receive the Physical Random Access Channel PRACH of UE signal；

Receive the upstream data that the UE is sent；

Receive the configured information for carrying the UE marks that the UE is sent.
A kind of 29. device of auxiliary base station change, it is characterised in that including：

5th receiving module, for receiving the 4th notification message of master base station transmission, wherein, the 4th notification message is used to lead to Know following information：User equipment (UE) keeps the notice being connected with source prothetic group station during auxiliary base station change is carried out；

Processing module, for keeping the connection with the source prothetic group station and accessing target prothetic group station；

Release module, for discharging the connection with the source prothetic group station.
30. device according to claim 29, it is characterised in that it is described 4th notice message package include following information at least it One：

For indicating to keep the information being connected with the source prothetic group station；

The configuration information of the timer connected for indicating holding with the source prothetic group station.
31. device according to claim 29, it is characterised in that the processing module and the release module pass through following At least one keep and the connection at the source prothetic group station and access target prothetic group station and release and the connection at the source prothetic group station：

After the configuration information of the timer for keeping connecting with the source prothetic group station for instruction is received, it is described fixed to start When device, and release and the connection of source secondary cell group after the timer expiry；

After down-going synchronous is completed with target main auxiliary cell, release and the connection of source secondary cell group；

Kth before the subframe that first possesses the ability that Physical Random Access Channel PRACH is sent on Target cell₁Height Release and the connection of source secondary cell group on frame, wherein, the k₁The subframe position made an appointment for agreement；

Kth before the subframe that first possesses the ability that upward signal is sent on Target cell₂Individual subframe release is auxiliary small with source The connection of district's groups, wherein, the k₂The subframe position made an appointment for agreement.
32. the device according to claim 30 or 31, it is characterised in that the duration of the timer include it is following at least it One：

Since at the time of receiving the network side configuration signal of source base station transmission, the timing duration to network side configuration terminates；

Since at the time of UE is received and has handled network side configuration signal, the timing duration to network side configuration terminates.