CN107690163A

CN107690163A - Cell switching method and device

Info

Publication number: CN107690163A
Application number: CN201610629464.8A
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: 2018-02-13
Also published as: WO2018024212A1

Abstract

The invention provides a kind of cell switching method and device, this method includes：Receive the configuration message for indicating progress cell switching；According to configuration message keep and the connection of cell-of-origin and do not obtain it is synchronous with Target cell in the case of synchronize with Target cell；Under preset trigger condition, disconnect the connection with cell-of-origin and access Target cell.Pass through the present invention, solve the problems, such as that user equipment and source base station disconnect too early or too late, more data outage times can be caused by disconnecting the connection with source base station too early, disconnection and the connection of source base station too late can cause more Radio Link Failure, reach the more accurate and reasonably interruption with source base station, the realization of data outage is reduced, also avoids the generation of Radio Link Failure.And then the effect for reducing data outage and avoiding Radio Link Failure from occurring.

Description

Cell switching method and device

Technical field

The present invention relates to the communications field, in particular to a kind of cell switching method and device.

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 PCell or additionally included One or more SCell, SCG include a main auxiliary cell (Primary Secondary Cell, referred to as PSCell) or Additionally include one or more secondary cells (Secondary Cell, referred to as Scell).Management MCG base station is referred to as master base station (Master eNB, referred to as MeNB), and the base station for managing SCG is referred to as prothetic group station (Secondary eNB, referred to as SeNB).

It is as shown in Figure 1 SCG bearer frameworks：UE has independent carrying, user equipment (User in MeNB and SeNB Equipment, referred to as UE) on each enode b (B Evolved Node, referred to as eNB) there is independent bag number According to convergence protocol (Packet Data Convergence Protocol, referred to as PDCP) entity.Above and below same carrying It is diverted on MeNB and SeNB and transmits during row carrying data difference.It is illustrated in figure 2 Split bearer frameworks：

Connections of the UE on MeNB can have independent carrying.UE is by the same EPS on MeNB in SeNB connection A part of data distribution of carrying to transmitting on SeNB, the evolution packet system (Evolved Packet System, referred to as EPS) carry PDCP entities still in MeNB, and be on SeNB have independent wireless spread-spectrum technology (Radio Link Control, Referred to as RLC) entity.

Mobile process brief introduction：UE mobile process mainly includes following 3 kinds：Single connection switching,

SeNB/SCG changes, dual link switching under dual link.Single connection switches：UE only has company with a source base station Connect, at this time UE have received base station transmission switching command (i.e. RRCConnectionReconfiguration message packages contain MobilityControlInfo information units), UE behavior mainly includes following 3 stages：

1st stage：Down-going synchronous and configuration are applied：Stop radio link problem detection (to stop and/or do not start timing Device t310/t312)；Start the timer (i.e. t304) of handover failure detection；Stop reporting for UE auxiliary informations and (pass through stopping T307 stops reporting for SidelinkUEInformation message)；(Primary Cell, it is referred to as with target main plot Pcell down-going synchronous) is carried out；For particular type UE (low complex degree (the Bandwidth reduced Low that such as bandwidth reduces Complexity, referred to as BL) UE or UE in coverage enhancements (Coverage Enhancement, referred to as CE)) need to obtain Target PCell Master Information Block (Master Information Block, referred to as MIB)；Reset UE medium education (Medium Access Control, referred to as MAC) entity；Rebuild all radio bearers (Radio Bearer, referred to as RB) PDCP entities；Rebuild all RB RLC entities；Deactivate Scell；Using new UE ID, (i.e. cell-radio network is marked temporarily Know Cell Radio Network Temporary Identifier, referred to as C-RNTI)；If being configured with fullConfig, FullConfig configuration flows corresponding to this execution；Perform the old configuration of the deletion in handoff procedure and apply new configuration flow；If The related content in RRCConnectionReconfigurationComplete message is put, including：Radio Link Failure (Radio Link Failure, referred to as RLF) information can use instruction, multicast broadcast multimedia service (Multimedia Broadcast and Multicast Service, referred to as MBSFN) record metrical information can use instruction, record measurement letter Breath can use instruction, and failure information is established in connection can use instruction；RRCConnectionReconfigurationComplete is sent out It is sent to underlying physical.

2nd stage：Uplink synchronous：UE MAC layer entity is to Target cell initiating random access procedure, for based on competition Random access procedure UE (receive msg4) after contention resolved then Stochastic accessing success, for non-competing Stochastic accessing Then Stochastic accessing success that process UE (receives msg2) after network side feedback is received.

3rd stage：Processing after being successfully accessed：UE is performed with descending after MAC layer successfully completes random access procedure For：Stop handover failure detection (stopping timer T304).PCell System Frame Number (System whether is obtained according to UE Frame Number, referred to as SFN), corresponding configure is used step by step.Including：Before PCell SFN is obtained, using channel Quality instruction (Channel Quality Indicator, referred to as CQI)/dispatch request (Scheduling Request, letter Referred to as SR)/detection reference signal (Sounding Reference Signal, referred to as SRS) configuration in do not need UE know mesh Mark PCell SFN part；After PCell SFN is obtained, using measurement and radio-resource-configuration (such as measurement interval, cycle Property CQI report, SR configuration, SRS configuration) in need to know UE targets PCell SFN configuration.

Report associated ancillary information.Including：Like the UE reported for being configured with IDC and power, can be with initiating equipment class Coexist (In-Device Coexistence, referred to as IDC) report with UE auxiliary informations (comprising power hobby relevant information) on Report；If target PCell broadcast system informations block (SystemInformation Block, referred to as SIB15), UE can more than Report MBMS interest messages；If target PCell broadcast SIB18, UE can with reporting equipment to equipment (Device to Device, Referred to as D2D) communication context related messages；If target PCell broadcasts SIB19, UE can report D2D to find in related news Hold.

SeNB/SCG is changed：UE is configured with DC, and at this time UE have received the SCG change orders (SeNB/ of master base station transmission SCG change) (i.e. RRCConnectionReconfiguration message packages information containing mobilityControlInfoSCG Unit), UE behavior is as follows：

1st stage：Down-going synchronous and configuration are applied：Reset SCG MAC；For SCG DRB, PDCP entities and SCG are rebuild RLC entities；For split DRB, perform PDCP data recoveries and rebuild SCG RLC entities；It is configured to change for MCG DRB Into SCG DRB, PDCP entities and MCG RLC entities are rebuild；For SCG SCell (except PSCell), it is arranged to deactivate shape State；According to config update SCG/SeNB related key and security algorithm；Using SCG exclusive radio-resource-configuration；To working as SCG/Split DRB configured preceding UE are reconfigured according to configuration information；According to configuration, SCG SCell releases are performed； According to configuration, PSCell addition and modification are performed；According to configuration, SCG SCell additions and modification are performed；It is real to configure bottom Body；Transmitted for SCG DRB or the split DRB of hang-up SCG, recover its SCG transmission；Stop radio link problem detection (stop and/or do not start timer T313)；Start the detection (starting timer T307) of SCG change failures；With target PSCell is synchronized.

2nd stage：Uplink synchronous

Start the random access procedure for target PSCell.Random access procedure is the same as the uplink synchronous process in above-mentioned.

3rd stage：Processing after being successfully accessed：UE is performed with descending after MAC layer successfully completes random access procedure For：Stop SCG changes failure detection (stopping timer T307)；PSCell SFN whether is obtained according to UE, is used step by step Corresponding configuration.Including：Before PSCell SFN is obtained, UE is not needed to know target PCell in being configured using CQI/SR/SRS SFN part；After PSCell SFN is obtained, using measurement and radio-resource-configuration, (as periodicity CQI is reported, SR matches somebody with somebody Put, SRS configuration) in need to know UE targets PCell SFN configuration.

Dual link switches：UE is configured with DC, and at this time UE have received the switching command requirement reservation UE of master base station transmission SCG (i.e. RRCConnectionReconfiguration message packages containing mobilityControlInfo and MobilityControlInfoSCG information units), UE behavior is as follows：

1st stage：Down-going synchronous and configuration are applied：" the 1st stage in switching with single connection：Down-going synchronous and configuration should With ", the configuration for SCG parts is then using " the 1st stage in being changed with SCG：Down-going synchronous and configuration are applied ".

