CN105578520A - Cell handover processing system, cell handover processing method and mobile terminal - Google Patents
Cell handover processing system, cell handover processing method and mobile terminal Download PDFInfo
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- CN105578520A CN105578520A CN201410525659.9A CN201410525659A CN105578520A CN 105578520 A CN105578520 A CN 105578520A CN 201410525659 A CN201410525659 A CN 201410525659A CN 105578520 A CN105578520 A CN 105578520A
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Abstract
The invention discloses a cell handover processing system, a cell handover processing method and a mobile terminal, and belongs to the technical field of cell handover. The system comprises a first evaluation unit, a second evaluation unit and a processing unit. The method comprises the following steps: the first evaluation unit evaluates TPC of a current service cell; if TPC1 is up, uplink actually-sent TPC3 is directly set to TPC1; and if TPC1 is down, TPC of a target cell is evaluated, and the uplink actually-sent TPC3 is directly set to TPC2. Different judgment processes are added to the evaluation process for different cell handover trigger conditions to make TPC evaluation more accurate. The technical scheme has the following beneficial effects: through transmission power control pre-evaluation on the current service cell and the target cell, the problem that initial evaluation of TPC is poor after handover to the target cell is improved, abnormal call drop or performance degradation over a period of time caused by cell handover are avoided, and the stability and quality of service of link handover are improved.
Description
Technical field
The present invention relates to cell merge technical field, particularly relate to a kind of cell merge treatment system and method and mobile terminal.
Background technology
In prior art, when triggering some condition, mobile terminal can switch the Target cell from current service cell to other, the cell switch process of Here it is mobile terminal.The condition of triggering mobile terminals cell switch process can comprise the quality of the uplink receiving level of network terminal monitoring mobile terminal, or the signal strength signal intensity etc. that mobile terminal self is monitored down-link performance and received from peripheral cell (in same Active Set).Accordingly, the cell merge of mobile terminal can divide into the switching based on power budget, the switching based on incoming level, the switching based on the quality of reception, the switching based on distance and the switching etc. based on telephone traffic.
Mobile terminal cell switch process in prior art, usually only transmitting power control (TransmissionPowerControl is carried out in current service cell, TPC), the TPC of assessment current service cell, and the corresponding TPC evaluation process for Target cell is not had when switching to Target cell, therefore cause the TPC initial assessment of Target cell poor, the problem such as call drop or circuit may be caused not smooth, affect the speech quality of mobile terminal.
Summary of the invention
According to problems of the prior art, the technical scheme of a kind of cell merge treatment system and method and mobile terminal is now provided, is intended to solve the abnormal call drop or synchronous not smooth problem that cause because the assessment of initial transmitting power control is poor after being switched to Target cell in prior art;
Technique scheme specifically comprises:
A kind of cell merge treatment system, is applicable to mobile terminal; Wherein, comprising:
First assessment unit, for needing the transmission power control command of up transmission according to the transmitting power control quality of current service cell and transmitting power control error rate assessment accordingly, and exports corresponding first assessment result;
Second assessment unit, connect described first assessment unit, for according to described first assessment unit, the transmitting power control quality evaluation of the Target cell that will be switched to according to current described transmitting power control error rate and described mobile terminal when needing the described transmission power control command of up transmission to be assessed as decline needs the described transmission power control command of up transmission, and exports corresponding second assessment result;
Processing unit, connect described first assessment unit and described second assessment unit respectively, when needing the described transmission power control command of up transmission to be assessed as decline, described processing unit arranges the described transmission power control command needing up transmission according to described first assessment result, or
Described processing unit arranges the described transmission power control command needing up transmission according to described second assessment result.
