CN105052204A

CN105052204A - Cell handover method and device, and network system

Info

Publication number: CN105052204A
Application number: CN201380003115.XA
Authority: CN
Inventors: 卢劭薇; 李军
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-12-09
Filing date: 2013-12-09
Publication date: 2015-11-11
Also published as: WO2015085471A1

Abstract

Disclosed are a cell handover method and device, and a system, which relate to the field of communications and can reduce a call drop rate during a handover in the case where an uplink and a downlink are unbalanced. The specific realization method comprises: receiving, by a radio network controller (RNC), a measurement report reported by a user equipment (UE); acquiring measurement data obtained by a base station performing measurement on an uplink channel of the UE; executing a handover judgement on the basis of the measurement report reported by the UE and the measurement data of the uplink channel of the UE; and completing a cell handover by interacting with the base station and the UE when a judgement result is that a handover is required. The present invention is applicable in a soft handover.

Description

Cell handover method and device, and network system

A kind of cell switching method, equipment and network system technical field

The present invention relates to the communications field, more particularly to a kind of cell switching method, equipment and network system.Background technology

In existing wireless communications system, when the load difference between two neighbouring cells is larger, network side is generally by the switching to cell come the load of each cell of active accommodation, so as to which the user equipment (User Equipment, UE) of heavier loads cell is linked into light load cell using the switching of minizone.Do not interrupted conventionally, as soft handover enables to user to be communicated during Yue Qu, and link newly can be higher, therefore, existing switching typically uses soft handover, and soft handover is commonly referred to as the switching between co-frequency cell.Wherein, the idiographic flow of soft handover is：UE completes the measurement to neighbor cell down-bound pilot frequency signal intensity under the control of network side, and the measurement report of generation is reported into radio network controller (Radio Network Controller, RNC).RNC switches over judgement to UE according to the measurement report received.Wherein, above-mentioned switch decision includes deciding whether to increase, delete or replace Radio Link.If court verdict to perform switching, is increased by Radio Link, or Radio Link the process completion such as is deleted and switched.Otherwise, then do not increase, delete or replace Radio Link, and terminate currently processed flow.Specifically, the type of above-mentioned measurement report is reported for event, including the cell switching events such as 1A, 1 B, 1 C, 1 D, 1 E, I F are reported.Wherein, 1A is that relative threshold increases event, represents the quality of a cell already close to best cell or active set quality；1 B is relative threshold deletion event, represents that the quality of a cell is more far short of what is expected than best cell or active set quality；1 C is replacement event, represents that cell of the cell than active set is good；1 D is best cell change events；1 E is that measured value is higher than absolute threshold event；1 F is that measured value is less than absolute threshold event.RNC can switch over judgement to UE according to the combination of various events or various events.For example, when UE detects the down-bound pilot frequency signal intensity measurements and cell 2 of cell 1 in active set The differences of down-bound pilot frequency signal intensity measurements be more than（Report threshold AS-Th+ deletes hysteresis threshold AS-Th-Hyst) and when continuing Δ T time, carry out the report of 1 B events.Wherein, cell 1 is the best cell of down-bound pilot frequency signal intensity in active set.RNC according to the 1 B events delete the switch decision of cell 2, and cell 2 is removed into active set.Wherein, the process for cell being removed into active set namely deletes the process of the Radio Link of the cell, referred to as deletes chain.

In above-mentioned soft switching process, the measurement report that UE is reported depends only on signal qualitys of the UE to down channel, e.g., received signal code power（Received Signal Code Power, RSCP), Ec/N0 etc. measurement.So, for 1 B, 1 C it is this kind of can trigger delete chain operation event will there are the following problems：When former cell and uneven the two cell up-downgoings of Target cell, that is the link uplink signal-channel quality difference of Target cell is poorer than former cell, but the former cell uplink quality of the downlink channel ratio of Target cell is good, so result in and meet the condition for reporting deletion event and former cell is carried out to delete chain, but simultaneously after former cellular link is deleted, due to the up channel poor performance of Target cell, so as to cause UE call drops after the completion of the handover.Content of the invention embodiments of the invention provide a kind of cell switching method, equipment and network system, can reduce cutting off rate during cell switching in the case of up-downgoing is unbalanced.

First aspect there is provided a kind of radio network controller (RNC), including：

Receiving unit, the measurement report for receiving reported by user equipment UE；

Acquiring unit, obtained measurement data is measured for obtaining base station to the up channel of the UE；

Decision unit, the measurement data obtained for the measurement report received based on the receiving unit and the acquiring unit performs switch decision；

Switch unit, for the court verdict in the decision unit to need during switching, cell switching is completed by being interacted with the base station and the UE.

In the first possible implementation of first aspect, the measurement report includes small Area's handover event；The decision unit includes：

Whether the first judge module, the execution condition for the cell switching event is satisfied；

Second judge module, for judging whether the UE is in credible scope in the up channel of purpose cell according to the measurement data；

Determination module, for determining that the execution condition of the cell switching event is satisfied in first judge module, and second judge module determines that the UE when the up channel of the purpose cell is in credible scope, then judges to need switching.

With reference to the first possible implementation of first aspect, in second of possible implementation of first aspect：

Second judge module specifically for：The UE is obtained in purpose cell and the signal-to-noise ratio SIR of the up channel of former cell according to the measurement data, judge whether SIRs and the UE of the UE in the up channel of the purpose cell reach pre-determined threshold in the SIR of the up channel of former cell ratio, if reaching the pre-determined threshold, the UE is in credible scope in the up channel of the purpose cell.

Second aspect there is provided a kind of base station, including：

Measuring unit, measures for the up channel to user equipment (UE), obtains the measurement data of the up channel of the UE；

Reporting unit, the measurement data for the up channel for the UE for measuring the measuring unit reports to radio network controller (RNC), so that the RNC performs switch decision according to the measurement data；

Receiving unit, for receiving the switching command that the RNC is sent after judging that the UE needs to switch；

Switch unit, the switching command for being received according to the receiving unit completes the handover operation of link layer.

In the first possible implementation of second aspect；

The receiving unit, is additionally operable to receive the instruction message that the RNC is sent；It is wherein described to indicate that message is used for the measurement data for indicating the up channel that the base station obtains the UE； The measuring unit, after the instruction message that the receiving unit is received, performs the operation that the up channel to the UE is measured.

With reference to the first possible implementation of second aspect or second aspect, in second of possible implementation of second aspect：

The measurement data of the up channel of the UE includes the signal-to-noise ratio SIR or signal-to-noise ratio deviation SIRerr of the active set of the UE and the up channel of each cell of monitoring concentration.

The third aspect there is provided a kind of user equipment (UE), including：

Measuring unit, is measured for the signal quality to down channel；

When acquiring unit, trigger condition for meeting cell switching event when the result that the measuring unit is measured, the uplink power control word of former cell and purpose cell is obtained；

Judging unit, judges whether the UE is in believable scope in the up channel of the purpose cell for being compared by the uplink power control word to former cell and purpose cell；Reporting unit, for determining that after the up channel of the purpose cell is in believable scope, the measurement report comprising cell switching event is reported to radio network controller (RNC) by the UE in the judging unit.

In the first possible implementation of the third aspect：

The judging unit specifically for：Compare the size of the uplink power control word of the former cell and the purpose cell, if the uplink power control word of the former cell is more than the uplink power control word of the purpose cell, judge that the UE is in believable scope in the up channel of the purpose cell.

Fourth aspect there is provided a kind of radio network controller (RNC), including：

Communication interface, for being communicated with ext nal network element；

Processor, is used for：

The measurement report of reported by user equipment UE is received by the communication interface；Base station is obtained by the communication interface obtained measurement data is measured to the up channel of the UE；

The measurement data of up channel based on the shown UE measurement reports reported and the UE performs switch decision； In court verdict to need during switching, completion cell is interacted with the base station and the UE by the communication interface and switched.

There is provided a kind of base station in terms of 5th, including：

Communication interface, for being communicated with ext nal network element；

Processor, is used for：

The up channel of user equipment (UE) is measured, the measurement data of the up channel of the UE is obtained；

The measurement data of the up channel of the UE is reported to by radio network controller (RNC) by the communication interface, so that the RNC performs switch decision according to the measurement data；

The switching command that the RNC is sent after judging that the UE needs to switch is received by the communication interface；

The handover operation of link layer is completed according to the switching command.

