CN107666672A

CN107666672A - Optimization method, the apparatus and system of robustness

Info

Publication number: CN107666672A
Application number: CN201610595299.9A
Authority: CN
Inventors: 方建民
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-07-26
Filing date: 2016-07-26
Publication date: 2018-02-06

Abstract

The invention provides a kind of optimization method of robustness, apparatus and system；Wherein, the optimization method includes：Obtain connection failure information of the user equipment (UE) in the case where keeping being connected with cell-of-origin from cell-of-origin into Target cell handoff procedure；Wherein, there occurs connection failure for indicating UE and cell-of-origin and/or Target cell for connection failure information；The mobile robustness of communication system according to where connection failure Advance data quality UE.By the invention it is possible to solve the problems, such as still to be able to realize MRO functions well in the case of the switching for keeping being connected with cell-of-origin, reach the effect of Enhanced MR O functions.

Description

Optimization method, the apparatus and system of robustness

Technical field

The present invention relates to communication technical field, in particular to a kind of optimization method of robustness, apparatus and system.

Background technology

Long Term Evolution (Long Term Evolution, abbreviation LTE) network includes the universal land radio access web of evolution (Evolved Universal Terrestrial Radio Access Network, abbreviation E-UTRAN) and core net (Core Network, abbreviation CN).E-UTRAN includes evolution base station (evolved Node B, eNB).CN includes mobile management Entity (Mobile Management Entity, abbreviation MME) and gateway (Serving Gateway, abbreviation S-GW) etc.. Connected by S1 interfaces between eNB and CN, can be connected between eNB by X2 interface.One eNB can manage one or more small Area (Cell).The interface of user equipment (User Equipment, abbreviation UE) between cell is referred to as Uu mouths (or eating dishes without rice or wine).

In order to reduce the manual intervention to network, O＆M cost is reduced, while improves the performance and stability of network, the 3rd Introduced for partner program (Third Generation Partnership Projects, 3GPP) in E-UTRAN systems Self-organizing network (Self-Organized Network, SON) concept.Mobile robustness optimization (Mobility Robustness Optimization, MRO) critical function as SON, the shifting between neighbor cell is adjusted through consultation Dynamic property parameter, with reduce connection failure (Connection Failure) include handoff failure (Handover Failure, HOF), the related Radio Link Failure (Radio Link Failure, RLF) of switching.

At present in LTE system, UE can first break during another eNB cell is switched to from eNB cell The connection with cell-of-origin is driveed, then carries out the connection with Target cell, this will cause UE the service disconnection of short time occur.One kind is kept away It is that UE is kept as far as possible in handoff procedure and the connection of cell-of-origin is until UE and mesh to exempt from UE the method that short time service interrupts occur Mark cell is successfully established connection.But influence MRO functions are realized performance by this.

But how to remain to realize MRO functions, mesh well in the case where introducing the switching for keeping being connected with cell-of-origin It is preceding not yet to propose effective solution.

The content of the invention

The embodiments of the invention provide a kind of optimization method of robustness, apparatus and system, at least to solve introducing The problem of how remaining to realize MRO functions well in the case of the switching for keeping being connected with cell-of-origin.

According to one embodiment of present invention, there is provided a kind of optimization method of robustness, including：Obtain user equipment (UE) Connection failure information in the case where keeping being connected with cell-of-origin from from cell-of-origin to Target cell handoff procedure；Wherein, even Connecing failure information, there occurs connection failure for indicating UE and cell-of-origin and/or Target cell；According to connection failure Advance data quality The mobile robustness of communication system where UE.

Alternatively, according to the mobile robustness of communication system where connection failure Advance data quality UE include it is following at least it One：The selection priority of Target cell is adjusted according to connection failure information；Cell-of-origin and target are adjusted according to connection failure information Moving between cells parameter.

Alternatively, it is used to indicate UE and Target cell there occurs during connection failure in connection failure information, acquisition user sets Connection failure information when standby UE switches while keeping and being connected with from cell-of-origin to Target cell includes：The UE is received to send The message for carrying the connection failure information.

Alternatively, connection failure information includes at least one of：The mark of cell-of-origin, the mark of Target cell, is used for Indicate that UE and cell-of-origin are always maintained at the configured information being connected in handoff procedure.

Alternatively, it is used to indicate that UE, there occurs during connection failure, obtains user equipment with cell-of-origin in connection failure information Connection failure information when UE switches while keeping and being connected with from cell-of-origin to Target cell includes：From belonging to Target cell Target BS obtains connection failure information.Alternatively, the connection failure information in target BS obtains from UE.

Alternatively, connection failure information includes at least one of：The mark of cell-of-origin, the mark of Target cell, UE are received To switching command to cell-of-origin occur connection failure time, UE receive switching command to successful switch to Target cell when Between.

Alternatively, it is used to indicating UE and cell-of-origin and Target cell there occurs during connection failure in connection failure information, Obtaining connection failure information when user equipment (UE) switches while keeping and being connected with cell-of-origin to Target cell includes：From weight Establish cell or new cell own base station of establishing obtains connection failure information.

Alternatively, connection failure information includes at least one of：The mark of cell-of-origin, the mark of Target cell, rebuild Vertical cell or newly establish the mark of cell, UE receives switching command and receives and cut to the time with cell-of-origin generation connection failure, UE Order is changed to be re-established or to the time established with newly establishing cell to re-establishing cell.

According to one embodiment of present invention, there is provided a kind of optimization method of robustness, including：In holding and cell-of-origin In the case of connection, from cell-of-origin into Target cell handoff procedure, obtain for indicating to send out with cell-of-origin and/or Target cell The connection failure information of connection failure is given birth to；Connection failure information is sent to the source base station belonging to cell-of-origin；Wherein, connection is lost Lose the mobile robustness of communication system where information is used for source base station optimization cell-of-origin.

Alternatively, connection failure information be used for source base station optimization cell-of-origin where communication system mobile robustness include with It is at least one lower：Connection failure information is used for the selection priority for adjusting Target cell；Connection failure information is small for adjusting source Mobility parameters between area and Target cell.

Alternatively, it is used to indicating UE and Target cell there occurs during connection failure in connection failure information, by connection failure The source base station that information is sent to belonging to cell-of-origin includes：The message for carrying the connection failure information is sent to cell-of-origin.

Alternatively, before the message of the connection failure information is carried to cell-of-origin transmission, method also includes： Preserve connection failure information；The configured information that connection failure information is preserved for instruction is sent to cell-of-origin.

Alternatively, it is used to indicate that UE, there occurs during connection failure, connection failure is believed with cell-of-origin in connection failure information Ceasing the source base station being sent to belonging to cell-of-origin includes：Connection failure information is transmitted to by source by Target cell said target base station Base station.