2nd stage：Uplink synchronous：The uplink synchronous includes and PCell uplink synchronous the (the in switching with single connection the " the 2nd Stage：Uplink synchronous ") and with PSCell uplink synchronous (" the 2nd stage in being changed with SCG：Uplink synchronous ").This is up same Step process is that PCell and PSCell is independently carried out.

3rd stage：Processing after being successfully accessed：Being somebody's turn to do " processing after being successfully accessed " includes：PCell be successfully accessed after place Reason (" the 3rd stage in switching with single connection：Processing after being successfully accessed ") and PSCell be successfully accessed after processing (same to SCG " the 3rd stage in change：Processing after being successfully accessed ").PCell be successfully accessed after processing and after PSCell is successfully accessed Handle as processing procedure independently.

FullConfig configuration flows：UE is after the fullConfig information of network side configuration is received, UE behavior It is as follows：Removing/release UE exclusive radio configuration, except：MCG C-RNTI, MCG security configuration, RB PDCP/RLC/ are patrolled Collect the configuration of channel, logged measurement (record measurement) configuration.(received for handoff procedure MobilityControlInfo), all wireless universal configurations of release/removing, for error detection function (T310/T311/ N310/N311 default value as defined in agreement) is used.For non-switching process, for error detection function (T301/T310/ T311/N310/N311 default value as defined in agreement) is used.Configured using the physical channel of acquiescence；Using the semi-continuous tune of acquiescence Spend (Semi-Persistent scheduling, referred to as SPS) configuration；Configured using the MAC of acquiescence；Wirelessly held for signaling Carry (Signaling Radio Bearer, referred to as SRB) and use default configuration as defined in agreement.If wrapped in RRC configurations Evolution packet system (Evolved Packet System, referred to as EPS) bearer ID (i.e. eps- are contained BearerIdentity), then Data Radio Bearer (Data Radio corresponding to the current EPS bearer ID of UE are discharged Bearer, referred to as DRB), but retain the EPS bearer ID.If EPS bearer ID current UE are not comprised in In the wireless heterogeneous networks (Radio Resource Control, referred to as RRC) configuration, then the DRB is discharged.

The old configuration of deletion and the new configuration flow of application in handoff procedure：UE is after switching command is received, for its deletion The old new configuration of configuration and application performs following behavior：According to general and exclusive radio-resource-configuration, UE each entity is carried out Corresponding configuration；According to security configuration, UE safe key and security algorithm are updated；According to configuration, perform SCell addition/ Modification/deletion；Configured according to SCG, perform reconfiguring for SCG；Using the SIB1 of configuration；Perform the related measurement configuration stream of switching Journey；Measurement configuration in switching command performs measurement；Delete disabled measurement ID；Delete closure signing group (Closed Subscriber Group, referred to as CSG) related measured close to instruction；Other classes are applied in configuration in switching command The configuration of type, including：Close to instruction measurement configuration, positional information configuration is obtained, IDC reports configuration, and power hobby reports configuration； Configuration in switching command is using configuration related D2D；Configuration employing wireless LAN in switching command The related configuration of (Wireless Local Area Network, referred to as WLAN) data distribution；Discharge LTE and WLAN polymerizations (LTE-WLAN Aggregation, referred to as LWA) and LTE and WLAN pass through internet protocol security (Internet Protocol Security, referred to as IPsec) tunnel is in wireless layers of polymer (LTE-WLAN Radio Level Integration with IPsec Tunnel, referred to as LWIP) relevant configuration；Configuration application in switching command The configuration of WLAN business transfer correlation；Configuration application LWA and LWIP relevant configuration in switching command.

Switch related measurement configuration flow UE after switching command is received, performed for the related configuration of its switching following Behavior：Periodically measurement is deleted to report；Switch for alien frequencies, be switching target frequency for measurement object, will be associated with The measurement ID of source frequency is associated with the target frequency again, and the measurement ID for being associated with target frequency is associated with into source frequency again. For other situations, then the measurement related to the source frequency is deleted；Delete all measurements and report configuration；Dwelling period reports fixed When device and system information obtain timer (T321)；Discharge measurement interval；

Keep the switching method of source and target cell connection.It is illustrated in figure 3 the flow chart of signaling switching：Due to current LTE system disconnects using elder generation in cell-of-origin, then establishes switching method (the i.e. break- of connection in Target cell again Before-make, first interrupt and establish afterwards).The transmitting-receiving that business datum can be produced is interrupted.Therefore 3GPP discussion group provides new side Case is used to keep connections (i.e. make-before-break, first establish afterwards interrupt) of the UE in cell-of-origin and Target cell simultaneously.With Interrupt latency is changed in reducing UE lateral incisions.That is UE remains in that the connection with source base station after switching command is received, in access mesh Mark the front or rear connection just disconnected with source base station of base station.Further, network side can not trigger UE in handoff procedure Random access procedure, and up transmission resource (the shared letter of such as physical uplink in switching command to UE configuration Target cells Road (Physical Uplink Shared Channel, referred to as PUSCH) resource), so as to which UE can be directly in the up hair Resource is sent directly to carry out upstream data transmission in Target cell.

The problem of being disconnected too early or too late for user equipment and source base station, i.e., disconnect and the company of source base station too early More data outage times can be caused by connecing, and disconnection and the connection of source base station too late can cause more Radio Link Failure, Effective solution is not proposed in correlation technique.

The content of the invention

The embodiments of the invention provide a kind of cell switching method and device, at least to solve user equipment in correlation technique The problem of being disconnected too early or too late with source base station, i.e., disconnect too early and when the connection of source base station can cause more data outages Between, more Radio Link Failure can be caused by disconnecting the connection with source base station too late.

According to one embodiment of present invention, there is provided a kind of cell switching method, including：Receive for indicating that progress is small The configuration message of area's switching；Kept according to the configuration message and the connection of cell-of-origin and synchronous with Target cell not obtaining In the case of synchronized with Target cell；Under preset trigger condition, disconnect the connection with the cell-of-origin and access the mesh Mark cell.

Alternatively, the preset trigger condition includes at least one of：Complete the down-going synchronous with the Target cell； The connection of cell-of-origin will be disconnected by completing k-th of subframe determination of the protocol conventions after the down-going synchronous with the Target cell, its In, the k is the numerical value of protocol conventions；In first transmissible ascending physical signal RACH of the Target cell K-th of subframe before (Physical Random Access Channel, referred to as PRACH) resource determines to disconnect cell-of-origin Connection, wherein, the k be protocol conventions numerical value；In first transmissible up transmission resource of the Target cell Preceding k-th of subframe determination will disconnect the connection of cell-of-origin, wherein, the k is the numerical value of protocol conventions；Disconnect and source main plot Group MCG connection.

Alternatively, when the configuration message includes being used to indicate to carry out the switching command of single connection cell switching, according to The switching command keeps the connection with the cell-of-origin and includes following operation extremely with Target cell progress down-going synchronous It is one of few：Start handover failure detection processing；Stop auxiliary information reporting, wherein, the auxiliary information include it is following at least One of：IDC auxiliary informations, power preference information, multimedia broadcast multicast coexists in device-to-device D2D auxiliary informations, equipment class Service MBMS interest informations；Down-going synchronous is carried out with target main plot；Obtain the Master Information Block MIB of target main plot；Obtain mesh Mark the Stochastic accessing configuration of main plot；Obtain the configuration of the up transmission resource of target main plot.

Alternatively, when the configuration message includes being used to indicate to carry out the switching command of single connection cell switching, disconnect Connection with the cell-of-origin includes at least one of：Stop radio link problem detection；Reset the media of user equipment (UE) Access control MAC entity；Rebuild all radio bearer RB packet data convergence protocol PDCP entities；Rebuild all radio bearer RB Wireless spread-spectrum technology RLC entities；Deactivate secondary cell；Using new terminal iidentification；FullConfig is configured entirely when being configured with When, full configuration fullConfig configuration flows corresponding to execution；Perform the old configuration of deletion and the new configuration of application in handoff procedure Flow；Wireless heterogeneous networks are set to connect again with completion RRCConnectionReconfigurationComplete message；Will Wireless heterogeneous networks connection is sent to bottom reality with completion RRCConnectionReconfigurationComplete message again Body.