There is provided a kind of user equipment (UE) in terms of 6th, including：

Communication interface, for being communicated with ext nal network element；

Processor, is used for：

The signal quality of down channel is measured；

When the result of measurement meets the trigger condition of cell switching event, the uplink power control word of former cell and purpose cell is obtained；

It is compared by the uplink power control word to former cell and purpose cell and judges whether the UE is in believable scope in the up channel of the purpose cell；

If the UE is in believable scope in the up channel of the purpose cell, the measurement report comprising cell switching event is reported to radio network controller (RNC) by the communication interface.

There is provided a kind of cell switching method in terms of 7th, including：

Radio network controller (RNC) receives the measurement report of reported by user equipment UE；Obtain base station and obtained measurement data is measured to the up channel of the UE；The measurement data of up channel based on the UE measurement reports reported and the UE performs switch decision； In court verdict to need during switching, cell switching is completed by being interacted with the base station and the UE.

In the first possible implementation of the 7th aspect,

The measurement report includes cell switching event；

The measurement data of the up channel based on the shown UE measurement reports reported and the UE, which performs switch decision, to be included：

The RNC judges whether the execution condition of the cell switching event is satisfied, and judges whether the UE is in credible scope in the up channel of purpose cell according to the measurement data；

It is determined that the execution condition of the cell switching event be satisfied and the UE the purpose cell up channel be in credible scope when, judgement need switching.

With reference to the first possible implementation of the 7th aspect, in second of possible implementation of the 7th aspect：

It is described to judge whether the UE specifically includes in the up channel of the purpose cell in credible scope according to the measurement data：

The UE is obtained in purpose cell and the signal-to-noise ratio SIR of the up channel of former cell according to the measurement data, judge whether SIRs and the UE of the UE in the up channel of the purpose cell reach pre-determined threshold in the SIR of the up channel of former cell ratio, if reaching the pre-determined threshold, the UE is in credible scope in the up channel of the purpose cell.

Eighth aspect there is provided a kind of cell switching method, including：

Base station is measured to the up channel of user equipment (UE), obtains the measurement data of the up channel of the UE；

The measurement data of the up channel of the UE is reported into radio network controller (RNC), so that the RNC performs switch decision according to the measurement data；

The base station receives the switching command that the RNC is sent after judging that the UE needs to switch；

There is provided a kind of cell switching method in terms of 9th, including： User equipment (UE) is measured to the signal quality of down channel；

When the result of measurement meets the trigger condition of cell switching event, the UE obtains the uplink power control word of former cell and purpose cell；

If the UE is in believable scope in the up channel of the purpose cell, then the UE reports the measurement report for including the cell switching event to radio network controller (RNC), so that the RNC performs switch decision according to the cell switching event.

In the first possible implementation of the 9th aspect,

Described be compared by the uplink power control word to former cell and purpose cell judges whether the UE specifically includes in the up channel of purpose cell in believable scope：

Compare the size of the uplink power control word of the former cell and the purpose cell, if the uplink power control word of the former cell is more than the uplink power control word of the purpose cell, the UE judges that the UE is in believable scope in the up channel of the purpose cell.

Cell switching method, equipment and network system that embodiments of the invention are provided, be on the basis of considering to the quality of the quality of UE down channel and upper lower channel realize cell switch, compared to prior art only by the measurement of the downlink channel signals to UE come the judgement to former cell, the present invention can be when the unbalanced scene of up-downgoing declines low switching cutting off rate, while improving Consumer's Experience.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.

The schematic network structure for realizing cell switching that Fig. 1 provides for embodiments of the invention； A kind of structural representation for RNC that the schematic flow sheet 6 for another cell switching method that the schematic flow sheet 5 for another cell switching method that the schematic flow sheet 4 for another cell switching method that a kind of schematic flow sheet 3 for cell switching method that Fig. 2 provides for embodiments of the invention provides for embodiments of the invention provides for embodiments of the invention provides for embodiments of the invention provides for embodiments of the invention；The structural representation for another RNC that Fig. 7 provides for embodiments of the invention；A kind of structural representation for base station that Fig. 8 provides for embodiments of the invention；A kind of structural representation for user equipment that Fig. 9 provides for embodiments of the invention；A kind of structural representation for RNC that Figure 10 provides for another embodiment of the present invention；A kind of structural representation for base station that Fig. 11 provides for another embodiment of the present invention；A kind of structural representation for user equipment that Figure 12 provides for another embodiment of the present invention

Embodiment is below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

Fig. 1 is the schematic network structure that cell switching is realized in mobile communications network.Wherein, above-mentioned mobile communications network can be 2/3 G (second generation partner programs（The Second Generation, abbreviation 2G)/third generation cooperative partner program（The Third Generation Partnership Proj ect, referred to as 3 G)) network or 4G (forth generation cooperation group With project）Network or other networks with similar handoff scenario.As shown in Fig. 1, the mobile communications network includes network system 1 and user equipment（ User Equipment , UE ) 2.Wherein, network system 1 includes：Radio network controller（Radio Network Controller, RNC) 11 and base station 12.It should be noted that Fig. 1 is only exemplary explanation, RNC can connect one or more base stations in actual networking.Switching in the embodiment of the present invention can occur in the minizone of same base station（Cell 1 as shown in Figure 1 and cell 2), can also occur in the minizone of different base station.Cell switching between UE2 and base station 12 is controlled by the RNC 11 being connected with base station 12.

Cell switching mainly includes handover measurement, switch decision, switching execution three phases.Wherein, the measurement result in handover measurement stage is as the input of switch decision, and the switch decision stage judges whether to perform switching according to the measurement result in handover measurement stage, if court verdict is to perform switching, then enter handover execution stage, otherwise, terminate switching flow.

Wherein, cell is a logical concept, is divided according to the signal cover of base station, and a base station can have at least one cell.Cell can be divided into the set such as active set, monitoring collection or unlisted collection by the relation according to service is provided for UE.Wherein, active set be current service cell set, including it is one or more for UE provide service cell.Monitoring collection is may participate in switching under surveillance, hence into the set of cells to UE active sets.Unlisted collection collects not to be put into active set and monitoring, but is likely to become the set of cells of switching cell.Wherein, the process for performing switching is exactly that UE active set or monitoring collection are updated, such as, cell by cell quality already close to best cell or active set quality increases in active set, or the more cell more of poor quality than best cell or active set of quality in active set is removed into active set etc..This process includes a series of signaling procedure, is completed by being increased Radio Link, being deleted or being replaced.Wherein, the replacement operation of Radio Link is the combination of increase and the deletion of Radio Link.

Based on the network structure shown in Fig. 1, solved the embodiments of the invention provide two ways under the uneven scene of up-downgoing, due to Special Handle of Drop Question caused by cell switching.

Mode 1:UE2 is measured under RNC 11 control to the signal quality of down channel.When the result of measurement meets the trigger condition of cell switching event, UE2 is to the reporting measurement reports of RNC 11.After UE2 measurement report is received, RNC 11 further obtains base The measurement data stood to UE2 up channel, the measurement data of the up channel based on the UE2 measurement reports reported and UE2 switches over judgement, rule out need switching when, perform switching.

Wherein, RNC 11 can start the up special measurement of base station to obtain measurement data, it would however also be possible to employ privately owned interface asks measurement data to base station 12.Specifically implementation procedure can be：RNC 11 sends to base station 12 and indicates message, indicates that base station 12 is measured to UE2 up channel, and the measurement data measured is received from base station 12；Or, the active reporting of base station 12 is to the measurement data of UE2 up channel, and RNC 11 is after UE2 measurement report is received, the measurement data of the up channel for the UE2 that acquisition the last time of base station 12 reports.

In the manner, RNC 11 further contemplates quality of the UE2 in the up channel of each cell during switch decision is performed, it is to avoid the problem of causing call drop after switching due to up-downgoing imbalance.

Mode 2:UE2 is measured under RNC 11 control to the signal quality of down channel.When the result of measurement meets the trigger condition of cell switching event, UE further obtains the power control word up and down of former cell and purpose cell.UE2 is compared by the uplink power control word to former cell and purpose cell judges whether the up channel of purpose cell is in believable scope.UE2 is only when the up channel of purpose cell is in believable scope, to the reporting measurement reports of RNC 11.RNC 11 switches over judgement based on the measurement report that UE2 is reported, rule out need switching when, perform switching.