Alternatively, by Target cell said target base station by the connection failure information be transmitted to the source base station it Before, method also includes：Preserve connection failure information；The instruction that connection failure information is preserved for instruction is sent to Target cell Information；And/or the message for carrying the connection failure information is sent to the Target cell.

Alternatively, it is used to indicating UE and cell-of-origin and Target cell there occurs during connection failure in connection failure information, Connection failure information is sent to the source base station belonging to cell-of-origin to be included：By re-establishing cell or newly establishing the affiliated base of cell Stand and connection failure information is transmitted to source base station.

Alternatively, the connection failure information is transmitted to by re-establishing cell or newly establishing cell own base station Before the source base station, method also includes：Preserve connection failure information；It is used for re-establishing cell or newly establishing cell and send The configured information of connection failure information is preserved in instruction.

According to one embodiment of present invention, there is provided a kind of optimization device of robustness, including：Acquisition module, it is used for Connection of the user equipment (UE) in the case where keeping being connected with cell-of-origin from cell-of-origin into Target cell handoff procedure is obtained to lose Lose information；Wherein, there occurs connection failure for indicating UE and cell-of-origin and/or Target cell for connection failure information；Optimize mould Block, the mobile robustness for the communication system according to where connection failure Advance data quality UE.

Alternatively, optimization module is used at least one of：The selection that Target cell is adjusted according to connection failure information is excellent First level；Mobility parameters between cell-of-origin and Target cell are adjusted according to connection failure information.

Alternatively, acquisition module is additionally operable to be used to indicate UE there occurs connection failure with Target cell in connection failure information When, receive the message for carrying connection failure information that UE is sent.

Alternatively, acquisition module is additionally operable to be used to indicate UE there occurs connection failure with cell-of-origin in connection failure information When, obtain connection failure information from the target BS belonging to Target cell.

Alternatively, acquisition module is additionally operable to be used to indicate that UE occurs with cell-of-origin and Target cell in connection failure information During connection failure, from re-establishing cell or new cell own base station of establishing obtains connection failure information.

According to one embodiment of present invention, there is provided a kind of optimization device of robustness, including：Acquisition module, it is used for In the case where keeping being connected with cell-of-origin, from cell-of-origin into Target cell handoff procedure, obtain for instruction and cell-of-origin And/or there occurs the connection failure information of connection failure for Target cell；Sending module, for connection failure information to be sent into source Source base station belonging to cell；Wherein, the mobile robust of communication system where connection failure information is used for source base station optimization cell-of-origin Property.

Alternatively, sending module is additionally operable to be used to indicate UE there occurs connection failure with Target cell in connection failure information When, the message for carrying connection failure information is sent to cell-of-origin.

Alternatively, sending module is additionally operable to be used to indicate UE there occurs connection failure with cell-of-origin in connection failure information When, connection failure information is transmitted to by source base station by Target cell said target base station.

Alternatively, sending module is additionally operable to be used to indicate that UE occurs with cell-of-origin and Target cell in connection failure information During connection failure, by re-establishing cell or new establishing cell own base station connection failure information is transmitted into source base station.

According to one embodiment of present invention, there is provided a kind of optimization system of robustness, including user equipment (UE) and source Base station, in the case where keeping being connected with the cell-of-origin of source base station subordinate, from cell-of-origin into Target cell handoff procedure, UE is obtained Take and believe in instruction and cell-of-origin and/or Target cell there occurs the connection failure information of connection failure, and by connection failure Breath is sent to source base station；Source base station is used to receive the connection failure information of UE transmissions and according to connection failure Advance data quality UE institutes In the mobile robustness of communication system.

Alternatively, system also includes target BS；Target BS is used to the connection failure information that UE is obtained being transmitted to source Base station.

Alternatively, system also includes re-establishing cell or new base station where establishing cell；Re-establish cell or newly establish small Base station where area is used to the connection failure information that UE is obtained being transmitted to source base station.

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 In the program code for performing following steps：User equipment (UE) is obtained in the case where keeping being connected with cell-of-origin from cell-of-origin to mesh Mark the connection failure information in cell switch process；Wherein, connection failure information is used to indicate that UE and cell-of-origin and/or target are small There occurs connection failure in area；The mobile robustness of communication system according to where connection failure Advance data quality UE.

It is logical according to where connection failure Advance data quality UE due to connection failure information can be got by the present invention The mobile robustness of letter system, and then can solve still to be able in the case of the switching for keeping being connected with cell-of-origin real well The problem of existing MRO functions, reach the effect of Enhanced MR O functions.

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 according to embodiments of the present invention 1 network architecture diagram one provided；

Fig. 2 is according to embodiments of the present invention 1 network architecture diagram two provided；

Fig. 3 is according to embodiments of the present invention 1 network architecture diagram three provided；

Fig. 4 is the flow chart one of the optimization method of the robustness provided according to embodiments of the present invention；

Fig. 5 is a kind of hardware block diagram of the mobile terminal of the optimization method of robustness of the embodiment of the present invention；

Fig. 6 is the flowchart 2 of the optimization method of the robustness provided according to embodiments of the present invention；

Fig. 7 is the schematic flow sheet of the method provided according to the preferred embodiment of the present invention 1；

Fig. 8 is the schematic flow sheet of the method provided according to the preferred embodiment of the present invention 3；

Fig. 9 (a) is the schematic flow sheet one of the method provided according to the preferred embodiment of the present invention 4；

Fig. 9 (b) is the schematic flow sheet two of the method provided according to the preferred embodiment of the present invention 4；

Figure 10 is the structured flowchart of the optimization device of robustness according to embodiments of the present invention；

Figure 11 is the structured flowchart two of the optimization device of the robustness provided 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.

Embodiment 1

The embodiment of the present application can be run in the network architecture shown in Fig. 1,2 or 3, and Fig. 1 is according to embodiments of the present invention 1 The network architecture diagram one of offer, Fig. 2 are according to embodiments of the present invention 1 network architecture diagrams two provided, and Fig. 3 is according to of the invention real The network architecture diagram three of the offer of example 1 is applied, as shown in figure 1, the network architecture includes：User equipment (UE), source base station, target BS, Wherein, Target cells of the UE from the cell-of-origin in source base station into target BS, can be interacted between UE and source base station；Such as Shown in Fig. 2, the network architecture includes：UE, source base station, target BS and re-establish cell；Wherein, UE is small from the source in source base station Target cell of the area into target BS, UE, source base station and re-establishing can be interacted between cell；As shown in figure 3, the net Network framework includes：UE, source base station, target BS and newly establish cell；Wherein, UE is from the cell-of-origin in source base station to target BS In Target cell, UE, source base station and new establish between cell can interact.