Preferably, this cell merge treatment system, wherein, also comprises:
First judging unit, be connected between described first assessment unit and described second assessment unit, and connect described processing unit, described first judging unit is used for according to described first assessment result, judge that described mobile terminal is current when needing the described transmission power control command of up transmission to be assessed as decline whether to be in the process being about to carry out cell merge, and export corresponding first judged result;
Second judging unit, be connected between described first assessment unit and described second assessment unit, and connect described processing unit, described second judging unit is used for according to described first assessment result, judge the threshold value whether current channel quality is preset lower than when needing the described transmission power control command of up transmission to be assessed as decline, and export corresponding second judged result;
Described second assessment unit according to described first judged result, described mobile terminal is current be in the process being about to carry out cell merge time to needing the described transmission power control command of up transmission to assess, or
Described second assessment unit, according to described second judged result, is assessed the described transmission power control command of the up transmission of needs lower than during described threshold value at current described channel quality.
Preferably, this cell merge treatment system, wherein, also comprises:
Trigger element, connects described first judging unit and described second judging unit respectively;
Described trigger element is used for starting described first judging unit after described mobile terminal receives corresponding cell re-configuration message, or
Described trigger element starts described second judging unit for detecting at described mobile terminal after 1D event occurs in non-described current service cell in Active Set.
Preferably, this cell merge treatment system, wherein,
The moment that described mobile terminal receives corresponding cell re-configuration message was the first moment;
Described mobile terminal was the second moment according to the moment of described cell re-configuration message activation cell handover operations;
Whether by the current timing node of detection, whether described trigger element judges between described first moment and described second moment that described mobile terminal is current is in the process being about to carry out cell merge.
Preferably, this cell merge treatment system, wherein, is applicable to WCDMA communication system.
Preferably, this cell merge treatment system, wherein, is applicable to described mobile terminal and switches to HSPA connection mode and FDPCH connection mode.
A kind of cell merge processing method, is applicable to mobile terminal; Wherein, specifically comprise:
Step S1, detects and is about to carry out cell merge;
Step S2, according to the transmitting power control quality of the corresponding current service cell received and the transmission power control command of the up transmission of corresponding transmitting power control error rate assessment needs, and exports corresponding first assessment result:
If described first assessment result represents that the described transmission power control command of the up transmission of needs is assessed as rising, then the described transmission power control command needing up transmission is set according to described first assessment result, goes to step S5 subsequently;
If described first assessment result represents that the described transmission power control command of the up transmission of needs is assessed as decline, then go to step S3;
Step S3, according to current transmitting power control error rate and the described transmission power control command transmitting power control quality evaluation in requisition for the Target cell switched to being needed to up transmission, and exports corresponding second assessment result;
Step S4, arranges the described transmission power control command needing up transmission according to described second assessment result;
Step S5, sends the described transmission power control command be provided with, with backed off after random.
Preferably, this cell merge processing method, wherein, in described step S1, described mobile terminal receives corresponding cell re-configuration message, then detect and be about to carry out cell merge; In described step S2, when assessment obtains needing the described transmission power control command of up transmission for declining, first perform following step:
Whether step S21a, judge that described mobile terminal is current and be in the process being about to carry out cell merge:
Be not in the process being about to carry out cell merge if described mobile terminal is current, then the described transmission power control command needing up transmission be set according to described first assessment result, go to step S5 subsequently;
Be in the process being about to carry out cell merge if described mobile terminal is current, then go to described step S3.
Preferably, this cell merge processing method, wherein,
Described mobile terminal is received the moment of described cell re-configuration message as the first moment;
Using described mobile terminal according to the moment of described cell re-configuration message activation cell handover operations as the second moment;
In described step S21a, if current timing node is between described first moment to described second moment, then judges that described mobile terminal is current and be in the process being about to carry out cell merge;
If current timing node was positioned at outside described first moment to described second moment, then judges that described mobile terminal is current and be not in the process being about to carry out cell merge.
Preferably, this cell merge processing method, wherein, in described step S1, described mobile terminal detects that in Active Set, 1D event occurs in non-described current service cell, then detect and be about to carry out cell merge;
In described step S2, when assessment obtains needing the described transmission power control command of up transmission for declining, first perform following step:
Step S21b, judges the threshold value whether current channel quality is preset lower than:
If described channel quality is not less than described threshold value, then the described transmission power control command needing up transmission is set according to described first assessment result, goes to step S5 subsequently;
If described channel quality is lower than described threshold value, then go to described step S3.