In the manner, consideration purpose cell and the uplink signal-channel quality of former cell that UE2 takes a step forward in reporting measurement reports, the ability reporting measurement reports only in the case of the up channel of purpose cell is believable, therefore, even if RNC 11 does not consider the quality of up channel when performing switch decision, the problem of will not also causing call drop after switching.

Aforesaid way one is by transforming existing RNC and base station, to realize the purpose of the present invention.Wherein, the function that the function of measurement data and the quality to UE up channel in switch decision of the up channel for obtaining UE are judged is added in RNC.The function for the data for measuring and being arrived to RN C reporting measurements to the quality of UE up channel is then added in a base station.For RNC provided in an embodiment of the present invention and base station Structure is schemed, 10, Fig. 11 parts describe in detail, repeated no more here by Fig. 6, Fig. 7, Fig. 8.

Mode two is by transforming existing UE, to realize the purpose of the present invention.Wherein, the function of the Quality estimation to upper lower channel is added in UE.For UE provided in an embodiment of the present invention structure by Fig. 9, Figure 12 parts describe in detail, repeated no more here.Fig. 2 provides cell switching method for embodiments of the invention, can apply in the network system as shown in Fig. 1 and be realized by wireless network control RNC.As shown in Fig. 2 the cell switching method specifically includes following steps：

201st, radio network controller (RNC) receives the measurement report of reported by user equipment UE.After UE enters CELL-DCH connection modes, RNC can order UE to be measured to cell quality and carry out cell switching event report to UE sending measuring control signalings.Wherein, the triggering thresholding of cell switching event is included in measurement control signaling.UE starts measurement after the measurement control signaling is received, and meets the trigger gate of cell switching event and prescribe a time limit, to RNC reporting measurement reports.

Under normal circumstances, above-mentioned measurement process is that UE down channel is measured, including the active set to UE and monitoring concentrate the signal quality of the down channel of each cell to measure.Specifically, can be to received signal code power（Received Signal Code Power, RSCP) or pilot frequency intensity Ec/Io measurement, and RSCP or Ec/Io here is a kind of possible example.

In the present embodiment, step 201 can be realized using prior art, be repeated no more here.

202nd, obtain base station and obtained measurement data is measured to UE up channel.The process that RN C acquisitions base station measures obtained measurement data to U E up channel specifically may include：RNC sends to base station and indicates message, indicates that base station is measured to UE up channel, and the measurement data measured is received from base station.Or, timing active reporting in base station is to the measurement data of UE up channel, and RNC is after UE measurement report is received, the measurement data of the up channel for the UE that acquisition base station the last time reports.

Specifically, RNC can be performed directly after the measurement report that UE is reported is received Step 202.Certainly, RNC can also select, only for certain class cell switching event, just to require purpose cell uplink channel quality.In the case, RNC recognizes whether the cell switching event in measurement report is to need the event of requirement uplink signal-channel quality after measurement report is received, first；If so, then performing step 202;Otherwise, it is directly based upon measurement report and switches over judgement.For example, the event that the embodiment of the present invention can delete chain operation to that can trigger increases the requirement to uplink signal-channel quality.RN C are received judges whether the measurement report is that can trigger the event report for deleting chain operation first after measurement report, if so, then obtaining base station measures rear resulting measurement data to UE up channel.It should be noted that will trigger for convenience, in the embodiment of the present invention delete chain operation event be referred to as delete link event.Wherein, it can be specifically events of B 1 in the soft handover in 1 B or 1 C events in the soft handover in 3G network etc. or 4G networks etc. to delete link event.

Wherein, the measurement data of above-mentioned UE up channel includes but is not limited to：The uplink channel signals quality of each cell, and associated pilot energy are concentrated in active set and monitoring；And above-mentioned uplink channel signals quality generally passes through signal-to-noise ratio（Signalto Interference Ratio, SIR) represent.

203rd, RNC is based on UE>Measurement 4 it is blunt announcement and UE upper lower channel measurement data perform switch decision.

Specifically, RNC is based on UE>Measurement 4 it is blunt announcement and UE upper lower channel measurement data perform switch decision detailed process may include：RNC judges whether the execution condition of cell switching event is satisfied, and judges whether UE is in credible scope in the up channel of purpose cell according to measurement data；It is determined that the execution condition of cell switching event be satisfied and UE the purpose cell up channel be in credible scope when, judgement need switching.

Wherein, the execution condition of cell switching event can use the execution condition in existing switch decision.RNC judges whether the execution condition of cell switching event is satisfied can also be judged using judgement means of the prior art.Such as, when the cell switching event in measurement report is deletes link event, 1 judgement can whether be more than to the number of cells in UE active set according to the existing judgement flow execution for deleting link event.RNC determines that the number of cells in UE active set is more than 1, then thinks that the execution condition of the deletion link event is satisfied.

RNC judges that UE can whether the up channel of purpose cell is according to measurement data Letter scope specifically may include：RNC obtains UE in purpose cell and the signal-to-noise ratio SIR of the up channel of former cell according to measurement data, judge whether SIRs and UE of the UE in the up channel of purpose cell reach pre-determined threshold in the SIR of the up channel of former cell ratio, if reaching the pre-determined threshold, then it is assumed that UE is in credible scope in the up channel of purpose cell.

Wherein, the measurement data of UE up channel includes the SIR or signal-to-noise ratio deviation SIRerr of the active set of the UE and the up channel of each cell of monitoring concentration.When measurement data include be SIR when, RNC can directly obtain UE in purpose cell and the SIR of the up channel of former cell from measurement data.When measurement data include be SIRerr when, RNC can be calculated using SIR=sir target value SIRtarget-SIRerr obtains UE in purpose cell and the SIR of the up channel of former cell.SIR refers to the measured value of signal-to-noise ratio under normal circumstances, and SIRtarget is the sir value for expecting to receive at UE.

It should be noted that former cell and purpose cell can be one or more.Such as, when cell switching event is 1A events, then cell in UE active set is former cell, can be one or more；The cell for preparing to be added in active set is purpose cell.And when cell switching event is 1 B events, then the cell for preparing to remove from active set is former cell, and remaining cell is purpose cell in active set, wherein, purpose cell can be one or more.When former cell or purpose cell are multiple, when obtaining SIR, it can be the average value of multiple cells, or take the best SIR or worst SIR in the plurality of cell.When implementing, it can be selected as needed.

204th, when court verdict is that UE needs switching, cell switching is completed by being interacted with base station and UE.

Specifically, when the measurement data of the RNC UE reported according to base station up channel judges to need to carry out deleting radio link operation, then RNC issues switching command respectively to base station and UE, so that base station and UE are performed after the switching command is received and switched accordingly.Wherein, base station can carry out the increase of Radio Link according to the switching command, delete or replace.U E can update active set after the switching command is received according to the switching command.

Step 204 can be realized according to prior art, be repeated no more here.

The cell switching method that embodiments of the invention are provided, RNC is by reporting to UE The synthetic determination of the measurement data of the up channel for the UE that the measurement report of UE down channel and base station are reported, so as to know whether the operation for needing to carry out former cell deleting radio link, compared to prior art only by the measurement of the downlink channel signals to UE come the judgement to former cell, the present invention can be when the unbalanced scene of up-downgoing declines low switching cutting off rate, while improving Consumer's Experience.It is corresponding with the cell switching method shown in Fig. 2, a kind of cell switching method provided in an embodiment of the present invention will be illustrated from the angle of base station below.

Fig. 3 provides a kind of cell switching method for embodiments of the invention, can apply in the network system as shown in Fig. 1, and is performed by base station, as shown in Fig. 3, and the cell switching method specifically includes following steps：

301st, base station is measured to the up channel of user equipment (UE), obtains the measurement data of UE up channel.

Wherein, base station can start according to RNC instruction measures and reports, can also timing active reporting.

Base station according to RNC instruction come start measure and report when, can further include before step 301：Base station receives the instruction message that RNC is sent；The instruction message is used for the measurement data for indicating the up channel that base station obtains UE.Base station, which is received, starts the measurement to UE up channel after the instruction message.