A kind of optimization method for the robustness for running on the above-mentioned network architecture is provided in the present embodiment, and Fig. 4 is basis The flow chart one of the optimization method of the robustness of the embodiment of the present invention, as shown in figure 4, the flow comprises the following steps：

Step S402, obtain user equipment (UE) and cut in the case where keeping being connected with cell-of-origin from cell-of-origin to Target cell Connection failure information during changing；Wherein, connection failure information be used to indicating UE and cell-of-origin and/or Target cell there occurs Connection failure；

Step S404, the mobile robustness of communication system according to where connection failure Advance data quality UE.

By above-mentioned steps, due to connection failure information can be got, according to where connection failure Advance data quality UE The mobile robustness of communication system, and then can solve still to be able to well in the case of the switching for keeping being connected with cell-of-origin The problem of realizing MRO functions, reach the effect of Enhanced MR O functions.

In one embodiment of the invention, above-mentioned steps S404 can show as at least one of：Lost according to connection Lose the selection priority of information adjustment Target cell；Mobility between cell-of-origin and Target cell is adjusted according to connection failure information Parameter.

It should be noted that above-mentioned UE can have it is multiple, that is, the above-mentioned connection failure information obtained can be it is multiple, at this In the case of, these connection failure information can be analyzed, the movement of communication system where optimizing UE according to analysis result Robustness.

It should be noted that the selection priority of above-mentioned adjustment Target cell can be shown as：Reduce or raise target The selection priority of cell, in the case where above-mentioned connection failure information is more, such as more than predetermined threshold in the case of, can be with The selection priority of Target cell is reduced, but is not limited to this.Mobility parameters between above-mentioned adjustment cell-of-origin and Target cell It can show as：In the case where above-mentioned connection failure information is more, such as more than predetermined threshold in the case of, by cell-of-origin Between Target cell mobility parameters adjust to make it is more difficult be switched to the Target cell, but be not limited to this.

It should be noted that different for the information of above-mentioned connection failure information instruction, step S402 performance is just not yet Together, that is, it is also just different to obtain the mode of connection failure information, detailed description below：

In one embodiment of the invention, in connection failure information, for indicating UE, there occurs be connected to lose with Target cell When losing, above-mentioned steps S402 can be shown as：Receive the message for carrying the connection failure information that the UE is sent.

It should be noted that above-mentioned message can be the response message of the request message sent to UE, thus, above-mentioned steps S402 can specifically be shown as：Request message is sent to UE；Receive the response message that UE is sent；Wherein, carried in response message Connection failure information.The connection failure information is directly obtained by UE.

It should be noted that above-mentioned connection failure information can include at least one of：The mark of cell-of-origin, target are small The mark in area, for indicating that UE and cell-of-origin are always maintained at the configured information being connected in handoff procedure.

In one embodiment of the invention, in connection failure information, for indicating UE, there occurs connection failure with cell-of-origin When, above-mentioned steps S402 can be shown as：Connection failure information is obtained from the target BS belonging to Target cell.Need what is illustrated It is that the connection failure information in target BS obtains from UE.I.e. the connection failure information is forwarded by target BS Come over.

It should be noted that above-mentioned connection failure information can include at least one of：The mark of cell-of-origin, target are small The mark in area, UE receive switching command and receive switching command to successful switch to the time that connection failure occurs with cell-of-origin, UE To the time of Target cell.

In one embodiment of the invention, it is used to indicate that UE is sent out with cell-of-origin and Target cell in connection failure information When having given birth to connection failure, above-mentioned steps S402 can be shown as：Connect from re-establishing cell or newly establishing cell own base station and obtain Connect failure information.It should be noted that it is from UE to re-establish cell or the new connection failure information established in cell own base station Middle acquisition, i.e. connection failure information is from re-establishing cell or new establish cell own base station and forward.

It should be noted that above-mentioned connection failure information can include at least one of：Mark, the target of cell-of-origin are small The mark in area, re-establish cell or newly establish the mark of cell, UE receives switching command and connection failure occurs to cell-of-origin Time, UE receive switching command and re-established or to the time established with newly establishing cell to re-establishing cell.

It should be noted that the above method can also keep in handoff procedure the time being connected with cell-of-origin to UE (i.e. UE in connection failure information receives switching command to the time that connection failure occurs with cell-of-origin), UE and cell-of-origin there occurs Connection failure to re-establish time that cell re-established (UE i.e. in connection failure information receive switching command to again Establish the time that cell is re-established subtract UE receive switching command to cell-of-origin occur connection failure time) divided Analysis, keep in handoff procedure time for being connected with cell-of-origin shorter for UE, or there occurs connection failure UE and cell-of-origin to arrive Should more it pay attention to re-establishing time that cell re-established longer situation.

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

In embodiments of the present invention, a kind of optimization method of robustness is additionally provided, the optimization method can also be run on In the network architecture shown in Fig. 1,2,3, in one embodiment of the invention, this method embodiment can be in mobile terminal, meter Performed in calculation machine terminal or similar arithmetic unit.Exemplified by running on mobile terminals, Fig. 5 is the one of the embodiment of the present invention The hardware block diagram of the mobile terminal of the optimization method of kind robustness.As shown in figure 5, mobile terminal 50 can include one or (processor 502 can include but is not limited to Micro-processor MCV or may be programmed patrol multiple (one is only shown in figure) processors 502 The processing unit of volume device FPGA etc.), the memory 504 for data storage and the transmitting device for communication function 506.It will appreciated by the skilled person that the structure shown in Fig. 5 is only to illustrate, it is not to the knot of above-mentioned electronic installation It is configured to limit.For example, mobile terminal 50 may also include more either less components than shown in Fig. 5 or have and Fig. 5 Shown different configuration.

Memory 504 can be used for the software program and module of storage application software, such as the robust in the embodiment of the present invention Property optimization method corresponding to programmed instruction/module, 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, NIC), its can be connected by base station with other network equipments so as to it is mutual Networking is communicated.In an example, transmitting device 506 can be radio frequency (Radio Frequency, RF) module, and it is used In wirelessly being communicated with internet.

Fig. 6 is the flowchart 2 of the optimization method of the robustness provided according to embodiments of the present invention, as shown in fig. 6, the party Method includes：

Step S602, in the case where keeping being connected with cell-of-origin, from cell-of-origin into Target cell handoff procedure, obtain For indicating that there occurs the connection failure information of connection failure with cell-of-origin and/or Target cell；

Step S604, connection failure information is sent to the source base station belonging to cell-of-origin；Wherein, connection failure information is used for The mobile robustness of communication system where source base station optimization cell-of-origin.