Alternatively, when the configuration message includes being used to indicate to carry out the switching command of single connection cell switching, disconnected Open the connection with the cell-of-origin and access after the Target cell, methods described also includes：To target main plot initiate with Machine access procedure；And/or the transmission of upstream data is initiated according to the up transmission resource of the target main plot of configuration.

Alternatively, after it is determined that being successfully accessed the target main plot, methods described also includes at least one of：Stop Only handover failure detection；Judge whether to obtain the system frame number SFN of the Target cell, and according to corresponding to using judged result Measurement and/or radio-resource-configuration；Report auxiliary information.

Optionally it is determined that being successfully accessed the condition of the target main plot includes at least one of：With the target master The Stochastic accessing success of cell；Start to send first upstream data on the target main plot；Receive from network side First is properly received instruction, wherein, described first is properly received instruction, for indicating that the network side is successfully received described First upstream data sent on target main plot；First transmissible up transmission resource in the target main plot Preceding k-th of subframe determination will disconnect the connection of cell-of-origin, wherein, the k is the numerical value of protocol conventions；It is small in the target master Start to send handoff completion message in area；Receive second from network side and be properly received instruction, wherein, described second successfully connects Instruction is received to be used to indicate that the network side is properly received the handoff completion message sent on the target main plot；In the mesh K-th of subframe before first transmittable handoff completion message subframe of main plot is marked to determine to disconnect the connection of cell-of-origin；Receive The ascending resource release instruction of arrival automatic network side；Receive and be successfully accessed instruction from network side.

Alternatively, when the SCG that the configuration message includes being used to indicate to carry out secondary cell group SCG change changes order When, the connection of order holding and the source SCG cells is changed according to the SCG and synchronizes bag with the target SCG cells Include at least one following operation：Obtain the Stochastic accessing configuration of target main auxiliary cell；Obtain the up of target main auxiliary cell Send the configuration of resource；Down-going synchronous is carried out with target main auxiliary cell；It (can be fixed to start SCG change failure detection processing When device).

Alternatively, when the SCG that the configuration message includes being used to indicate to carry out secondary cell group SCG change changes order When, disconnecting the connection with the cell-of-origin includes at least one of：Reset SCG media access control MAC entity；For SCG Data Radio Bearer DRB, rebuild packet data convergence protocol PDCP entities and SCG wireless spread-spectrum technology RLC entities；It is right In the DRB of segmentation, perform PDCP data recoveries and rebuild SCG wireless spread-spectrum technology RLC entities；For main plot group MCG's Data Radio Bearer DRB is configured to be altered to SCG DRB, rebuilds PDCP entities and MCG wireless spread-spectrum technology RLC entities；It is right In SCG secondary cell SCell, deactivation status is arranged to；Update SCG key and security algorithm；Using SCG exclusive nothing Line resource distribution；Re-start and match somebody with somebody according to the configured SCG of user equipment (UE) or partition data radio bearer Split DRB information Put；Perform SCG secondary cell SCell release；Perform main auxiliary cell PSCell addition and modification；Configure underlying physical； The Data Radio Bearer Split DRB of Data Radio Bearer DRB or segmentation for the SCG of hang-up SCG transmission, recover institute State SCG transmission；Stop the detection of SCG radio link problems.

Alternatively, when the SCG that the configuration message includes being used to indicate to carry out secondary cell group SCG change changes order When, after the connection disconnected with the cell-of-origin and accessing the Target cell, methods described also includes：To target main auxiliary Cell initiating random access procedure；And/or upstream data is initiated according to the up transmission resource of the target main auxiliary cell of configuration Transmission.

Alternatively, after it is determined that being successfully accessed the target main auxiliary cell, methods described also include it is following at least it One：Stop SCG change failure detections；Judge whether to obtain the system frame number SFN of the target main auxiliary cell, and according to judgement As a result measurement and/or radio-resource-configuration corresponding to using.

Optionally it is determined that being successfully accessed the condition of the target main auxiliary cell includes at least one of：With the mesh Mark the Stochastic accessing success of main auxiliary cell；Start to send first upstream data in the target main auxiliary cell；Receive The 3rd from network side is properly received instruction, wherein, the described 3rd is properly received instruction, for indicating the network side success Receive first upstream data sent in the target main auxiliary cell；Receive the ascending resource release from network side Instruction；Receive and be successfully accessed instruction from network side；Before first transmissible ascending resource of target main auxiliary cell K-th of subframe determine to disconnect the connection of cell-of-origin, wherein, the k is the numerical value of protocol conventions.

According to another embodiment of the invention, there is provided a kind of cell switching device, including：Receiving module, for connecing Receive the configuration message for indicating progress cell switching；Processing module, for being kept and cell-of-origin according to the configuration message Connect and do not obtain it is synchronous with Target cell in the case of synchronize with Target cell；Module is disconnected, for being touched predetermined Under the conditions of hair, disconnect the connection with the cell-of-origin and access the Target cell.

Alternatively, the preset trigger condition includes at least one of：Complete the down-going synchronous with the Target cell； K-th of subframe of the protocol conventions after the down-going synchronous with the Target cell is completed, wherein, the k is the number of protocol conventions Value；K-th of subframe before first transmissible ascending physical signal RACH PRACH resource of the Target cell, Wherein, the k is the numerical value of protocol conventions；Kth before first transmissible up transmission resource of the Target cell Individual subframe, wherein, the k is the numerical value of protocol conventions；Disconnect the connection with source main plot group MCG.

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 user equipment (UE) is when keeping the connection with cell-of-origin, under preset trigger condition, disconnect Connection with cell-of-origin simultaneously accesses Target cell, therefore, can solve user equipment and be disconnected too early or too late with source base station Problem, i.e., more data outage times can be caused by disconnecting the connection with source base station too early, disconnection too late and the company of source base station More Radio Link Failure can be caused by connecing, and reached the more accurate and reasonably interruption with source base station, reduced data outage Realize, also avoid the generation of Radio Link Failure.

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 Organization Chart of the SCG bearer in correlation technique；

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

Fig. 3 is the flow chart of the hand off signaling in correlation technique；

Fig. 4 is the hardware block diagram of the mobile terminal of the cell switching method of the embodiment of the present invention；

Fig. 5 is method flow diagram according to embodiments of the present invention；

Fig. 6 is the schematic diagram of single connection switching according to embodiments of the present invention；

Fig. 7 is the flow chart of the dual link switching in the specific embodiment of the invention；

Fig. 8 is the structured flowchart of cell switching device according to embodiments 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. 4 is the mobile terminal of the cell switching method of the embodiment of the present invention Hardware block diagram.As shown in figure 4, mobile terminal 40 can include one or more (one is only shown in Fig. 4) processors 402 (processor 402 can include but is not limited to Micro-processor MCV or PLD FPGA etc. processing unit), for depositing Store up the memory 404 of data and the transmitting device 406 for communication function.It will appreciated by the skilled person that figure Structure shown in 4 is only to illustrate, and it does not cause to limit to the structure of above-mentioned electronic installation.For example, mobile terminal 40 can also wrap Include more either less components than shown in Fig. 4 or there is the configuration different from shown in Fig. 4.

Memory 404 can be used for the software program and module of storage application software, such as the cell in the embodiment of the present invention Programmed instruction/module corresponding to switching method, processor 402 by operation be stored in software program in memory 404 and Module, so as to perform various function application and data processing, that is, realize above-mentioned method.Memory 404 may include at a high speed with Machine memory, may also include nonvolatile memory, as one or more magnetic storage device, flash memory or other it is non-easily The property lost solid-state memory.In some instances, memory 404 can further comprise depositing relative to processor 402 is remotely located Reservoir, these remote memories can pass through network connection to mobile terminal 40.The example of above-mentioned network is including but not limited to mutual Networking, intranet, LAN, mobile radio communication and combinations thereof.

Transmitting device 406 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 40 provide.In an example, transmitting device 406 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 406 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 cell switching method for running on above-mentioned mobile terminal is provided in the present embodiment, and Fig. 5 is according to this hair The method flow diagram of bright embodiment, as shown in figure 5, the flow comprises the following steps：

Step S502, receive the configuration message for indicating progress cell switching；

Step S504, kept and the connection of cell-of-origin and synchronous with Target cell not obtaining according to above-mentioned configuration message In the case of synchronized with Target cell；

Step S506, under preset trigger condition, disconnect the connection with above-mentioned cell-of-origin and access above-mentioned Target cell.