Base station can be by private message interface RNC instruction message and to RNC reporting measurement data.

Wherein, the measurement data of the up channel for the UE that base station is reported can include the SIR of UE active set and the up channel of each cell of monitoring concentration.Base station can also obtain the signal-to-noise ratio deviation S IRerr of UE active set and the up channel of each cell of monitoring concentration using existing up special measurement, S IRerr are reported into RNC as measurement data, is calculated by RNC according to the SIRerr and obtains SIR.

302nd, the measurement data of UE up channel is reported to radio network controller (RNC) by base station, so that RNC performs switch decision according to measurement data.

Wherein, the measurement data of above-mentioned UE up channel is except the activity including UE The SIR or SIRerr of the up channel of each cell are concentrated in collection and monitoring, can also include the information such as associated pilot energy.

303rd, base station receives the switching command that RNC is sent after judging that UE needs to switch.Wherein, the switching command that base station is received is related to cell switching event.For example, when cell switching event is 1 A events, the instruction that base station is received is the instruction of increase Radio Link.When cell switching event is 1 B events, the instruction that base station is received is the instruction of deleting radio link.When cell switching event is 1 C events, the instruction that base station is received is the instruction for replacing Radio Link

304th, base station completes the handover operation of link layer according to switching command.

Wherein, the handover operation of link layer includes increase, deletes or replaces Radio Link.For example, RNC issues the instruction that switching command is deleting radio link to base station, then the Radio Link between UE and former cell is deleted in base station after the switching command is received according to the switching command.

Step 304 can be realized according to prior art, be repeated no more here.

The cell switching method that embodiments of the invention are provided, base station is measured to UE up channel, obtain the measurement data of the up channel of the UE, and the measurement data is reported into RNC, so that the synthetic determination of the measurement data of the up channel for the UE that RNC is reported by the measurement report and base station of the UE reported to UE down channel, so as to know whether the operation for needing to carry out former cell deleting radio link, the measurement for the downlink channel signals for passing through UE compared to prior art is come the judgement to current area, the present invention can be when the unbalanced scene of up-downgoing declines low switching cutting off rate, improve Consumer's Experience simultaneously.Fig. 4 provides a kind of cell switching method for embodiments of the invention, can apply in network system as shown in Figure 1.In the present embodiment, 4 Jia set the active set cell of cell 1 and cell 2 as UE, during UE moves away from cell 1 and close cell 2, the B events of relative threshold deletion event 1 are triggered, wherein 1 B events belong to deletion link event.The cell switching method specifically includes following steps：

401st, radio network controller (RNC) receives the measurement report of reported by user equipment UE.After UE enters CELL DCH connection modes, RNC can be to UE sending measurings Control signaling, order UE is measured to cell quality and is carried out cell switching event report.Wherein, the triggering thresholding of cell switching event is included in measurement control signaling.UE starts to concentrate the Ec/NO or RSCP of the down channel of each cell to measure UE active sets and monitoring after the measurement control signaling is received.Above-mentioned downlink channel signals quality includes but is not limited to：Ec/NO or RSCP, and Ec/NO or RSCP here is a kind of possible example.

By taking Ec/NO as an example, when more poor more than the down channel quality of current best cell 2 of the down channel quality of the cell 1 in UE active set, UE reports 1 B event measurement reports to RNC.Specifically, the trigger condition of 1 B events can be as follows：The down-bound pilot frequency signal intensity Ec/Io of cell 1 is weak to being equal to or less than（Best pilot tone Ec/Io-(report threshold+deletion hysteresis threshold））, and maintain the Δ Τ times.Wherein, best pilot tone refers to the most strong pilot tone of signal in active set, and the pilot tone using cell 2 is illustrated as strongest pilot here.

RNC is after the measurement report that UE is reported is received, and it is 1 B event measurement reports to identify the measurement report, then performs step 402.

402-403, acquisition base station measure rear resulting measurement data to UE up channel.

RNC is after the measurement report that UE is reported is received, and it is 1 B event measurement reports to identify the measurement report, then performs step 402.If the cell switching event of the quality no requirement (NR) to up channel, then can not perform step 402, and handled by prior art.

Wherein it is possible to be active reporting measurement data or passive reporting measurement data according to base station, base station is reported into RNC by the measurement data of UE up channel is divided to for two kinds of implementations.

Specifically, the first implementation：Base station passively reports the measurement data of UE up channel according to RNC instruction.The process includes：

402al, RNC send to base station and indicate message.

Wherein, above-mentioned instruction message is used for the measurement data for indicating the up channel that base station obtains UE.

Optionally, when above-mentioned RNC is to base station transmission instruction message, it can be transmitted by the private message interface between RNC and base station. 402a2, base station are measured according to the configured information to UE up channel, obtain the measurement data of UE up channel.

Wherein, the measurement data of above-mentioned UE up channel includes but is not limited to：The uplink channel signals quality of each cell, and associated pilot energy are concentrated in active set and monitoring；And above-mentioned uplink channel signals quality is generally represented by SIR.

The measurement data of UE up channel is reported to RNC by 403 a, base station.

Optionally, base station can be reported when the UE measurement data of up channel is reported to RNC by the private message interface between RNC and base station.

Second of implementation：The measurement data of base station active reporting UE up channel.The process is specifically included：

402b, base station is measured to UE up channel, obtains the measurement data of UE up channel.

403b, the measurement data of base station active reporting UE up channel.

Specifically, base station can report the measurement data of UE up channel in special time threshold value or Ct value to RNC.

404th, RNC is based on UE>Measurement 4 it is blunt announcement and UE upper lower channel measurement data perform switch decision.

Because the execution condition for deleting link event is that number of cells in UE active set is more than 1.And in the present embodiment, UE activity is concentrated with cell 1 and cell 2, therefore, RNC is received after 1 B events, is judged that the number of cells in UE active set is more than 1, is met the execution condition of 1 B events.

RNC also obtains the signal-to-noise ratio SIR of the up channel of cell 1 and cell 2 from measurement data, judge whether SIRs and UE of the UE in the up channel of cell 2 reach pre-determined threshold in the SIR of the up channel of cell 1 ratio, if reaching the pre-determined threshold, then it is assumed that UE is in credible scope in the up channel of 2 cells.It should be noted that pre-determined threshold be as the cell-level parameter of customization for the network optimization when use, specifically can root Configured according to network environment.

In addition, in RNC according to the measurement data of UE up channel come before performing switch decision, if what is included in the measurement data of UE up channel is the SIRERR values of the uplink channel signals of cell, then need RNC that above-mentioned SIRERR values first are converted into sir value, switch decision is performed further according to the SIR values after conversion.Wherein, SIRERR values are converted to sir value and specifically included by above-mentioned RNC：The SIRERR values of the uplink channel signals of RNC reports above-mentioned base station some or whole cell are substituted into SIRERR and SIR conversion formula respectively, so as to obtain the sir value of the uplink channel signals of each cell.Specifically, the conversion formula between above-mentioned SIRERR and SIR is： SIR=SIRTARGET-SIRERR.

It is determined that the number of cells that current active is concentrated is more than 1, and cell 2 up channel also in a credible scope after, RNC thinks to need switching, i.e. RNC thinks that the Radio Link of cell 1 can be deleted.And if the number of cells that current active is concentrated is not more than 1, or cell 2 uplink channel signals quality also in an insincere scope, then judge to switch without cell, i.e., do not delete the Radio Link of cell 1.

405th, when court verdict is that UE needs switching, RNC issues switching command to base station and UE and indicates that the link of former cell is deleted in base station, and indicates that UE updates active set, to complete switching.

Specifically, when RNC judges to need to switch over, switching command is issued respectively to base station and UE, so that base station after the switching command is received, Radio Link between UE and cell 1 is deleted according to the switching command, and UE is updated active set according to the switching command.

406th, UE is deleted in the link of former cell in base station according to switching command, and UE is switched into purpose cell.

Specifically, base station is after the switching command is received, the Radio Link between UE and cell 1 is deleted according to the switching command.

407th, UE updates active set according to switching command.