By above-mentioned steps, due to connection failure information can be sent to source base station, and then source base station can be enabled Connection failure information is enough got, can be entered according to the mobile robustness of communication system where connection failure Advance data quality UE And can solve the problems, such as still to be able to realize MRO functions well in the case of the switching for keeping being connected with cell-of-origin, reach The effect of Enhanced MR O functions.

In one embodiment of the invention, above-mentioned connection failure information is used for communication system where source base station optimization cell-of-origin The mobile robustness of system can include at least one of：Connection failure information is used for the selection priority for adjusting Target cell； Connection failure information is used to adjust mobility parameters between cell-of-origin and Target cell.

It should be noted that the difference according to above-mentioned connection failure information, source base station is sent to by the connection failure information Mode it is also different, introduce in detail below：

In one embodiment of the invention, in connection failure information, for indicating UE, there occurs be connected to lose with Target cell When losing, above-mentioned steps S604 can be shown as：The message for carrying the connection failure information is sent to cell-of-origin.

Above-mentioned steps S604 can also be shown as：The message for carrying the connection failure information is directly sent to cell-of-origin Or send the response message for carrying connection failure information corresponding with the request message of cell-of-origin transmission to cell-of-origin.

It is and above-mentioned to the cell-of-origin transmission sound for carrying connection failure information corresponding with the request message that cell-of-origin is sent Message is answered to can behave as：Receive the request message that cell-of-origin is sent；Response message is sent to cell-of-origin；Wherein, in response message Carry connection failure information, you can so that connection failure information is sent into cell-of-origin by response message.

It should be noted that carrying connection failure to the request message that cell-of-origin is sent with cell-of-origin is sent is corresponding Before the response message of information, the above method also includes：Preserve connection failure information；Send to cell-of-origin and preserved for instruction The configured information of connection failure information.

In one embodiment of the invention, in connection failure information, for indicating UE, there occurs connection failure with cell-of-origin When, above-mentioned steps S604 can be shown as：Connection failure information is transmitted to by source base station by Target cell said target base station. Can be specifically that the connection that carries that target BS is sent by the UE message for carrying connection failure information sent or UE is lost The response message of information is lost to get connection failure information, and then the connection failure information of acquisition is sent to by target BS again Source base station.

It should be noted that in the response message for carrying the connection failure information sent by UE come the company of getting Before connecing failure information, the above method also includes：Preserve connection failure information；Sent to Target cell and preserve company for instruction Connect the configured information of failure information；Receive the request message that Target cell is sent.Connection failure is carried what is sent by UE Before the message of information gets connection failure information, the above method can also include：Send and carry to the Target cell The message of the connection failure information.

In one embodiment of the invention, it is used to indicate that UE is sent out with cell-of-origin and Target cell in connection failure information When having given birth to connection failure, above-mentioned steps S604 can be shown as：Will by re-establishing cell or new cell own base station of establishing Connection failure information is transmitted to source base station.Specifically, re-establishing cell or newly establishing cell own base station can be sent by UE The message for carrying connection failure information or UE send carry the response message of connection failure information to get connection Failure information, then the base station connection failure information of acquisition is sent to source base station again.

It should be noted that in the response message for carrying the connection failure information sent by UE come the company of getting Before connecing failure information, the above method can also include：Preserve connection failure information；To re-establishing cell or newly establish cell Send the configured information that connection failure information is preserved for instruction；Reception re-establishes cell or newly establishes asking for cell transmission Seek message.Before the message for carrying connection failure information sent by UE gets connection failure information, the above method It can also include：Cell or the new message established cell transmission and carry the connection failure information are re-established to described.

It should be noted that the executive agent of above-mentioned steps can be terminal, but it is not limited to this.

For a better understanding of the present invention, the present invention is further explained below in conjunction with preferred embodiment.

The preferred embodiment of the present invention provides a kind of MRO methods of enhancing, including：Source eNB is obtained by X2 and/or Uu interfaces Connection failure information of the UE in the switching for carrying out keeping being connected with cell-of-origin is taken, source eNB believes according to the UE connection failures of acquisition Breath raising MRO functions realize performance.

The source eNB obtains connections of the UE in the switching for carrying out keeping being connected with cell-of-origin by X2 and/or Uu interfaces Failure information includes at least one of：

In the handoff procedure by source eNB cell-of-origins to target eNB Target cells, UE is always maintained at connecting UE with cell-of-origin Connect, but with Target cell there occurs during connection failure, UE, which preserves connection failure information, includes cell-of-origin mark, Target cell mark Knowledge, UE and cell-of-origin are always maintained at the instruction of connection, and the instruction for preserving connection failure information is then sent to cell-of-origin, and source is small Area passes through UEInformationRequest (equivalent to above-mentioned request message) and UEInformationResponse message (equivalent to above-mentioned response message) come obtain UE preservation connection failure information.

UE is in the handoff procedure by source eNB cell-of-origins to target eNB Target cells, UE successful switch to Target cell, But with cell-of-origin there occurs during connection failure in handoff procedure, UE, which preserves connection failure information, includes cell-of-origin mark, target Cell ID, UE receive switching command and receive switching command to successful switch to the time with cell-of-origin generation connection failure, UE To the time of Target cell, the instruction for preserving connection failure information is then sent to Target cell, Target cell passes through UEInformationRequest and UEInformationResponse message come obtain UE preservation connection failure information, mesh The connection failure information obtained from UE is sent to source eNB by mark eNB again.

For UE in the handoff procedure by source eNB cell-of-origins to target eNB Target cells, UE and cell-of-origin and Target cell are equal There occurs during connection failure, UE, which preserves connection failure information, to be included cell-of-origin mark, Target Cell Identifier, re-establishes cell mark Know, UE receives switching command and receives switching command to the time with cell-of-origin generation connection failure, UE and enter to re-establishing cell The time that row re-establishes, then pass through RRC Connection Reestablishment Complete or RRC Connection Setup Complete preserve the instruction of connection failure information to re-establishing or newly establish cell and send, weight Establish or newly establish cell by UE Information Request and UE Information Response message to obtain The connection failure information that UE is preserved, re-establish or newly establish the affiliated eNB of cell again by the connection failure information obtained from UE transmission Give source eNB.

Preferred embodiment 1

Fig. 7 is the schematic flow sheet of the method provided according to the preferred embodiment of the present invention 1, as shown in fig. 7, this method bag Include：

Step 701, UE are in the handoff procedure by source eNB cell-of-origins to target eNB Target cells, and UE is kept as far as possible and source The connection of cell, UE are always maintained at being connected with cell-of-origin, but there occurs connection failure with Target cell.