By above-mentioned steps, because user equipment (UE) is when keeping the connection with cell-of-origin, under preset trigger condition, break Drive the connection with cell-of-origin and access Target cell, therefore, can solve user equipment and source base station and disconnect too early or too late The problem of, i.e., more data outage times can be caused with the connection of source base station by disconnecting too early, disconnection too late and source base station Connection can cause more Radio Link Failure, reach the more accurate and reasonably interruption with source base station, reduce data outage Realization, also avoid the generation of Radio Link Failure.

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

In an optional embodiment, above-mentioned preset trigger condition can include at least one of：Complete with it is above-mentioned The down-going synchronous of Target cell；K-th of subframe for completing the protocol conventions after the down-going synchronous with above-mentioned Target cell determines to want The connection of cell-of-origin is disconnected, wherein, above-mentioned k is the numerical value of protocol conventions；At first of above-mentioned Target cell it is transmissible on K-th of subframe determination before row Physical Random Access Channel PRACH resources will disconnect the connection of cell-of-origin, wherein, above-mentioned k is association Discuss the numerical value of agreement；K-th of subframe before first transmissible up transmission resource of above-mentioned Target cell determines to break The connection for cell of increasing income, wherein, above-mentioned k is the numerical value of protocol conventions；Disconnect the connection with source main plot group MCG.

In an optional embodiment, when above-mentioned configuration message includes being used to indicate the switching command for carrying out cell switching When, the connection with above-mentioned cell-of-origin is kept according to above-mentioned switching command and carries out down-going synchronous including following with above-mentioned Target cell At least one operation：Start handover failure detection processing；Stop auxiliary information reporting, wherein, above-mentioned auxiliary information include with It is at least one lower：IDC auxiliary informations, power preference information, multi-media broadcast coexists in device-to-device D2D auxiliary informations, equipment class Broadcast multicast service MBMS interest informations；Down-going synchronous is carried out with target main plot；Obtain the Master Information Block MIB of target main plot； Obtain the Stochastic accessing configuration of target main plot；Obtain the configuration of the up transmission resource of target main plot.In the present embodiment, Start handover failure detection processing, can be trigger handover failure detection timer, i.e. t304；Stop reporting for auxiliary information Including：Stop reporting for SildelinkUEInformation message by triggering t307, stop reporting for IDC auxiliary informations； Stop reporting for power preference information；Stop reporting for MBMS interest informations；For certain types of UE (such as BL UE or UE in CE acquisition target Pcell MIB) is needed；The configuration of the up transmission resource of target main plot is obtained, wherein, the up transmission Resource can be PUSCH resources.Above-mentioned Stochastic accessing configuration and the configuration of descending transmission resource can be carried in message is configured.

In an optional embodiment, when above-mentioned configuration message includes being used to indicate the switching command for carrying out cell switching When, disconnecting the connection with above-mentioned cell-of-origin includes at least one of：Stop radio link problem detection；Reset user equipment (UE) Media access control MAC entity；Rebuild all radio bearer RB packet data convergence protocol PDCP entities；Rebuild all wireless Carry RB wireless spread-spectrum technology RLC entities；Deactivate secondary cell；Using new terminal iidentification；When being configured with full configuration During fullConfig, fullConfig configuration flows are configured corresponding to execution entirely；Perform handoff procedure in deletion it is old configuration and Using new configuration flow；Wireless heterogeneous networks are set to connect again with completion RRCConnectionReconfigurationComplete message；By wireless heterogeneous networks connection again with completion RRCConnectionReconfigurationComplete message is sent to underlying physical.In the present embodiment, stop wireless Link problem detection is to stop and/or do not start timer t310/t312；Using new terminal iidentification (UE ID) be cell without Line Network Temporary Identifier (CellRadioNetworkTemporaryIdentifier, referred to as C-RNIT)； Related content in RRCConnectionReconfigurationComplete message includes：RLF information can use instruction, MBSFN record metrical information can use instruction, and record metrical information can use instruction, and failure information is established in connection can use instruction.

In an optional embodiment, when above-mentioned configuration message includes being used to indicate the switching command for carrying out cell switching When, after the connection with above-mentioned cell-of-origin is disconnected, the above method also includes：To target main plot initiating random access procedure； And/or the transmission of upstream data is initiated according to the up transmission resource of the target main plot of configuration.

In an optional embodiment, after it is determined that being successfully accessed above-mentioned target main plot, the above method also includes At least one of：Stop handover failure detection；Judge whether to obtain the system frame number SFN of above-mentioned Target cell, and according to sentencing Disconnected result uses corresponding measurement and/or radio-resource-configuration；Report auxiliary information.In the present embodiment, handoff failure is stopped Detection stops timer t304；Judge whether to obtain the system frame number SFN of above-mentioned Target cell, obtain PCell SFN Afterwards, using measurement and radio-resource-configuration (such as measurement interval, periodicity CQI are reported, SR configuration, SRS configuration) in need to know UE targets PCell SFN configuration；Auxiliary information is reported to include：, can be with for being configured with IDC and the power UE that reports of hobby Initiation IDC reports to be reported with UE auxiliary informations (comprising power hobby relevant information)；If target PCell broadcasts SIB15, UE can To report MBMS interest messages；If target PCell broadcasts SIB18, UE can report D2D communication context related messages；If Target PCell broadcasts SIB19, and UE can report D2D to find context related messages.

In an optional embodiment, it is determined that be successfully accessed above-mentioned target main plot condition include it is following at least it One：With the Stochastic accessing success of above-mentioned target main plot；Start to send first upstream data on above-mentioned target main plot；Receive The first of arrival automatic network side is properly received instruction, wherein, above-mentioned first is properly received instruction, for indicate above-mentioned network side into Work(receives first upstream data sent on above-mentioned target main plot；First in above-mentioned target main plot is transmittable Up transmission resource before k-th of subframe determine to disconnect the connection of cell-of-origin, wherein, above-mentioned k is the numerical value of protocol conventions； Start to send handoff completion message on above-mentioned target main plot；Receive second from network side and be properly received instruction, wherein, Above-mentioned second, which is properly received instruction, is used for that to indicate that above-mentioned network side is properly received the switching sent on above-mentioned target main plot complete Into message；K-th of subframe before first transmittable handoff completion message subframe of above-mentioned target main plot determines to disconnect The connection of cell-of-origin；Receive the ascending resource release instruction from network side；Receive and be successfully accessed instruction from network side.

In an optional embodiment, when above-mentioned configuration message includes being used to indicate the change for carrying out secondary cell group SCG SCG change orders when, order is changed according to above-mentioned SCG and kept and the connection of above-mentioned source SCG cells and small with above-mentioned target SCG Area is synchronized including at least one following operation：Obtain the Stochastic accessing configuration of target main auxiliary cell；It is major-minor to obtain target Help the configuration of the up transmission resource of cell；Down-going synchronous is carried out with target main auxiliary cell；Start at SCG change failure detections Reason.In the present embodiment, start SCG change failure detection processing and start timer t307；Obtain target main auxiliary cell The up configuration for sending resource, wherein, the up transmission resource can be PUSCH resources；Start SCG change failure detection processing Can start timer t307.

In an optional embodiment, when above-mentioned configuration message includes being used to indicate the change for carrying out secondary cell group SCG SCG change orders when, disconnect includes at least one of with the connection of above-mentioned cell-of-origin：Reset SCG medium education MAC entity；For SCG Data Radio Bearer DRB, packet data convergence protocol PDCP entities and SCG Radio Link control are rebuild RLC entities processed；For the DRB of segmentation, perform PDCP data recoveries and rebuild SCG wireless spread-spectrum technology RLC entities；For master Small district's groups MCG Data Radio Bearer DRB is configured to be altered to SCG DRB, rebuilds PDCP entities and MCG Radio Link control RLC entities processed；For SCG secondary cell SCell, deactivation status is arranged to；Update SCG key and security algorithm；Should With SCG exclusive radio-resource-configuration；According to the configured SCG of user equipment (UE) or partition data radio bearer Split DRB Information re-starts configuration；Perform SCG secondary cell SCell release；Perform main auxiliary cell PSCell addition and modification； Configure underlying physical；The Data Radio Bearer Split DRB's of Data Radio Bearer DRB or segmentation for the SCG of hang-up SCG is transmitted, and recovers above-mentioned SCG transmission；Stop the detection of SCG radio link problems.In the present embodiment, stop Radio Link asking The detection of topic can be off and/or not start timer t313.