UE deletes cell 1 after the switching command of RNC transmissions is received from active set. The cell switching method that embodiments of the invention are provided, the synthetic determination of the measurement report of the up channel for the UE that RNC is reported by the measurement report and base station of the UE reported to UE down channel, so as to know whether the operation for needing to carry out former cell deleting radio link, the measurement for the downlink channel signals for passing through UE compared to prior art is come the judgement to former cell, the present invention can be when the unbalanced scene of up-downgoing declines low switching cutting off rate, while improving Consumer's Experience.Embodiments of the invention provide a kind of cell switching method, it can apply to network system as shown in Figure 1, in the present embodiment, UE passes through the measurement result of the down channel to UE and the synthetic determination of UE uplink power control word, carry out reporting measurement reports, so that the switching of cell is realized, wherein, as shown in figure 5, the cell switching method specifically includes following steps：

501st, user equipment (UE) is measured to the signal quality of down channel.

Wherein, UE can start measurement after the measurement control signaling that RNC is issued is received.Under normal circumstances, measurement here is that UE down channel is measured, including the active set to UE and monitoring concentrate the signal quality of the down channel of each cell to measure.Specifically, can be to received signal code power（Received Signal Code Power, RSCP) or pilot frequency intensity Ec/Io measurement.It should be noted that RSCP or Ec/Io here is a kind of possible example.

In the present embodiment, step 501 can be realized using prior art, be repeated no more here.

502nd, when the result of measurement meets the trigger condition of cell switching event, UE obtains the uplink power control word of former cell and purpose cell.

Wherein, the trigger condition of cell switching event can be the event triggering thresholding specified in the measurement control signaling that RNC is issued.It can determine whether to meet the trigger condition of cell switching event according to prior art.

In the embodiment of the present invention, UE is being measured after cell signal quality meets the trigger condition of cell switching event, also further the uplink power control word of former cell and purpose cell is judged, so that it is determined that whether the up quality of purpose cell is credible.

Wherein, above-mentioned uplink power control is used for the transmit power for controlling UE, and above-mentioned uplink power control word is used to show uplink power control, and uplink channel signals are can be determined that from uplink power control word The quality of quality.During uplink power control word in the embodiment of the present invention can be up channel

TPC fields.Specifically, the span of uplink power control word typically exists：0 to 30, when the uplink power control near 0 to 15 is in the range of this, illustrate that the signal quality that the up channel is received is good, and when the uplink power control word rises to 15 to 30 in the range of this, illustrate the poor signal quality that the up channel is received.That is, the value of uplink power control word is smaller, the signal quality of channel is better.Therefore, based on above-mentioned concept, UE can judge the uplink channel signals quality of former cell and purpose cell by uplink power control word, and then judge whether UE is in credible scope in the up channel of purpose cell.

503rd, it is compared by the uplink power control word to former cell and purpose cell and judges whether UE is in believable scope in the up channel of purpose cell.

Specifically, if the uplink power control word of former cell is more than the uplink power control word of purpose cell, UE judges that UE is in believable scope in the up channel of purpose cell.

If the 504, UE is in believable scope in the up channel of purpose cell, UE reports the measurement report comprising cell switching event to radio network controller (RNC).

Specifically, RNC is after the measurement report that UE is reported is received, then judgement can be switched over according to the blunt announcement of measurement.In the present embodiment, RNC is switched over the execution of the switching after the process and switch decision of judgement and can realized using prior art.When performing switching, RNC can send switching command to base station and UE, and base station indicates to increase Radio Link, deleted or replacement operation after the switching command of RNC transmissions is received according to the switching.And UE can update existing active set after the switching command of RNC transmissions is received according to the switching command.

The cell switching method that embodiments of the invention are provided, the uplink power control word of the former cell got and purpose cell and the downlink channel signals quality of former cell and purpose cell are compared UE, and judge whether UE is in believable scope in the up channel of purpose cell according to the comparison result, if UE is in believable scope in the up channel of purpose cell, UE reports the measurement report of bag cell switching event to radio network controller (RNC).Compared to prior art, ability reporting measurement reports only in the case of the up channel of purpose cell is believable of the embodiment of the present invention, therefore, even if RNC 11 does not consider the quality of up channel when performing switch decision, the problem of will not also causing call drop after switching.The present invention can be in up-downgoing Unbalanced scene declines cutting off rate during low switching, while improving Consumer's Experience.The embodiment of the present invention also provides corresponding equipment to realize cell switching method provided in an embodiment of the present invention.

Embodiments of the invention provide a kind of radio network controller (RNC), the RNC is used to realizing cell switching method shown in above-mentioned Fig. 2 and Fig. 4 embodiment, and the content such as its working mechanism, the interaction to other network elements, related technical term, concept may be referred to the embodiment shown in Fig. 2 and Fig. 4.Specifically, as shown in fig. 6, the RNC6 includes：Receiving unit 61, acquiring unit 62, decision unit 63 and switch unit 64, wherein：

Receiving unit 61, the measurement report for receiving reported by user equipment UE.

Acquiring unit 62, is used for, and obtains base station and measures obtained measurement data to UE up channel.

Decision unit 63, the measurement data that measurement report and acquiring unit 62 for being received based on receiving unit 61 are obtained performs switch decision.

Switch unit 64, when needing switching for the court verdict in decision unit 63 for UE, cell switching is completed by being interacted with the base station and the UE.

The RNC that embodiments of the invention are provided, the synthetic determination of the measurement report of the U E reported by the measurement report and base station of the UE reported to UE down channel up channel, so as to know whether to carry out cell switching, the measurement for the downlink channel signals for passing through UE compared to prior art is come the judgement to former cell, the present invention can be when the unbalanced scene of up-downgoing declines low switching cutting off rate, while improving Consumer's Experience.

Optionally, as shown in fig. 7, decision unit 63 includes：First judge module 63 1, the second judge module 632 and determination module 633;Measurement report includes cell switching event its towel：

First judge module 63 1, for judging whether the execution condition of cell switching event is satisfied.

If cell switching event is deletes link event, the execution condition of the cell switching event is more than 1 for the number of cells in the active set of the UE.

Second judge module 632, for judging UE in purpose cell according to measurement data Whether up channel is in credible scope.

Determination module 633, for determining that the execution condition of the cell switching event is satisfied in first judge module, and the second judge module 632 determines UE when the up channel of purpose cell is in credible scope, and judgement needs switching.

It is further alternative, the second judge module 632 specifically for：The UE is obtained in purpose cell and the signal-to-noise ratio SIR of the up channel of former cell according to the measurement data, judge whether SIRs and the UE of the UE in the up channel of purpose cell reach pre-determined threshold in the SIR of the up channel of former cell ratio, if reaching the pre-determined threshold, the UE is in credible scope in the up channel of the purpose cell.

Specifically, the measurement data of UE up channel may include that the signal-to-noise ratio SIR or signal-to-noise ratio deviation SIRerr of the up channel of each cell are concentrated in the active set of the UE and monitoring.Second judge module 632 can directly obtain the SIR of former cell and purpose cell from measurement data.Or, the second judge module 632 can also obtain the SIRerr of former cell and purpose cell from measurement data, then obtain SIR by calculating, specific calculating process refers to method part, repeated no more here.

Optionally, as shown in Fig. 7, acquiring unit 62 includes：Sending module 621 and data reception module 622 are indicated, wherein：

Indicating module 621, message is indicated for being sent to base station.

Data reception module 622, for receiving the measurement data reported after base station is measured according to the instruction message to UE up channel.

The RNC that embodiments of the invention are provided, the synthetic determination of the measurement report of the U E reported by the measurement report and base station of the UE reported to UE down channel up channel, so as to know whether to need to carry out cell switching, the measurement for the downlink channel signals for passing through UE compared to prior art is come the judgement to former cell, the present invention can be when the unbalanced scene of up-downgoing declines low switching cutting off rate, while improving Consumer's Experience.

It should be noted that the implementation and interaction of each unit in the RNC more than present invention in each embodiment may be referred to the associated description in correlation method embodiment. Embodiments of the invention provide a kind of base station, the RNC is used to realize above-mentioned Fig. 3 to the cell switching method shown in Fig. 4 embodiment, and the content such as its working mechanism, the interaction to other network elements, related technical term, concept may be referred to the embodiment shown in Fig. 3 to Fig. 4.Specifically, as shown in figure 8, the base station 7 includes：Measuring unit 71, reporting unit 72, receiving unit 73 and switch unit 74, wherein：

Measuring unit 71, measures for the up channel to user equipment (UE), obtains the measurement data of UE up channel.