Step 702, UE preservation connection failure information include cell-of-origin mark, Target Cell Identifier, UE and cell-of-origin always Keep the instruction of connection.

Step 703, UE send the instruction for preserving connection failure information to cell-of-origin.

Step 704, cell-of-origin send UEInformationRequest message to UE.

The connection failure that step 705, UE send the carrying preservation of UEInformationResponse message to cell-of-origin is believed Breath.

Step 706, source eNB learn UE in the switching by cell-of-origin to Target cell according to the UE connection failure information of acquisition During, with Target cell there occurs connection failure, and it is always maintained at being connected with cell-of-origin.

Step 707, source eNB UE is switched to each adjacent area occur with Target cell there occurs connection failure (and and cell-of-origin Be always maintained at connecting) situation analyzed, when analysis result is switched as follow-up UE selection target cell foundation (as will The degree of priority of selection target cell reduces), and/or (such as consult as the foundation for consulting adjustment with neighboring interval mobility parameters Mobility parameters between adjustment and Target cell are so that slightly difficult to its switching).

Preferred embodiment 2

This preferred embodiment is similar with above preferred embodiment 1, unlike, above-mentioned steps 702~705 are changed to：

Step 702a:UE, which prepares connection failure information, includes cell-of-origin mark, Target Cell Identifier, UE and cell-of-origin always Keep the instruction of connection.

Step 703a：UE sends message to cell-of-origin, wherein, the message carries connection failure information.

Preferred embodiment 3

Fig. 8 is the schematic flow sheet of the method provided according to the preferred embodiment of the present invention 3, as shown in figure 8, this method bag Include：

Step 801, UE are in the handoff procedure by source eNB cell-of-origins to target eNB Target cells, and UE is kept as far as possible and source The connection of cell, UE successful switch has arrived Target cell, but there occurs connection failure with cell-of-origin in handoff procedure.

Step 802, UE preserve connection failure information and receive switching command including cell-of-origin mark, Target Cell Identifier, UE Time of the switching command to successful switch to Target cell is received to the time (such as 10ms) with cell-of-origin generation connection failure, UE (such as 50ms).

Step 803, UE send the instruction for preserving connection failure information to Target cell.

Step 804, Target cell send UE Information Request message to UE.

Step 805, UE send the connection failure of UE Information Response message carrying preservation to Target cell Information.

The connection failure information obtained from UE is sent to source eNB by step 806, target eNB.

Step 807, source eNB learn UE in the switching by cell-of-origin to Target cell according to the UE connection failure information of acquisition During, with cell-of-origin there occurs connection failure, switching command is received to small with source according to the UE included in connection failure information The time that connection failure occurs for area is that to receive time of the switching command to successful switch to Target cell be 50ms by 10ms, UE, is counted Calculation, which obtains UE in the handoff procedure, 40ms of short duration service disconnection.

Step 808, source eNB are switched to the situation that of short duration service disconnection occurs in each adjacent area to UE and analyzed, and analysis is tied (as selected as far as possible, service disconnection is ofer short duration in handoff procedure or does not have for the foundation of selection target cell when fruit switches as follow-up UE The adjacent area of service disconnection), and/or as the foundation for consulting to adjust with neighboring interval mobility parameters (such as industry in handoff procedure Business interrupt ofer short duration or no service disconnection neighboring interval mobility parameters hold consultation adjustment when dynamics can be with slightly larger).

Preferred embodiment 4

Fig. 9 (a) is the schematic flow sheet one of the method provided according to the preferred embodiment of the present invention 4, and Fig. 9 (b) is according to this The schematic flow sheet two for the method that invention preferred embodiment 4 provides, as shown in Fig. 9 (a) and Fig. 9 (b), this method includes：

Step 901, UE are in the handoff procedure by source eNB cell-of-origins to target eNB Target cells, and UE is kept as far as possible and source The connection of cell, but there occurs connection failure for UE and cell-of-origin and Target cell.

Step 902, UE preserve connection failure information include cell-of-origin mark, Target Cell Identifier, re-establish cell ID, UE receive switching command to time (such as 20ms) of connection failure occurs with cell-of-origin, UE receive switching command to re-establish it is small The time (such as 100ms) that area is re-established.

Step 903, UE pass through RRCConnectionReestablishmentComplete or RRC Connection Setup Complete preserve the instruction of connection failure information to re-establishing or newly establish cell and send.

Step 904, re-establish or newly establish cell to UE transmission UE Information Request message.

Step 905, UE are preserved to re-establishing or newly establish cell and send UE Information Response message and carry Connection failure information.

Step 906, re-establish or newly establish the affiliated eNB of cell (being identified according to the cell-of-origin included in connection failure information) The connection failure information obtained from UE is sent to source eNB.

Step 907, source eNB learn UE in the switching by cell-of-origin to Target cell according to the UE connection failure information of acquisition During, with cell-of-origin and Target cell there occurs connection failure, and re-establish to beyond cell-of-origin and Target cell Re-establish cell.

Step S908, source eNB is switched to each adjacent area to UE and occurs that there occurs connection failure with cell-of-origin and Target cell And the situation for re-establishing cell is analyzed, when analysis result is switched as follow-up UE selection target cell according to (such as consult to adjust according to (such as prioritizing selection re-establishes cell), and/or as the foundation for consulting adjustment with neighboring interval mobility parameters Mobility parameters between Target cell to its switching slightly hardly possible, and/or negotiation so as to adjust the movement with re-establishing minizone Property parameter so as to its switching slightly easily).Source eNB can also keep in handoff procedure the time being connected with cell-of-origin to UE (UE i.e. in connection failure information receives switching command to the time that connection failure occurs with cell-of-origin, this example 20ms), UE With cell-of-origin there occurs connection failure to (UE i.e. in connection failure information is received with re-establishing the time that cell re-established Switching command receives switching command to the when m- UE re-established with re-establishing cell and connection failure occurs to cell-of-origin Time, this example 80ms) analyzed, keep in handoff procedure time for being connected with cell-of-origin shorter for UE, or UE with Should more it pay attention to re-establishing time that cell re-established longer situation there occurs connection failure cell-of-origin.

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.

Embodiment 2

Additionally provide a kind of optimization device of robustness in the present embodiment, the device is used to realizing above-described embodiment and excellent Embodiment is selected, had carried out repeating no more for explanation.As used below, term " module " can realize predetermined function Software and/or hardware combination.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.