In an optional embodiment, when above-mentioned configuration message includes being used to indicate the change for carrying out secondary cell group SCG SCG change orders when, disconnect with the connection of above-mentioned cell-of-origin and access above-mentioned Target cell after, the above method also wraps Include：To target main auxiliary cell initiating random access procedure；And/or the up transmission of the target main auxiliary cell according to configuration Resource initiates the transmission of upstream data.

In an optional embodiment, after it is determined that being successfully accessed above-mentioned target main auxiliary cell, the above method is also Including at least one of：Stop SCG change failure detections；Judge whether to obtain the System Frame Number of above-mentioned target main auxiliary cell SFN, and measurement and/or radio-resource-configuration according to corresponding to using judged result.In the present embodiment, stop SCG changes to lose Lose detection and stop timer t307；Judge whether to obtain the system frame number SFN of above-mentioned target main auxiliary cell, and according to judgement As a result measurement and/or radio-resource-configuration include corresponding to using：Before PSCell SFN is obtained, matched somebody with somebody using CQI/SR/SRS UE is not needed to know target PCell SFN part in putting；After PSCell SFN is obtained, matched somebody with somebody using measurement and Radio Resource Putting in (as periodicity CQI is reported, SR configurations, SRS configurations) needs to know UE targets PCell SFN configuration.

In an optional embodiment, it is determined that be successfully accessed above-mentioned target main auxiliary cell condition include it is following at least One of：With the Stochastic accessing success of above-mentioned target main auxiliary cell；Start to send first in above-mentioned target main auxiliary cell Upstream data；Receive the from network side the 3rd and be properly received instruction, wherein, the above-mentioned 3rd is properly received instruction, for indicating Above-mentioned network side is successfully received first upstream data sent in above-mentioned target main auxiliary cell；Receive and come from network side Ascending resource release instruction；Receive and be successfully accessed instruction from network side；First in target main auxiliary cell can send out K-th of subframe determination before the ascending resource sent will disconnect the connection of cell-of-origin, wherein, above-mentioned k is the numerical value of protocol conventions.

Illustrated with reference to specific embodiment：

Specific embodiment 1：The single connection switching of holding source connection：

It is as shown in Figure 6 to configure behaviors of the UE of single connection after switching command is received.

Step 1：UE is kept and the connection (including PCell and SCell) of origin base station cell, and is carried out together with Target cell Step, UE need to perform following behavior in this process：

Start handover failure detection (starting timer t304)；

Stop UE auxiliary informations report including：Stop D2D auxiliary informations (i.e. by stopping t307 SidelinkUEInformation message) report；Stopping IDC auxiliary informations, (i.e. InDeviceCoexIndication disappears Breath) report；Stop power preference information (i.e. UEAssistanceInformation message) to report；Stop MBMS interest messages (i.e. MBMSInterestIndication message) reports；

Down-going synchronous is carried out with target PCell；

Need to obtain target PCell MIB for particular type UE (such as BL UE or UE in CE)；

Obtain the Stochastic accessing configuration of the Target cell PCell in configuration message.

Step 2：UE starts to discharge cell-of-origin under conditions of the connection of release cell-of-origin is met, and it is small to start access target Area；

Wherein discharging the condition of cell-of-origin connection includes (lower k values can be " 0 ")：

Successfully complete the down-going synchronous with Target cell PCell；

Successfully complete and determine to disconnect the connection of cell-of-origin with k-th of subframe after Target cell PCell down-going synchronous, Wherein k is the numerical value of protocol conventions；

K-th of subframe before Target cell PCell first transmissible up PRACH resource determines to disconnect source The connection of cell, wherein k are the numerical value of protocol conventions；

Wherein discharging the behavior of cell-of-origin connection includes：

Stop radio link problem detection (stop and/or do not start timer t310/t312).

Reset UE MAC entity；

Rebuild all RB PDCP entities；

Rebuild all RB RLC entities；

Deactivate Scell；

Using new UE ID (i.e. C-RNTI)；

If being configured with fullConfig, fullConfig configuration flows corresponding to this execution；

Perform the old configuration of the deletion in handoff procedure and apply new configuration flow；

Related content in RRCConnectionReconfigurationComplete message is set, including：RLF information Instruction can be used, MBSFN record metrical information can use instruction, and record metrical information can use instruction, and failure information is established in connection can With instruction；

RRCConnectionReconfigurationComplete is sent to underlying physical.

Step 3：UE is to Target cell PCell initiating random access procedures.

Step 4：After UE Stochastic accessing success, UE performs following behavior：

Stop handover failure detection (stopping timer T304)；

PCell SFN whether is obtained according to UE, uses corresponding configure step by step.Including：Obtaining PCell SFN Before, do not need UE to know target PCell SFN part in being configured using CQI/SR/SRS；After PCell SFN is obtained, adopt Need to know UE targets with measurement and radio-resource-configuration (such as measurement interval, periodicity CQI are reported, SR configurations, SRS configurations) PCell SFN configuration；

Report associated ancillary information.Including：Like the UE reported for being configured with IDC and power, IDC can be initiated (i.e. InDeviceCoexIndication message) report with UE auxiliary informations (comprising power hobby relevant information) (i.e. UEAssistanceInformation message) report；If target PCell broadcasts SIB15, UE can report MBMS interest to disappear Cease (i.e. MBMSInterestIndication message)；If target PCell broadcasts SIB18, UE can report D2D communications related Message content (i.e. SidelinkUEInformation message)；If target PCell broadcasts SIB19, UE can report D2D to send out Existing context related messages (i.e. SidelinkUEInformation message).

Specific embodiment 2：The SCG/SeNB changes of holding source connection.

Each flow stages of the specific embodiment are the same as specific embodiment 1.

Step 1：UE is after SCG change orders are received, and UE is kept and the connection of source SCG cells and and target SCG cells Synchronize, UE performs following behavior：

Obtain the Stochastic accessing configuration of the Target cell PSCell in configuration message；

Down-going synchronous is carried out with target PSCell；

Start the detection (starting timer T307) of SCG change failures.

Step 2：UE disconnects the connection with source SCG cells and accesses mesh on the premise of the condition for meeting to disconnect with source SCG Mark cell PSCell.

It, which neutralizes the condition that source SCG is disconnected, includes：

Successfully complete the down-going synchronous with Target cell PSCell；

Successfully complete and determine to disconnect the company of cell-of-origin with k-th of subframe after Target cell PSCell down-going synchronous Connect, wherein k is the numerical value of protocol conventions；

K-th of subframe before Target cell PSCell first transmissible up PRACH resource determines to disconnect The connection of cell-of-origin, wherein k are the numerical value of protocol conventions；

UE, which disconnects the behavior being connected with cell-of-origin, to be included：

Reset SCG MAC；

For SCG DRB, PDCP entities and SCG RLC entities are rebuild；

For split DRB, perform PDCP data recoveries and rebuild SCG RLC entities；

It is configured to be altered to SCG DRB for MCG DRB, rebuilds PDCP entities and MCG RLC entities；

For SCG SCell (except PSCell), deactivation status is arranged to；

According to config update SCG/SeNB related key and security algorithm；

Using SCG exclusive radio-resource-configuration；

The SCG/Split DRB configured to current UE reconfigures according to configuration information；

According to configuration, SCG SCell releases are performed；

According to configuration, PSCell addition and modification are performed；

According to configuration, SCG SCell additions and modification are performed；

Configure underlying physical；

Transmitted for SCG DRB or the split DRB of hang-up SCG, recover its SCG transmission；

Stop radio link problem detection (stop and/or do not start timer T313).

Step 3：UE is to Target cell PSCell initiating random access procedures.

Step 4：After the random access procedure success that UE initiates to Target cell PSCell, UE performs following behavior：

Stop SCG changes failure detection (stopping timer T307).

PSCell SFN whether is obtained according to UE, uses corresponding configure step by step.Including：Obtaining PSCell SFN Before, do not need UE to know target PCell SFN part in being configured using CQI/SR/SRS；After PSCell SFN is obtained, Using needing to know UE targets PCell's in measurement and radio-resource-configuration (as periodicity CQI is reported, SR configurations, SRS configurations) SFN configuration.

Specific embodiment 3：The dual link switching of holding source connection.