Reporting unit 72, the measurement data for the up channel for the UE for measuring measuring unit 71 reports to radio network controller (RNC), so that RNC performs switch decision according to measurement data.

Receiving unit 73, for receiving the switching command that RNC is sent after judging that UE needs to switch.

Switch unit 74, the switching command for being received according to receiving unit 73 completes the handover operation of link layer.

Optionally, receiving unit 73, are additionally operable to receive the instruction message that RNC is sent.Wherein, above-mentioned instruction message is used for the measurement data for indicating the up channel that base station obtains UE.

Measuring unit 71, after the instruction message that receiving unit 73 is received is received, performs the operation that the above-mentioned up channel to the UE is measured.

Optionally, the measurement data of above-mentioned UE up channel includes the signal-to-noise ratio SIR or signal-to-noise ratio deviation SIRerr of UE active set and the up channel of each cell of monitoring concentration.

The base station that embodiments of the invention are provided, the base station is measured to UE up channel, obtain the measurement data of the up channel of the UE, and the measurement data is reported into RNC, so that the synthetic determination of the measurement data of the up channel for the UE that RNC is reported by the measurement report and base station of the UE reported to UE down channel, so as to know whether to need to carry out cell switching, the measurement for the downlink channel signals for passing through UE compared to prior art is come the judgement to current area, the present invention can be reduced under the unbalanced scene of up-downgoing Cutting off rate during switching, while improving Consumer's Experience.

It should be noted that the implementation and interaction of each unit in the base station more than present invention in each embodiment may be referred to the associated description in correlation method embodiment.Embodiments of the invention provide a kind of user equipment (UE), the UE is used to realizing cell switching method shown in above-mentioned Fig. 5 embodiment, and the content such as its working mechanism, the interaction to other network elements, related technical term, concept may be referred to the embodiment shown in Fig. 5.Specifically, as shown in Fig. 9, the UE8 includes：Measuring unit 81, acquiring unit 82, judging unit 83 and reporting unit 84, wherein：

Measuring unit 81, is measured for the signal quality to down channel.

When acquiring unit 82, trigger condition for meeting cell switching event when the result that measuring unit 81 is measured, the uplink power control word of former cell and purpose cell is obtained.

Judging unit 83, judges whether UE is in believable scope in the up channel of purpose cell for being compared by the uplink power control word to former cell and purpose cell.

Reporting unit 84, for determining that after the up channel of purpose cell is in believable scope, the measurement report comprising cell switching event is reported to radio network controller (RNC) by UE in judging unit 83.

Optionally, judging unit 83 specifically for：Compare the size of the uplink power control word of the former cell and the purpose cell, if the uplink power control word of former cell is more than the uplink power control word of purpose cell, judge that UE is in believable scope in the up channel of purpose cell.

The UE that embodiments of the invention are provided, the uplink power control word of the former cell got and purpose cell and the downlink channel signals quality of former cell and purpose cell are compared the UE, and judge whether UE is in believable scope in the up channel of purpose cell according to the comparison result, if UE is in believable scope in the up channel of purpose cell, UE reports the measurement report comprising cell switching event to radio network controller (RNC).Compared to prior art, ability reporting measurement reports only in the case of the up channel of purpose cell is believable of the embodiment of the present invention, therefore, even if RNC 11 does not consider the quality of up channel when performing switch decision, the problem of will not also causing call drop after switching.The present invention can be when the unbalanced scene of up-downgoing declines low switching cutting off rate, while improving Consumer's Experience. It should be noted that the implementation and interaction of each unit in the UE more than present invention in each embodiment may be referred to the associated description in correlation method embodiment.Radio network controller (RNC) provided in an embodiment of the present invention, the content such as its specific operation principle and the interaction of other network elements, related technical term, concept may be referred to the embodiment shown in Fig. 2 and Fig. 4, not repeat herein.

Specifically, as shown in Figure 10, the RNC includes：Communication interface 91 and processor 92, wherein：

Communication interface 91, for being communicated with ext nal network element.

Processor 92, is used for：

The measurement report of reported by user equipment UE is received by communication interface 91

Base station is obtained by the communication interface 91 obtained measurement data is measured to the up channel of the UE.

The measurement data of up channel based on the shown UE measurement reports reported and UE performs switch decision.

In court verdict to need during switching, completion cell is interacted by communication interface 91 and the base station and the UE and switched.

Wherein, measurement report includes cell switching event, and the measurement data of up channel of the processor 92 based on the shown UE measurement reports reported and UE performs switch decision and specifically included：Processor 92 is used for, and judges whether the execution condition of cell switching event is satisfied and judges whether UE is in credible scope in the up channel of purpose cell according to measurement data；It is determined that the execution condition of the cell switching event be satisfied and UE purpose cell up channel be in credible scope when, then judge need switching.

Wherein, if cell switching event is deletes link event, the execution condition of the cell switching event is more than 1 for the number of cells in the active set of the UE.

Further alternative, processor 92 judges whether UE specifically includes in the up channel of purpose cell in credible scope according to measurement data：Processor 92 is used for, and obtains UE in purpose cell and the signal-to-noise ratio SIR of the up channel of former cell according to measurement data, judges that SIRs and the UE of the UE in the up channel of the purpose cell are small in the original Whether the SIR of the up channel in area ratio reaches pre-determined threshold, if reaching the pre-determined threshold, and the UE is in credible scope in the up channel of the purpose cell.

Optionally, processor 92 measures obtained measurement data to UE up channel by the acquisition of communication interface 91 base station and specifically included：Processor 92 is used for, and is sent by communication interface 91 to base station and indicates message；Wherein, above-mentioned instruction message is used for the measurement data for indicating the up channel that base station obtains UE；The measurement data reported after the base station is measured according to the instruction message to the up channel of the UE is received by communication interface 91.

Specifically, the measurement data of UE up channel may include that the signal-to-noise ratio SIR or signal-to-noise ratio deviation SIRerr of the up channel of each cell are concentrated in the active set of the UE and monitoring.Processor 92 can directly obtain the SIR of former cell and purpose cell from measurement data.Or, processor 92 can also obtain the SIRerr of former cell and purpose cell from measurement data, then obtain SIR by calculating, specific calculating process refers to method part, repeated no more here.

It should be noted that the implementation and interaction of each unit in the RNC more than present invention in each embodiment may be referred to the associated description in correlation method embodiment.Base station provided in an embodiment of the present invention, the content such as its specific operation principle and the interaction of other network elements, related technical term, concept may be referred to the embodiment shown in Fig. 3 to Fig. 4, not repeat herein.

Specifically, as shown in Fig. 11, base station S 10 includes：Communication interface S 101 and processor S 102, wherein：

Communication interface S 101, for being communicated with ext nal network element.

Processor S 102, is used for： The up channel of user equipment (UE) is measured, the measurement data of the up channel of the UE is obtained.

The measurement data of the up channel of the UE is reported to by radio network controller (RNC) by communication interface S 101, so that the RNC performs switch decision according to measurement data.

The switching command that the RNC is sent after judging that UE needs to switch is received by communication interface S 101.

The handover operation of link layer is completed according to switching command.

Optionally, processor S 102, is additionally operable to：The instruction message that RNC is sent is received by communication interface S 101.

The base station that embodiments of the invention are provided, the base station is measured to UE up channel, obtain the measurement data of the up channel of the UE, and the measurement data is reported into RNC, so that the synthetic determination of the measurement data of the up channel for the UE that RNC is reported by the measurement report and base station of the UE reported to UE down channel, so as to know whether to need to carry out cell switching, the measurement for the downlink channel signals for passing through UE compared to prior art is come the judgement to current area, the present invention can be when the unbalanced scene of up-downgoing declines low switching cutting off rate, improve Consumer's Experience simultaneously.

It should be noted that the implementation and interaction of each unit in the base station more than present invention in each embodiment may be referred to the associated description in correlation method embodiment.User equipment (UE) provided in an embodiment of the present invention, the content such as its specific operation principle and the interaction of other network elements, related technical term, concept may be referred to the embodiment shown in Fig. 5, not repeat herein.