Figure 10 is the structured flowchart of the optimization device of robustness according to embodiments of the present invention, as shown in Figure 10, the device Including：

Acquisition module 1002, for obtaining user equipment (UE) in the case where keeping being connected with cell-of-origin from cell-of-origin to mesh Mark the connection failure information in cell switch process；Wherein, connection failure information is used to indicate that UE and cell-of-origin and/or target are small There occurs connection failure in area；

Optimization module 1004, it is connected with above-mentioned acquisition module 1002, for logical according to where connection failure Advance data quality UE The mobile robustness of letter system.

Said apparatus, connection failure information is got by acquisition module 1002, optimization module 1004 is lost according to the connection The mobile robustness of communication system where losing Advance data quality UE, and then can solve the feelings in the switching for keeping being connected with cell-of-origin The problem of still being able to realize MRO functions well under condition, reach the effect of Enhanced MR O functions.

It should be noted that above-mentioned optimization module 1004 can be also used at least one of：According to connection failure information Adjust the selection priority of Target cell；Mobility parameters between cell-of-origin and Target cell are adjusted according to connection failure information.

It should be noted that the information indicated according to above-mentioned connection failure information is different, above-mentioned acquisition module 1002 obtains The mode of connection failure information is also different, detailed description below：

In one embodiment of the invention, above-mentioned acquisition module 1002 can be also used for being used to refer in connection failure information Showing UE, there occurs during connection failure, receive the message for carrying connection failure information that UE is sent with Target cell.

Above-mentioned acquisition module 1002 can be also used for sending request message to UE；And receive the response message that UE is sent； Wherein, connection failure information is carried in response message.It should be noted that above-mentioned connection failure information can include it is following at least One of：The mark of cell-of-origin, the mark of Target cell, for indicating that UE and cell-of-origin are always maintained at the finger being connected in handoff procedure Show information.

In one embodiment of the invention, above-mentioned acquisition module 1002 can be also used for being used to refer in connection failure information Show that UE, there occurs during connection failure, connection failure information is obtained from the target BS belonging to Target cell with cell-of-origin.It is i.e. above-mentioned Acquisition module 1002 obtains the connection failure information in UE by the forwarding of Target cell said target base station.

In one embodiment of the invention, above-mentioned acquisition module 1002 can be also used for being used to refer in connection failure information Show that UE, there occurs during connection failure, obtains with cell-of-origin and Target cell from re-establishing cell or newly establishing cell own base station Connection failure information.I.e. above-mentioned acquisition module 1002 undergoes reconstruction vertical cell or the new forwarding for establishing cell own base station obtains UE In connection failure information.

It should be noted that above-mentioned optimization module 1004 can be also used for keeping UE in handoff procedure connecting with cell-of-origin Time (UE i.e. in connection failure information receives switching command to the time that connection failure occurs with cell-of-origin), UE and the source connect Cell is there occurs connection failure to (UE i.e. in connection failure information receives switching with re-establishing the time that cell re-established Order time for being re-established with re-establishing cell to subtract UE and receive switching command and connection failure occurs to cell-of-origin Time) analyzed, keep in handoff procedure time for being connected with cell-of-origin shorter for UE, or UE and cell-of-origin there occurs Connection failure should more be paid attention to re-establishing time that cell re-established longer situation.

It should be noted that the optimization device of above-mentioned robustness can be located in source base station, but it is not limited to this.

In embodiments of the present invention, a kind of optimization device of robustness is additionally provided, Figure 11 is according to embodiments of the present invention The structured flowchart two of the optimization device of the robustness of offer, as shown in figure 11, the device includes：

Acquisition module 1102, in the case where keeping being connected with cell-of-origin, switching from cell-of-origin to Target cell Cheng Zhong, obtain for indicating that there occurs the connection failure information of connection failure with cell-of-origin and/or Target cell；

Sending module 1104, it is connected with above-mentioned acquisition module 1102, for connection failure information to be sent into cell-of-origin institute The source base station of category；Wherein, the mobile robustness of communication system where connection failure information is used for source base station optimization cell-of-origin.

Said apparatus, connection failure information can be sent to source base station by sending module 1104, and then can cause source base Connection failure information can be got by standing, can be according to the mobile robust of communication system where connection failure Advance data quality UE Property, and then can solve the problems, such as still to be able to realize MRO functions well in the case of the switching for keeping being connected with cell-of-origin, Reach the effect of Enhanced MR O functions.

It should be noted that connection failure information is used for the mobile robustness of source base station optimization cell-of-origin place communication system At least one of can be included：Connection failure information is used for the selection priority for adjusting Target cell；Connection failure information is used The mobility parameters between adjustment cell-of-origin and Target cell.

It should be noted that the difference according to above-mentioned connection failure information, above-mentioned sending module 1104 is by the connection failure The mode that information is sent to source base station is also different, introduces in detail below：

In one embodiment of the invention, above-mentioned sending module 1104 can be also used for being used to refer in connection failure information Show that UE, there occurs during connection failure, the message for carrying connection failure information is sent to cell-of-origin with Target cell.

Above-mentioned sending module 1104 can be also used for receiving the request message that cell-of-origin is sent；And send and ring to cell-of-origin Answer message；Wherein, connection failure information is carried in response message.I.e. above-mentioned sending module 1104 be able to will be connected by response message Connect failure information and be sent to source base station.

It should be noted that said apparatus can also include：Preserving module, it is connected, is used for above-mentioned acquisition module 1102 Preserve connection failure information；Second sending module is connected with above-mentioned preserving module, is additionally operable to send for indicating to protect to cell-of-origin There is the configured information of connection failure information.

In one embodiment of the invention, above-mentioned sending module 1104 can be also used for being used to refer in connection failure information Show that connection failure information, there occurs during connection failure, source base is transmitted to by Target cell said target base station by UE with cell-of-origin Stand.Connection failure information can also be transmitted to source base by i.e. above-mentioned sending module 1104 by Target cell said target base station Stand, it is necessary to illustrate, above-mentioned Target cell said target base station can be believed by receiving the connection failure that carries of UE transmissions The response message of connection failure information that what the message or UE of breath were sent carry obtains connection failure information.

It should be noted that above-mentioned preserving module can be also used for preserving the connection failure information；Above-mentioned second sends mould Block is additionally operable to send the configured information for preserving connection failure information for instruction to Target cell.

In one embodiment of the invention, above-mentioned sending module 1104 can be also used for being used to refer in connection failure information Show UE and cell-of-origin and Target cell there occurs during connection failure, by re-establishing cell or newly establishing cell own base station Connection failure information is transmitted to source base station.I.e. above-mentioned sending module 1104 can also be by re-establishing cell or newly establishing small Connection failure information is transmitted to source base station, it is necessary to which explanation, above-mentioned to re-establish cell or newly establish small by area's own base station Area's own base station can obtain connection failure information by receiving the response message of UE transmissions.