Fig. 7 be in the specific embodiment of the invention dual link switching flow chart, step 1：UE receives switching life Order and the order of SCG changes, the two network side orders indicate to need to keep and the connection of cell-of-origin.Then UE parallel perform and Target PCell is target PSCell synchronizing process.UE receives the same specific implementation of behavior (as shown in Figure 6) after switching command Step 1 in example 1, UE receive the behavior after SCG change orders with step 1 in specific embodiment 2.

Step 2.1：UE disconnects the behavior for connecting and accessing target PCell with source MCG, with step 2 in specific embodiment 1.

Step 2.2：UE disconnects the behavior for connecting and accessing target PSCell with source SCG, with step 2 in specific embodiment 2. Unlike, UE disconnect the trigger condition that is connected with source SCG cells it is extra include that " UE disconnects and the company of source MCG cells Connect ".

Step 3.1：With step 3 in specific embodiment 1.

Step 3.2：With step 3 in specific embodiment 2.

Step 4.1：With step 4 in specific embodiment 1.

Step 4.2：With step 4 in specific embodiment 2.

Specific embodiment 4：The single connection switching of random access procedure is not triggered

The specific embodiment UE handling process stage is the same as specific embodiment 1.Unlike, the switching command that UE is received Middle instruction does not have in Target cell PCell initiating random access procedures, and substituted is that Target cell can be configured in switching command PCell up transmission PUSCH resources, upstream data is sent for UE.

Step 1：With the step 1 of specific embodiment 1.Unlike, UE " need not obtain the Target cell in configuration message PCell Stochastic accessing configuration.", substituted is that UE needs " to obtain the upper of the Target cell PCell of the distribution in configuration message Row sends the configuration of resource, and wherein the up transmission resource can be PUSCH resources.”

Step 2：With the step 2 of specific embodiment 1.Unlike, the condition of UE releases cell-of-origin connection does not include " in target K-th of subframe determination before cell PCell first transmissible up PRACH resource will disconnect the connection of cell-of-origin, its Middle k is the numerical value of protocol conventions ", substituted condition is " in Target cell PCell first transmissible up transmission resource Preceding k-th of subframe determination will disconnect the connection of cell-of-origin, and wherein k is the numerical value of protocol conventions ".

Step 3：UE initiates the transmission of upstream data according to the Target cell PCell of configuration up transmission resource.

Step 4：With the step 4 of specific embodiment 1.Unlike, the UE and Target cell PCell conditions being successfully accessed are：

UE starts to send first upstream data in Target cell PCell；

UE receives is properly received instruction in Target cell PCell first upstream data sent from network side；

K-th subframes of the UE before Target cell PCell first transmissible up transmission resource determines to disconnect The connection of cell-of-origin, wherein k are the numerical value of protocol conventions；

UE starts to send handoff completion message in Target cell PCell；

UE receives is properly received instruction in the Target cell PCell handoff completion messages sent from network side；

K-th subframes of the UE before Target cell PCell first transmittable handoff completion message subframe determines to break The connection for cell of increasing income, wherein k are the numerical value of protocol conventions；

UE receives the release instruction of network side ascending resource；

What UE received network side is successfully accessed instruction.

Specific embodiment 5：The SCG/SeNB changes of random access procedure are not triggered

The specific embodiment UE handling process stage is the same as specific embodiment 2.Unlike, the SCG that UE is received is changed Instruction does not have in Target cell PSCell initiating random access procedures in order, and substituted is that can configure mesh in SCG change orders Cell PSCell up transmission PUSCH resources are marked, upstream data is sent for UE.

Step 1：With the step 1 of specific embodiment 2.Unlike, UE " need not obtain the Target cell in configuration message PSCell Stochastic accessing configuration ", substituted is that UE needs " to obtain the upper of the Target cell PSCell of the distribution in configuration message Row sends the configuration of resource, and wherein the up transmission resource can be PUSCH resources.”

Step 2：With the step 2 of specific embodiment 2.Unlike, the condition of UE releases cell-of-origin connection does not include " in target K-th of subframe determination before cell PSCell first transmissible up PRACH resource will disconnect the connection of cell-of-origin, its Middle k is the numerical value of protocol conventions ", substituted condition is " to be provided in Target cell PSCell first transmissible up send K-th of subframe determination before source will disconnect the connection of cell-of-origin, and wherein k is the numerical value of protocol conventions ".

Step 3：UE initiates the transmission of upstream data according to the Target cell PSCell of configuration up transmission resource.

Step 4：With the step 4 of specific embodiment 2.Unlike, the UE and Target cell PSCell conditions being successfully accessed are：

UE starts to send first upstream data in Target cell PSCell；

UE receives is properly received instruction in Target cell PSCell first upstream data sent from network side；

UE receives the release instruction of network side ascending resource；

What UE received network side is successfully accessed instruction；

K-th subframes of the UE before Target cell PSCell first transmissible up transmission resource determines to disconnect The connection of cell-of-origin, wherein k are the numerical value of protocol conventions；

Specific embodiment 6：The dual link switching of random access procedure is not triggered.

Step 1：UE receives the order of switching command and SCG changes, and the two network side orders indicate to need to keep With the connection of cell-of-origin.Then UE is performed parallel and target PCell is target PSCell synchronizing process.UE receives switching command With step 1 in specific embodiment 4, UE receives the behavior after SCG change orders with specific implementation for behavior (as shown in Figure 6) afterwards Step 1 in example 5.

Step 2.1：UE disconnects the behavior for connecting and accessing target PCell with source MCG, with step 2 in specific embodiment 4.

Step 2.2：UE disconnects the behavior for connecting and accessing target PSCell with source SCG, with step 2 in specific embodiment 5. Unlike, UE disconnect the trigger condition that is connected with source SCG cells it is extra include that " UE disconnects and the company of source MCG cells Connect ".

Step 3.1：With step 3 in specific embodiment 4.

Step 3.2：With step 3 in specific embodiment 5.

Step 4.1：With step 4 in specific embodiment 4.

Step 4.2：With step 4 in specific embodiment 5.

Specific embodiment 7：The single connection switching for not triggering random access procedure and keeping source to connect.Same specific embodiment 1。

Specific embodiment 8：The SCG/SeNB changes for not triggering random access procedure and keeping source to connect.Same specific embodiment 2。

Specific embodiment 9：The dual link switching for not triggering random access procedure and keeping source to connect.With specific embodiment 3.

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.

A kind of cell switching device is additionally provided in the present embodiment, and the device is used to realize above-described embodiment and preferred reality Mode is applied, had carried out repeating no more for explanation.As used below, term " module " can realize the soft of predetermined function The combination of part and/or hardware.Although device described by following examples is preferably realized with software, hardware, or The realization of the combination of software and hardware is also what may and be contemplated.

Fig. 8 is the structured flowchart of cell switching device according to embodiments of the present invention, as shown in figure 8, the device includes：Connect Receive module 82, processing module 84, disconnect module 86, the device is illustrated below：

Receiving module 82, it is used to indicate the configuration message for carrying out cell switching for receiving；Processing module 84, is connected to Receiving module 82 is stated, for being kept and the connection of cell-of-origin and synchronous with Target cell not obtaining according to above-mentioned configuration message In the case of synchronized with Target cell；Module 86 is disconnected, above-mentioned processing module 84 is connected to, in preset trigger condition Under, disconnect the connection with above-mentioned cell-of-origin and access above-mentioned Target cell.

In an optional embodiment, above-mentioned preset trigger condition includes at least one of：Complete and above-mentioned target The down-going synchronous of cell；Complete to determine to disconnect with k-th of subframe of the protocol conventions after the down-going synchronous of above-mentioned Target cell The connection of cell-of-origin, wherein, above-mentioned k is the numerical value of protocol conventions；In first transmissible ascending of above-mentioned Target cell K-th of subframe before reason RACH PRACH resources determine to disconnect the connection of cell-of-origin, wherein, above-mentioned k be agreement about Fixed numerical value；K-th of subframe before first transmissible up transmission resource of above-mentioned Target cell determines to disconnect source The connection of cell, wherein, above-mentioned k is the numerical value of protocol conventions；Disconnect the connection with source main plot group MCG.