Specifically, as shown in Figure 12, the UE includes：Communication interface 111 and processor 1 12, wherein： Communication interface 111, for being communicated with ext nal network element.

Processor 1 12, is used for：

The signal quality of down channel is measured.

When measurement result meets the trigger condition of cell switching event, the uplink power control word of former cell and purpose cell is obtained.

It is compared by the uplink power control word to former cell and purpose cell and judges whether UE is in believable scope in the up channel of the purpose cell.

If UE is in believable scope in the up channel of the purpose cell, the measurement report comprising cell switching event is reported to radio network controller (RNC) by communication interface 111.

Optionally, the uplink power control word of former cell and purpose cell, which is compared, excessively for processor 1 12 judges whether UE specifically includes in the up channel of purpose cell in believable scope：Processor 1 12 is used for, compare the size of the uplink power control word of the former cell and the purpose cell, if the uplink power control word of former cell is more than the uplink power control word of the purpose cell, judge that UE is in believable scope in the up channel of purpose cell.

The UE that embodiments of the invention are provided, the uplink power control word of the former cell got and purpose cell and the downlink channel signals quality of former cell and purpose cell are compared the UE, and judge whether UE is in believable scope in the up channel of purpose cell according to the comparison result, if UE is in believable scope in the up channel of purpose cell, UE reports the measurement report comprising cell switching event to radio network controller (RNC).Compared to prior art, ability reporting measurement reports only in the case of the up channel of purpose cell is believable of the embodiment of the present invention, therefore, even if RNC 11 does not consider the quality of up channel when performing switch decision, the problem of will not also causing call drop after switching.The present invention can be when the unbalanced scene of up-downgoing declines low switching cutting off rate, while improving Consumer's Experience.

It should be noted that the implementation and interaction of each unit in the UE more than present invention in each embodiment may be referred to the associated description in correlation method embodiment.

It is apparent to those skilled in the art that, for convenience and simplicity of description, only with the division progress of above-mentioned each functional module for example, in practical application, it can as needed and by above-mentioned functions distribute and be completed by different functional modules, i.e., by device Portion's structure is divided into different functional modules, to complete all or part of function described above.The specific work process of the system, apparatus, and unit of foregoing description, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be realized by another way.For example, device embodiment described above is only schematical, for example, the division of the module or unit, it is only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can combine or be desirably integrated into another system, or some features can be ignored, or do not perform.Another, it, by some interfaces, the INDIRECT COUPLING or communication connection of device or unit, can be electrical, machinery or other forms that shown or discussed coupling or direct-coupling or communication connection each other, which can be,.

The unit illustrated as separating component can be or may not be physically separate, the part shown as unit can be or may not be physical location, a place can be located at, or can also be distributed on multiple NEs.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.

In addition, each functional unit in the application each embodiment can be integrated in a processing unit or unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.

If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or in use, can be stored in a computer read/write memory medium.Understood based on such, the part or all or part of the technical scheme that the technical scheme of the application substantially contributes to prior art in other words can be embodied in the form of software product, the computer software product is stored in a storage medium, including some instructions are to cause a computer equipment（Can be personal computer, server, or network equipment etc.）Or processor（Processor all or part of step of each embodiment methods described of the application) is performed.And foregoing storage medium includes：U disks, mobile hard disk, read-only storage（ROM, Read-Only Memory), random access memory（ RAM , Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.Described above, above example is only to the technical scheme for illustrating the application, rather than its limitations；Although the application is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the spirit and scope of each embodiment technical scheme of the application.

Claims

Claims

1st, a kind of radio network controller (RNC), it is characterised in that including：

Receiving unit, the measurement report for receiving reported by user equipment UE；

Acquiring unit, obtained measurement data is measured for obtaining base station to the up channel of the UE；

Decision unit, the measurement data obtained for the measurement report received based on the receiving unit and the acquiring unit performs switch decision；

Switch unit, for the court verdict in the decision unit to need during switching, cell switching is completed by being interacted with the base station and the UE.

2nd, RNC according to claim 1, it is characterised in that the measurement report includes cell switching event；

The decision unit includes：

First judge module, for judging whether the execution condition of the cell switching event is satisfied；

Second judge module, for judging whether the UE is in credible scope in the up channel of purpose cell according to the measurement data；

Determination module, for determining that the execution condition of the cell switching event is satisfied in first judge module, and second judge module determines the UE when the up channel of the purpose cell is in credible scope, and judgement needs switching.

3rd, RNC according to claim 2, it is characterised in that second judge module specifically for：The UE is obtained in purpose cell and the signal-to-noise ratio SIR of the up channel of former cell according to the measurement data, judge whether SIRs and the UE of the UE in the up channel of the purpose cell reach pre-determined threshold in the SIR of the up channel of former cell ratio, if reaching the pre-determined threshold, the UE is in credible scope in the up channel of the purpose cell.

4th, the RNC according to any one of claim 2 to 3, it is characterised in that the cell switching event is deletion link event；

The execution condition of the cell switching event is more than 1 for the number of cells in the active set of the UE. 5th, the RNC according to any one of Claims 1-4, characterized in that, the measurement data of the up channel of the UE includes the signal-to-noise ratio SIR or signal-to-noise ratio deviation SIRerr of the active set of the UE and the up channel of each cell of monitoring concentration.

6th, the RNC according to any one of claim 1 to 5, it is characterised in that the acquiring unit includes：

Indicating module, message is indicated for being sent to the base station；It is wherein described to indicate that message is used for the measurement data for indicating the up channel that the base station obtains the UE；

Data reception module, for receiving the measurement data reported after the base station is measured according to the instruction message to the up channel of the UE.

7th, the RNC according to any one of claim 1 to 6, reported characterized in that, the measurement report that the UE is reported is the UE after the received signal code power RSCP or pilot frequency intensity Ec/Io of the down channel for the cell that the active set and monitoring measured is concentrated meet the trigger condition of cell switching event.

8th, a kind of base station, it is characterised in that including：

Measuring unit, measures for the up channel to user equipment (UE), obtains the measurement data of the up channel of the UE；

Reporting unit, the measurement data for the up channel for the UE for measuring the measuring unit reports to radio network controller (RNC), so that the RNC performs switch decision according to the measurement data；

Receiving unit, for receiving the switching command that the RNC is sent after judging that the UE needs to switch；

Switch unit, the switching command for being received according to the receiving unit completes the handover operation of link layer.

9th, base station according to claim 8, it is characterised in that；

The receiving unit, is additionally operable to receive the instruction message that the RNC is sent；It is wherein described to indicate that message is used for the measurement data for indicating the up channel that the base station obtains the UE；The measuring unit performs the operation that the up channel to the UE is measured after the instruction message that the receiving unit is received.

10th, the base station according to claim 8 or 9, it is characterised in that the UE Up channel measurement data including the UE active set and monitoring concentrate each cell up channel signal-to-noise ratio SIR or signal-to-noise ratio deviation SIRerr.

11, a kind of user equipment (UE), it is characterised in that including：

Measuring unit, is measured for the signal quality to down channel；

When acquiring unit, trigger condition for meeting cell switching event when the result that the measuring unit is measured, the uplink power control word of former cell and purpose cell is obtained；

Judging unit, judges whether the UE is in believable scope in the up channel of the purpose cell for being compared by the uplink power control word to former cell and purpose cell；Reporting unit, for determining that after the up channel of the purpose cell is in believable scope, the measurement report for including the cell switching event is reported to radio network controller (RNC) by the UE in the judging unit.

12nd, the UE according to right wants 11, it is characterised in that the judging unit specifically for：Compare the size of the uplink power control word of the former cell and the purpose cell, if the uplink power control word of the former cell is more than the uplink power control word of the purpose cell, judge that the UE is in believable scope in the up channel of the purpose cell.

13rd, a kind of radio network controller (RNC), it is characterised in that including：

Communication interface, for being communicated with ext nal network element；

Processor, is used for：

The measurement report of reported by user equipment UE is received by the communication interface；Base station is obtained by the communication interface obtained measurement data is measured to the up channel of the UE；

The measurement data of up channel based on the shown U E measurement reports reported and the U E performs switch decision；

In court verdict to need during switching, completion cell is interacted with the base station and the UE by the communication interface and switched.