It should be noted that above-mentioned preserving module can be also used for preserving the connection failure information；Above-mentioned second sends mould Block is additionally operable to re-establishing cell or new cell of establishing sends configured information for indicating to preserve connection failure information.

It should be noted that above-mentioned connection failure information can also include at least one of：Mark, the target of cell-of-origin The mark of cell, re-establish cell or newly establish the mark of cell, UE receive switching command to cell-of-origin occur connection failure Time, UE receive switching command to re-establish cell re-established or to newly establish that cell established when Between.

It should be noted that the device shown in above-mentioned Figure 11 can be located in terminal, but it is not limited to this.

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.

Embodiment 3

The embodiment of the present invention, there is provided a kind of optimization system of robustness, including user equipment (UE) and source base station, keeping In the case of being connected with the cell-of-origin of source base station subordinate, from cell-of-origin into Target cell handoff procedure, UE is obtained for indicating With cell-of-origin and/or Target cell source is sent to there occurs the connection failure information of connection failure, and by connection failure information Base station；Source base station is used to receive the connection failure information of UE transmissions and the communication system according to where connection failure Advance data quality UE Mobile robustness.

In one embodiment of the invention, said system can also include target BS；Target BS is used to obtain UE The connection failure information taken is transmitted to source base station.

In one embodiment of the invention, said system can also include re-establishing cell or new base where establishing cell Stand；Re-establish cell or new cell place base station of establishing is used to the connection failure information that UE is obtained being transmitted to source base station.

Embodiment 4

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can To be arranged to the program code for the step of storage is used to perform the method in embodiment 1.

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

Alternatively, in the present embodiment, processor is performed in embodiment 1 according to the program code stored in storage medium Method the step of.

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. optimization method of robustness, it is characterised in that including：

Acquisition user equipment (UE) is in the case where keeping being connected with cell-of-origin from the cell-of-origin into Target cell handoff procedure Connection failure information；Wherein, the connection failure information is used to indicate that the UE and the cell-of-origin and/or the target are small There occurs connection failure in area；

According to the mobile robustness of communication system where UE described in the connection failure Advance data quality.
2. according to the method for claim 1, it is characterised in that logical according to where UE described in the connection failure Advance data quality The mobile robustness of letter system includes at least one of：

The selection priority of the Target cell is adjusted according to the connection failure information；

Mobility parameters between the cell-of-origin and the Target cell are adjusted according to the connection failure information.
3. according to the method for claim 1, it is characterised in that be used to indicate the UE and institute in the connection failure information Target cell is stated there occurs during connection failure, acquisition user equipment (UE) is cut while keeping being connected with cell-of-origin to Target cell Connection failure information when changing includes：

Receive the message for carrying the connection failure information that the UE is sent.
4. according to the method for claim 3, it is characterised in that the connection failure information includes at least one of：

The mark of the cell-of-origin, the mark of the Target cell, for indicating UE described in handoff procedure and the cell-of-origin It is always maintained at the configured information of connection.
5. according to the method for claim 1, it is characterised in that be used to indicate the UE and institute in the connection failure information Stating cell-of-origin, there occurs during connection failure, obtain user equipment (UE) while keeping being connected with cell-of-origin to Target cell switching When connection failure information include：

The connection failure information is obtained from the target BS belonging to the Target cell.
6. according to the method for claim 5, it is characterised in that the connection failure information in the target BS is from described Obtained in UE.
7. the method according to claim 5 or 6, it is characterised in that the connection failure information includes at least one of：

The mark of the cell-of-origin, the mark of the Target cell, the UE receive switching command and occurred to the cell-of-origin The time of connection failure, the UE receive time of the switching command to successful switch to the Target cell.
8. according to the method for claim 1, it is characterised in that be used to indicate the UE and institute in the connection failure information Cell-of-origin and the Target cell are stated there occurs during connection failure, acquisition user equipment (UE) is connected same in holding with cell-of-origin When to Target cell switch when connection failure information include：

The connection failure information is obtained from re-establishing cell or newly establishing cell own base station.
9. according to the method for claim 8, it is characterised in that the connection failure information includes at least one of：

The identifying of the cell-of-origin, the mark of the Target cell, re-establish cell or it is new establish the identifying of cell, the UE is received To switching command to time of connection failure occurs with the cell-of-origin, the UE receive switching command to it is described re-establish it is small Area re-established or to the new time established cell and established.
A kind of 10. optimization method of robustness, it is characterised in that including：

In the case where keeping being connected with cell-of-origin, from the cell-of-origin into Target cell handoff procedure, obtain for indicating There occurs the connection failure information of connection failure with the cell-of-origin and/or the Target cell；

The connection failure information is sent to the source base station belonging to the cell-of-origin；Wherein, the connection failure information is used for The mobile robustness of communication system where the source base station optimizes the cell-of-origin.
11. according to the method for claim 10, it is characterised in that the connection failure information optimizes for the source base station The mobile robustness of communication system includes at least one of where the cell-of-origin：

The connection failure information is used for the selection priority for adjusting Target cell；

The connection failure information is used to adjust mobility parameters between the cell-of-origin and the Target cell.
12. according to the method for claim 10, it is characterised in that the connection failure information be used for indicate the UE with The connection failure information is sent to the source base station bag belonging to the cell-of-origin by the Target cell there occurs during connection failure Include：

The message for carrying the connection failure information is sent to the cell-of-origin.
13. according to the method for claim 12, it is characterised in that carry the connection mistake being sent to the cell-of-origin Before losing the message of information, methods described also includes：

Preserve the connection failure information；

The configured information that the connection failure information is preserved for instruction is sent to the cell-of-origin.
14. the method according to claim 12 or 13, it is characterised in that the connection failure information include it is following at least it One：

The mark of the cell-of-origin, the mark of the Target cell, for indicating UE described in handoff procedure and the cell-of-origin It is always maintained at the configured information of connection.
15. according to the method for claim 10, it is characterised in that the connection failure information be used for indicate the UE with The connection failure information is sent to the source base station bag belonging to the cell-of-origin by the cell-of-origin there occurs during connection failure Include：

The connection failure information is transmitted to by the source base station by Target cell said target base station.
16. according to the method for claim 15, it is characterised in that by Target cell said target base station by the company Connect failure information to be transmitted to before the source base station, methods described also includes：

Preserve the connection failure information；The finger that the connection failure information is preserved for instruction is sent to the Target cell Show information；And/or

The message for carrying the connection failure information is sent to the Target cell.
17. the method according to claim 15 or 16, it is characterised in that the connection failure information include it is following at least it One：