In an optional embodiment, above-mentioned processing module 84 can protect according to above-mentioned switching command in the following manner Holding with the connection of above-mentioned cell-of-origin and carrying out down-going synchronous with above-mentioned Target cell includes：Start handover failure detection processing；Stop Only auxiliary information reports, wherein, above-mentioned auxiliary information includes at least one of：Device-to-device D2D auxiliary informations, equipment IDC auxiliary informations, power preference information, multicast broadcast multimedia service MBMS interest informations coexists in class；Enter with target main plot Row down-going synchronous；Obtain the Master Information Block MIB of target main plot；Obtain the Stochastic accessing configuration of target main plot；Obtain target The configuration of the up transmission resource of main plot.

In an optional embodiment, above-mentioned disconnection module 86 can disconnect at least one in the following manner with it is above-mentioned The connection of cell-of-origin：Stop radio link problem detection；Reset the media access control MAC entity of user equipment (UE)；Rebuild institute There are radio bearer RB packet data convergence protocol PDCP entities；Rebuild all radio bearer RB wireless spread-spectrum technology RLC entities； Deactivate secondary cell；Using new terminal iidentification；When being configured with full configuration fullConfig, configured entirely corresponding to execution FullConfig configuration flows；Perform the old configuration of the deletion in handoff procedure and apply new configuration flow；Radio Resource control is set System connection is again with completion RRCConnectionReconfigurationComplete message；Wireless heterogeneous networks connection is matched somebody with somebody again Complete RRCConnectionReconfigurationComplete message and be sent to underlying physical.

In an optional embodiment, said apparatus also includes：First initiation module and/or the first sending module, under Illustrated in face of the device：

First initiation module, for disconnect with the connection of above-mentioned cell-of-origin and access above-mentioned Target cell after, to mesh Mark main plot initiating random access procedure；

First sending module, for disconnect with the connection of above-mentioned cell-of-origin and access above-mentioned Target cell after, according to The up transmission resource of the target main plot of configuration initiates the transmission of upstream data.

In an optional embodiment, said apparatus can also include at least one of：First stopping modular, first Judge module, reporting module, the device is illustrated below：

First stopping modular, for after determination is successfully accessed above-mentioned target main plot, stopping handover failure detection；The One judge module, it is for after determination is successfully accessed above-mentioned target main plot, judge whether to obtain above-mentioned Target cell Unite frame number SFN, and measurement and/or radio-resource-configuration according to corresponding to using judged result；Reporting module, for when determine into Work(is accessed after above-mentioned target main plot, reports auxiliary information.

In an optional embodiment, above-mentioned first judge module determines to be successfully accessed the condition of above-mentioned target main plot Including at least one of：With the Stochastic accessing success of above-mentioned target main plot；Start transmission on above-mentioned target main plot One upstream data；Receive first from network side and be properly received instruction, wherein, above-mentioned first is properly received instruction, is used for Indicate that above-mentioned network side is successfully received first upstream data sent on above-mentioned target main plot；It is small in above-mentioned target master K-th of subframe determination before first transmissible up transmission resource in area will disconnect the connection of cell-of-origin, wherein, above-mentioned k For the numerical value of protocol conventions；Start to send handoff completion message on above-mentioned target main plot；Receive second from network side Instruction is properly received, wherein, above-mentioned second, which is properly received instruction, is used to indicate that above-mentioned network side is properly received in above-mentioned target master The handoff completion message sent in cell；Before first transmittable handoff completion message subframe of above-mentioned target main plot K subframe determines to disconnect the connection of cell-of-origin；Receive the ascending resource release instruction from network side；Receive and come from network side Be successfully accessed instruction.

In an optional embodiment, above-mentioned processing module 84 can keep at least one in the following manner with it is above-mentioned The connection of cell-of-origin simultaneously carries out down-going synchronous with above-mentioned Target cell：When above-mentioned configuration message includes being used to indicate to carry out secondary cell During the SCG change orders of group SCG change, changed according to above-mentioned SCG and order the Stochastic accessing for obtaining target main auxiliary cell to be matched somebody with somebody Put；When the SCG that above-mentioned configuration message includes being used to indicate to carry out secondary cell group SCG change changes order, according to above-mentioned SCG Change order obtains the configuration of the up transmission resource of target main auxiliary cell；Down-going synchronous is carried out with target main auxiliary cell； Start SCG change failure detection processing.

In an optional embodiment, above-mentioned processing module 84 can disconnect at least one in the following manner with it is above-mentioned The connection of cell-of-origin：When the SCG that above-mentioned configuration message includes being used to indicate to carry out secondary cell group SCG change changes order, Reset SCG media access control MAC entity；When above-mentioned configuration message includes being used to indicate the change for carrying out secondary cell group SCG SCG change orders when, for SCG Data Radio Bearer DRB, rebuild packet data convergence protocol PDCP entities and SCG nothing Wired link controls RLC entities；When the SCG that above-mentioned configuration message includes being used to indicate to carry out secondary cell group SCG change changes life When making, for the DRB of segmentation, perform PDCP data recoveries and rebuild SCG wireless spread-spectrum technology RLC entities；When above-mentioned configuration When message includes the SCG change orders for being used to indicate to carry out secondary cell group SCG change, for main plot group MCG data without Line carrying DRB is configured to be altered to SCG DRB, rebuilds PDCP entities and MCG wireless spread-spectrum technology RLC entities；Match somebody with somebody when above-mentioned When putting message includes the SCG change orders for being used to indicate to carry out secondary cell group SCG change, for SCG secondary cell SCell, It is arranged to deactivation status；Update SCG key and security algorithm；When above-mentioned configuration message includes being used to indicate that progress is auxiliary small During the SCG change orders of district's groups SCG change, using SCG exclusive radio-resource-configuration；When above-mentioned configuration message includes being used for When indicating to carry out the SCG change orders of secondary cell group SCG change, according to user equipment (UE) configured SCG or partition data Radio bearer Split DRB information re-starts configuration；When above-mentioned configuration message includes being used to indicate to carry out secondary cell group SCG's During the SCG change orders of change, SCG secondary cell SCell release is performed；Perform main auxiliary cell PSCell addition and repair Change；When the SCG that above-mentioned configuration message includes being used to indicate to carry out secondary cell group SCG change changes order, configuration bottom is real Body；When the SCG that above-mentioned configuration message includes being used to indicate to carry out secondary cell group SCG change changes order, for hang-up SCG Data Radio Bearer DRB or the Data Radio Bearer Split DRB of segmentation SCG are transmitted, and recover above-mentioned SCG transmission； When the SCG that above-mentioned configuration message includes being used to indicate to carry out secondary cell group SCG change changes order, stop SCG radio chains The detection of road problem.

In an optional embodiment, said apparatus also includes：Second initiation module and/or the second sending module, under Illustrated in face of the device：

Second initiation module, for disconnect with the connection of above-mentioned cell-of-origin and access above-mentioned Target cell after, to mesh Mark main auxiliary cell initiating random access procedure；And/or second sending module, for disconnecting the connection with above-mentioned cell-of-origin And access after above-mentioned Target cell, the hair of upstream data is initiated according to the up transmission resource of the target main auxiliary cell of configuration Send.

In an optional embodiment, said apparatus also includes at least one of：Second stopping modular, second judge Module, the device is illustrated below：

Second stopping modular, for after determination is successfully accessed above-mentioned target main auxiliary cell, stopping SCG change failures Detection；Second judge module, for after determination is successfully accessed above-mentioned target main auxiliary cell, judging whether to obtain above-mentioned mesh Mark the system frame number SFN of main auxiliary cell, and measurement and/or radio-resource-configuration according to corresponding to using judged result.

In an optional embodiment, it is major-minor above-mentioned target can be successfully accessed by the determination of at least one following condition Help the condition of cell：With the Stochastic accessing success of above-mentioned target main auxiliary cell；Start to send out in above-mentioned target main auxiliary cell Send first upstream data；Receive the from network side the 3rd and be properly received instruction, wherein, the above-mentioned 3rd is properly received instruction, For indicating that above-mentioned network side is successfully received first upstream data sent in above-mentioned target main auxiliary cell；Receive and The ascending resource release instruction of automatic network side；Receive and be successfully accessed instruction from network side；The of target main auxiliary cell K-th of subframe determination before one transmissible ascending resource will disconnect the connection of cell-of-origin, wherein, above-mentioned k is protocol conventions Numerical value.

It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong Cross in the following manner realization, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or above-mentioned modules are with any The form of combination is located in different processors respectively.