14th, RNC according to claim 13, it is characterised in that the measurement report includes cell switching event；

The measurement data of up channel of the processor based on the shown UE measurement reports reported and the UE performs switch decision and specifically included：The processor is used for, and judges the cell Whether the execution condition of handover event is satisfied；And according to judging the measurement data

Whether UE is in credible scope in the up channel of purpose cell；It is determined that the execution condition of the cell switching event be satisfied and the U E the purpose cell up channel be in credible scope when, then judge need switching.

15th, RNC according to claim 14, it is characterised in that

The processor judges whether the UE specifically includes in the up channel of purpose cell in credible scope according to the measurement data：The processor is used for, the UE is obtained in purpose cell and the signal-to-noise ratio SIR of the up channel of former cell according to the measurement data, judge whether SIRs and the UE of the UE in the up channel of the purpose cell reach pre-determined threshold in the S IR of the up channel of former cell ratio, if reaching the pre-determined threshold, the UE is in credible scope in the up channel of the purpose cell.

16th, the RNC according to any one of claim 13 to 15, characterized in that, the measurement data of the up channel of the UE includes the signal-to-noise ratio SIR or signal-to-noise ratio deviation SIRerr of the active set of the UE and the up channel of each cell of monitoring concentration.

17th, the RNC according to any one of claim 13 to 16, it is characterised in that the cell switching event is deletion link event；

The execution condition of the cell switching event is more than 1 for the number of cells in the active set of the UE.

18th, the RNC according to any one of claim 13 to 17, it is characterised in that the processor measures obtained measurement data to the up channel of the UE by communication interface acquisition base station and specifically included：The processor is used for, and is sent by the communication interface to the base station and indicates message；It is wherein described to indicate that message is used for the measurement data for indicating the up channel that the base station obtains the UE；And the measurement data reported after the base station is measured according to the instruction message to the up channel of the UE is received by the communication interface.

19th, the RNC according to any one of claim 13 to 18, reported characterized in that, the measurement report that the UE is reported is the UE after the received signal code power RSCP or pilot frequency intensity Ec/Io for measuring the down channel of cell of active set and monitoring concentration meet the trigger condition of cell switching event. 20th, a kind of base station, it is characterised in that including：

Communication interface, for being communicated with ext nal network element；

Processor, is used for：

The up channel of user equipment (UE) is measured, the measurement data of the up channel of the UE is obtained；

The measurement data of the up channel of the UE is reported to by radio network controller RN C by the communication interface, so that the RN C perform switch decision according to the measurement data；The switching command that the RNC is sent after judging that the UE needs to switch is received by the communication interface；

The handover operation of link layer is completed according to the switching command.

21st, base station according to claim 20, it is characterised in that the processor, is additionally operable to：The instruction message that the RNC is sent is received by the communication interface；It is wherein described to indicate that message is used for the measurement data for indicating the up channel that the base station obtains the UE.

22nd, the base station according to claim 20 or 21, characterized in that, the measurement data of the up channel of the UE includes the signal-to-noise ratio SIR or signal-to-noise ratio deviation SIRerr of the active set of the UE and the up channel of each cell of monitoring concentration.

23rd, a kind of user equipment (UE), it is characterised in that including：

Communication interface, for being communicated with ext nal network element；

Processor, is used for：

The signal quality of down channel is measured；

When the result of measurement meets the trigger condition of cell switching event, the uplink power control word of former cell and purpose cell is obtained；

It is compared by the uplink power control word to former cell and purpose cell and judges whether the UE is in believable scope in the up channel of the purpose cell；

If the UE is in believable scope in the up channel of the purpose cell, the measurement report comprising cell switching event is reported to radio network controller (RNC) by the communication interface.

24th, the UE according to right wants 23, it is characterised in that

The processor is compared by the uplink power control word to former cell and purpose cell to be sentenced Whether the UE that breaks specifically includes in the up channel of the purpose cell in believable scope：The processor is used for, compare the size of the uplink power control word of the former cell and the purpose cell, if the uplink power control word of the former cell is more than the uplink power control word of the purpose cell, judge that the UE is in believable scope in the up channel of the purpose cell.

25th, a kind of cell switching method, it is characterised in that including：

Radio network controller (RNC) receives the measurement report of reported by user equipment UE；Obtain base station and obtained measurement data is measured to the up channel of the UE；The measurement data of up channel based on the U E measurement reports reported and the U E performs switch decision；

In court verdict to need during switching, cell switching is completed by being interacted with the base station and the UE.

26th, method according to claim 25, it is characterised in that the measurement report includes cell switching event；

The measurement data of the up channel based on the shown U E measurement reports reported and the U E, which performs switch decision, to be included：

The RNC judges whether the execution condition of the cell switching event is satisfied, and judges whether the UE is in credible scope in the up channel of purpose cell according to the measurement data；

It is determined that the execution condition of the cell switching event be satisfied and the UE the purpose cell up channel be in credible scope when, judgement need switching.

27th, method according to claim 26, it is characterised in that described to judge whether the UE specifically includes in the up channel of the purpose cell in credible scope according to the measurement data：

The UE is obtained in purpose cell and the signal-to-noise ratio SIR of the up channel of former cell according to the measurement data, judge whether SIRs and the UE of the UE in the up channel of the purpose cell reach pre-determined threshold in the SIR of the up channel of former cell ratio, if reaching the pre-determined threshold, the UE is in credible scope in the up channel of the purpose cell.

28th, the method according to any one of claim 26 to 27, it is characterised in that The cell switching event is deletion link event；

The execution condition of the cell switching event is more than 1 for the number of cells in the active set of the UE.

29th, the method according to any one of claim 25 to 28, characterized in that, the measurement data of the up channel of the UE includes the SIR or signal-to-noise ratio deviation SIRerr of the active set of the UE and the up channel of each cell of monitoring concentration.

30th, the method according to any one of claim 25 to 29, it is characterised in that the RNC acquisitions base station measures obtained measurement data to the up channel of the UE and specifically included：

The RNC sends to the base station and indicates message；It is wherein described to indicate that message is used for the measurement data for indicating the up channel that the base station obtains the UE；

The RNC receives the measurement data reported after the base station is measured according to the instruction message to the up channel of the UE.

31, the method according to any one of claim 25 to 30, reported characterized in that, the measurement report that the UE is reported is the UE after the received signal code power RSCP for measuring the down channel of cell of active set and monitoring concentration meets the trigger condition of cell switching event.

32nd, a kind of cell switching method, it is characterised in that including：

Base station is measured to the up channel of user equipment (UE), obtains the measurement data of the up channel of the UE；

The measurement data of the up channel of the U E is reported into radio network controller R N C, so that the RNC performs switch decision according to the measurement data；

The base station receives the switching command that the RNC is sent after judging that the UE needs to switch；

The handover operation of link layer is completed according to the switching command.

33rd, method according to claim 32, it is characterised in that before the base station is measured to the up channel of user equipment (UE), methods described also includes：

The base station receives the instruction message that the RNC is sent；It is wherein described to indicate that message is used for the measurement data for indicating the up channel that the base station obtains the UE. 34th, the method according to claim 32 or 33, characterized in that, the measurement data of the up channel of the UE includes the signal-to-noise ratio SIR or signal-to-noise ratio deviation SIRerr of the active set of the UE and the up channel of each cell of monitoring concentration.

35th, a kind of cell switching method, it is characterised in that including：

User equipment (UE) is measured to the signal quality of down channel；

When the result of measurement meets the trigger condition of cell switching event, the UE obtains the uplink power control word of former cell and purpose cell；

It is compared by the uplink power control word to former cell and purpose cell and judges whether the UE is in believable scope in the up channel of the purpose cell；

If the UE is in believable scope in the up channel of the purpose cell, then the UE reports the measurement report for including the cell switching event to radio network controller (RNC), so that the RNC performs switch decision according to the cell switching event.

36th, method according to claim 35, it is characterised in that described be compared by the uplink power control word to former cell and purpose cell judges whether the UE specifically includes in the up channel of purpose cell in believable scope：

Compare the size of the uplink power control word of the former cell and the purpose cell, if the uplink power control word of the former cell is more than the uplink power control word of the purpose cell, the UE judges that the UE is in believable scope in the up channel of the purpose cell.