The mark of the cell-of-origin, the mark of the Target cell, the UE receive switching command and occurred to the cell-of-origin The time of connection failure, the UE receive time of the switching command to successful switch to the Target cell.
18. according to the method for claim 10, it is characterised in that the connection failure information be used for indicate the UE with The connection failure information is sent to the cell-of-origin by the cell-of-origin and the Target cell there occurs during connection failure Affiliated source base station includes：

By re-establishing cell or new establishing cell own base station the connection failure information is transmitted into the source base station.
19. according to the method for claim 18, it is characterised in that by re-establishing cell or newly establishing belonging to cell Before the connection failure information is transmitted to the source base station by base station, methods described also includes：

Preserve the connection failure information；

Cell is re-established to described or the new cell of establishing is sent for indicating to preserve the finger of the connection failure information Show information.
20. the method according to claim 18 or 19, it is characterised in that the connection failure information include it is following at least it One：

The identifying of the cell-of-origin, the mark of the Target cell, re-establish cell or it is new establish the identifying of cell, the UE is received To switching command to time of connection failure occurs with the cell-of-origin, the UE receive switching command to it is described re-establish it is small Area re-established or to the new time established cell and established.
A kind of 21. optimization device of robustness, it is characterised in that including：

Acquisition module, for obtain user equipment (UE) keep be connected with cell-of-origin in the case of it is small from the cell-of-origin to target Connection failure information in area's handoff procedure；Wherein, the connection failure information be used to indicating the UE and the cell-of-origin and/ Or there occurs connection failure for the Target cell；

Optimization module, the mobile robustness for communication system where the UE according to the connection failure Advance data quality.
22. device according to claim 21, it is characterised in that the optimization module is used at least one of：According to The connection failure information adjusts the selection priority of the Target cell；It is small that the source is adjusted according to the connection failure information Mobility parameters between area and the Target cell.
23. device according to claim 21, it is characterised in that the acquisition module is additionally operable to believe in the connection failure Cease that there occurs during connection failure, receive that the UE sends for indicating the UE and the Target cell to carry the connection The message of failure information.
24. device according to claim 23, it is characterised in that the connection failure information includes at least one of：

The mark of the cell-of-origin, the mark of the Target cell, for indicating UE described in handoff procedure and the cell-of-origin It is always maintained at the configured information of connection.
25. device according to claim 21, it is characterised in that the acquisition module is additionally operable to believe in the connection failure Cease for indicating that the UE, there occurs during connection failure, obtains with the cell-of-origin from the target BS belonging to the Target cell The connection failure information.
26. device according to claim 25, it is characterised in that the connection failure information includes at least one of：

The mark of the cell-of-origin, the mark of the Target cell, the UE receive switching command and occurred to the cell-of-origin The time of connection failure, the UE receive time of the switching command to successful switch to the Target cell.
27. device according to claim 21, it is characterised in that the acquisition module is additionally operable to believe in the connection failure Cease for indicating the UE and the cell-of-origin and the Target cell there occurs during connection failure, from re-establishing cell or new Establish cell own base station and obtain the connection failure information.
28. device according to claim 27, it is characterised in that the connection failure information includes at least one of：

The identifying of the cell-of-origin, the mark of the Target cell, re-establish cell or it is new establish the identifying of cell, the UE is received To switching command to time of connection failure occurs with the cell-of-origin, the UE receive switching command to it is described re-establish it is small Area re-established or to the new time established cell and established.
A kind of 29. optimization device of robustness, it is characterised in that including：

Acquisition module, in the case of being connected in holding with cell-of-origin, from the cell-of-origin into Target cell handoff procedure, Obtain for indicating that there occurs the connection failure information of connection failure with the cell-of-origin and/or the Target cell；

Sending module, for the source base station being sent to the connection failure information belonging to the cell-of-origin；Wherein, the connection Failure information is used for the mobile robustness of communication system where the source base station optimizes the cell-of-origin.
30. device according to claim 29, it is characterised in that the connection failure information optimizes for the source base station The mobile robustness of communication system includes at least one of where the cell-of-origin：

The connection failure information is used for the selection priority for adjusting Target cell；

The connection failure information is used to adjust mobility parameters between the cell-of-origin and the Target cell.
31. device according to claim 29, it is characterised in that the sending module is additionally operable to believe in the connection failure Cease for indicating that the UE, there occurs during connection failure, sends to the cell-of-origin with the Target cell and carries the connection The message of failure information.
32. device according to claim 31, it is characterised in that the connection failure information includes at least one of：

The mark of the cell-of-origin, the mark of the Target cell, for indicating UE described in handoff procedure and the cell-of-origin It is always maintained at the configured information of connection.
33. device according to claim 30, it is characterised in that the sending module is additionally operable to believe in the connection failure Cease for indicating the UE and the cell-of-origin there occurs during connection failure, by Target cell said target base station by the company Connect failure information and be transmitted to the source base station.
34. device according to claim 33, it is characterised in that the connection failure information includes at least one of：

The mark of the cell-of-origin, the mark of the Target cell, the UE receive switching command and occurred to the cell-of-origin The time of connection failure, the UE receive time of the switching command to successful switch to the Target cell.
35. device according to claim 31, it is characterised in that the sending module is additionally operable to believe in the connection failure Cease for indicating the UE and the cell-of-origin and the Target cell there occurs during connection failure, by re-establish cell or Person newly establishes cell own base station and the connection failure information is transmitted into the source base station.
36. device according to claim 35, it is characterised in that the connection failure information includes at least one of：

The identifying of the cell-of-origin, the mark of the Target cell, re-establish cell or it is new establish the identifying of cell, the UE is received To switching command to time of connection failure occurs with the cell-of-origin, the UE receive switching command to it is described re-establish it is small Area re-established or to the new time established cell and established.
37. a kind of optimization system of robustness, including user equipment (UE) and source base station, it is characterised in that keeping and the source In the case of the cell-of-origin connection of base station subordinate, from the cell-of-origin into Target cell handoff procedure, the UE, which is obtained, to be used for Instruction with the cell-of-origin and/or the Target cell there occurs the connection failure information of connection failure, and by the connection Failure information is sent to the source base station；The source base station is used to receive the connection failure information and the root that the UE is sent According to the mobile robustness of communication system where UE described in the connection failure Advance data quality.
38. the system according to claim 37, it is characterised in that the system also includes target BS；The target base The connection failure information for the UE to be obtained of standing is transmitted to the source base station.
39. the system according to claim 37, it is characterised in that the system also includes re-establishing cell or newly establishing small Base station where area；It is described to re-establish cell or the new connection failure information turn established cell place base station and be used to obtain the UE Issue the source base station.