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 the foregoing is only, 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. cell switching method, it is characterised in that including：

Receive the configuration message for indicating progress cell switching；

According to it is described configuration message keep and cell-of-origin connection and do not obtain it is synchronous with Target cell in the case of with target Cell synchronizes；

Under preset trigger condition, disconnect the connection with the cell-of-origin and access the Target cell.
2. according to the method for claim 1, it is characterised in that the preset trigger condition includes at least one of：

Complete the down-going synchronous with the Target cell；

K-th of subframe for completing the protocol conventions after the down-going synchronous with the Target cell determines to disconnect the company of cell-of-origin Connect, wherein, the k is the numerical value of protocol conventions；

K-th of subframe before first transmissible ascending physical signal RACH PRACH resource of the Target cell It is determined that the connection of cell-of-origin is disconnected, wherein, the k is the numerical value of protocol conventions；

K-th of subframe before first transmissible up transmission resource of the Target cell determines to disconnect cell-of-origin Connection, wherein, the k is the numerical value of protocol conventions；

Disconnect the connection with source main plot group MCG.
3. according to the method for claim 1, it is characterised in that when the configuration message includes being used to indicate that carrying out cell cuts During the switching command changed, keep with the connection of the cell-of-origin and descending with Target cell progress according to the switching command It is synchronous to include at least one following operation：

Start handover failure detection processing；

Stop reporting for auxiliary information, wherein, the auxiliary information includes at least one of：Device-to-device D2D auxiliary letters IDC auxiliary informations, power preference information, multicast broadcast multimedia service MBMS interest informations coexists in breath, equipment class；

Down-going synchronous is carried out with target main plot；

Obtain the Master Information Block MIB of target main plot；

Obtain the Stochastic accessing configuration of target main plot；

Obtain the configuration of the up transmission resource of target main plot.
4. according to the method for claim 1, it is characterised in that when the configuration message includes being used to indicate that carrying out cell cuts During the switching command changed, disconnecting the connection with the cell-of-origin includes at least one of：

Stop radio link problem detection；

Reset the media access control MAC entity of user equipment (UE)；

Rebuild all radio bearer RB packet data convergence protocol PDCP entities；

Rebuild all radio bearer RB wireless spread-spectrum technology RLC entities；

Deactivate secondary cell；

Using new terminal iidentification；

When being configured with full configuration fullConfig, full configuration fullConfig configuration flows corresponding to execution；

Perform the old configuration of the deletion in handoff procedure and apply new configuration flow；

Wireless heterogeneous networks are set to connect again with completion RRCConnectionReconfigurationComplete message；

Wireless heterogeneous networks connection is sent to completion RRCConnectionReconfigurationComplete message again Underlying physical.
5. according to the method for claim 1, it is characterised in that when the configuration message includes being used to indicate that carrying out cell cuts During the switching command changed, after the connection with the cell-of-origin is disconnected, methods described also includes：

To target main plot initiating random access procedure；And/or

The transmission of upstream data is initiated according to the up transmission resource of the target main plot of configuration.
6. according to the method for claim 5, it is characterised in that after it is determined that being successfully accessed the target main plot, institute Stating method also includes at least one of：

Stop handover failure detection；

Judge whether to obtain the system frame number SFN of the Target cell, and measure according to corresponding to using judged result and/or nothing Line resource distribution；

Report auxiliary information.
7. according to the method for claim 6, it is characterised in that it is determined that being successfully accessed the condition of the target main plot includes At least one of：

With the Stochastic accessing success of the target main plot；

Start to send first upstream data on the target main plot；

Receive first from network side and be properly received instruction, wherein, described first is properly received instruction, for indicating the net Network side is successfully received first upstream data sent on the target main plot；

K-th of subframe before first transmissible up transmission resource of the target main plot determines to disconnect cell-of-origin Connection, wherein, the k be protocol conventions numerical value；

Start to send handoff completion message on the target main plot；

Receive second from network side and be properly received instruction, wherein, described second, which is properly received instruction, is used to indicate the net Network side is properly received the handoff completion message sent on the target main plot；

It is small that k-th of subframe determination before first transmittable handoff completion message subframe of the target main plot will disconnect source The connection in area；

Receive the ascending resource release instruction from network side；

Receive and be successfully accessed instruction from network side.
8. according to the method for claim 1, it is characterised in that when the configuration message includes being used to indicate to carry out secondary cell During the SCG change orders of group SCG change, order is changed according to the SCG and keeps the connection with source SCG cells and and target SCG cells are synchronized including at least one following operation：

Obtain the Stochastic accessing configuration of target main auxiliary cell；

Obtain the configuration of the up transmission resource of target main auxiliary cell；

Down-going synchronous is carried out with target main auxiliary cell；

Start SCG change failure detection processing.
9. according to the method for claim 1, it is characterised in that when the configuration message includes being used to indicate to carry out secondary cell During the SCG change orders of group SCG change, disconnecting the connection with source SCG cells includes at least one of：

Reset SCG media access control MAC entity；

For SCG Data Radio Bearer DRB, packet data convergence protocol PDCP entities and SCG wireless spread-spectrum technology RLC are rebuild Entity；

For the DRB of segmentation, perform PDCP data recoveries and rebuild SCG wireless spread-spectrum technology RLC entities；

It is configured to be altered to SCG DRB for main plot group MCG Data Radio Bearer DRB, rebuilds PDCP entities and MCG Wireless spread-spectrum technology RLC entities；

For SCG secondary cell SCell, deactivation status is arranged to；

Update SCG key and security algorithm；

Using SCG exclusive radio-resource-configuration；

Configuration is re-started according to the configured SCG of user equipment (UE) or partition data radio bearer Split DRB information；

Perform SCG secondary cell SCell release；

Perform main auxiliary cell PSCell addition and modification；

Configure underlying physical；

The Data Radio Bearer Split DRB of Data Radio Bearer DRB or segmentation for the SCG of hang-up SCG transmission, it is extensive The multiple SCG transmission；

Stop the detection of SCG radio link problems.
10. according to the method for claim 1, it is characterised in that when the configuration message is auxiliary small including being carried out for instruction During the SCG change orders of district's groups SCG change, after the connection with the cell-of-origin is disconnected, methods described also includes：

To target main auxiliary cell initiating random access procedure；And/or

The transmission of upstream data is initiated according to the up transmission resource of the target main auxiliary cell of configuration.
11. according to the method for claim 10, it is characterised in that when it is determined that be successfully accessed the target main auxiliary cell it Afterwards, methods described also includes at least one of：

Stop SCG change failure detections；

Judge whether to obtain the system frame number SFN of the target main auxiliary cell, and measured according to corresponding to using judged result And/or radio-resource-configuration.
12. according to the method for claim 11, it is characterised in that it is determined that being successfully accessed the bar of the target main auxiliary cell Part includes at least one of：

With the Stochastic accessing success of the target main auxiliary cell；

Start to send first upstream data in the target main auxiliary cell；

Receive the from network side the 3rd and be properly received instruction, wherein, the described 3rd is properly received instruction, for indicating the net Network side is successfully received first upstream data sent in the target main auxiliary cell；

Receive the ascending resource release instruction from network side；

Receive and be successfully accessed instruction from network side；

K-th of subframe before first transmissible ascending resource of target main auxiliary cell determines to disconnect the company of cell-of-origin Connect, wherein, the k is the numerical value of protocol conventions.
A kind of 13. cell switching device, it is characterised in that including：

Receiving module, it is used to indicate the configuration message for carrying out cell switching for receiving；

Processing module, for being kept according to the configuration message and the connection of cell-of-origin and synchronous with Target cell not obtaining In the case of synchronized with Target cell；

Module is disconnected, under preset trigger condition, disconnecting the connection with the cell-of-origin and accessing the Target cell.
14. device according to claim 13, it is characterised in that the preset trigger condition includes at least one of：

Complete the down-going synchronous with the Target cell；

K-th of subframe of the protocol conventions after the down-going synchronous with the Target cell is completed, wherein, the k is protocol conventions Numerical value；

K-th of subframe before first transmissible ascending physical signal RACH PRACH resource of the Target cell, Wherein, the k is the numerical value of protocol conventions；

K-th of subframe before first transmissible up transmission resource of the Target cell, wherein, the k is agreement The numerical value of agreement；

Disconnect the connection with source main plot group MCG.