Preferably, this cell merge processing method, wherein, is applicable to WCDMA communication system.
Preferably, this cell merge processing method, wherein, before performing described step S1, first described mobile terminal switches to HSPA connection mode and FDPCH connection mode.
A kind of mobile terminal, wherein, comprises above-mentioned cell handover system.
A kind of mobile terminal, wherein, adopts above-mentioned cell switching method.
The beneficial effect of technique scheme is: by carrying out the Pre-Evaluation of transmitting power control to current service cell and the Target cell that is about to switch to, improve and be switched to the problem that the initial assessment of transmitting power control is poor behind Target cell, the abnormal call drop caused after avoiding carrying out cell merge or performance reduction in a period of time, improve stability and the service quality of link switching.
Accompanying drawing explanation
Fig. 1 is in preferred embodiment of the present invention, a kind of structural representation of cell merge treatment system;
Fig. 2-4 is in preferred embodiment of the present invention, a kind of schematic flow sheet of cell merge processing method.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
In prior art, when mobile terminal realizes cell merge according to some condition triggered (such as receive the cell re-configuration message that system sends, or in detection Active Set, 1D event etc. occurring in other communities), it can carry out cell merge.For current Serving cell, mobile terminal can carry out TPC assessment according to the communication conditions of network, and the corresponding assessment result of up transmission, the result that network is assessed according to TPC carries out power control, thus makes the speech quality of mobile terminal keep stable.
But, for the Target cell switched, in prior art, mobile terminal does not carry out TPC assessment according to this Target cell, thus the TPC causing Target cell initial assess may be poor, and then there is the situation of synchronous smooth (outofsync), the abnormal call drop of mobile terminal may be caused or in a period of time the problem such as hydraulic performance decline of mobile terminal (due to synchronous not smooth, require in existing protocol to close ascending power, thus may hydraulic performance decline be caused).
Based on above-mentioned problems of the prior art, as shown in Figure 1, a kind of cell merge treatment system is provided in preferred embodiment of the present invention, specifically comprises:
First assessment unit 1.In preferred embodiment of the present invention, first assessment unit 1 is for the transmitting power control quality (TPC quality) corresponding to the current service cell residing for mobile terminal and transmitting power control error rate (TPCtargeterrorrate, TPC error rate) the up transmission power control command (TPC_CMD) sent that needs is assessed, namely assess up needs and send the TPC_CMD rising (UP) or decline (DOWN).
In preferred embodiment of the present invention, the first assessment unit 1 exports corresponding first assessment result according to above-mentioned assessment.In preferred embodiment of the present invention, above-mentioned first assessment result is namely for representing that the current up needs of mobile terminal send the TPC_CMD of UP or DOWN to network.In preferred embodiment of the present invention, the first assessment result that the first assessment unit 1 exports through assessment is designated as TPC1.
In preferred embodiment of the present invention, the TPC that the first assessment unit 1 does is evaluated as the TPC assessment carried out current service cell.
In preferred embodiment of the present invention, also comprise in above-mentioned cell merge treatment system:
Second assessment unit 2, connects above-mentioned first assessment unit 1.In preferred embodiment of the present invention, the second assessment unit 2, according to above-mentioned first assessment result, carries out further evaluation.Particularly, in preferred embodiment of the present invention, second assessment unit 2 is according to above-mentioned first assessment result, when the current up needs of the first assessment result display are DOWN to the TPC_CMD that network sends, (when TPC1 is DOWN) carries out corresponding second assessment: according to the TPC error rate be currently received, and the TPC quality of the Target cell that will switch to, the current up TPC_CMD sent that needs is assessed.In preferred embodiment of the present invention, the second assessment unit 2 exports corresponding second assessment result according to assessment.Further, in preferred embodiment of the present invention, the second assessment result that the second assessment unit 2 exports through assessment is designated as TPC2.
In preferred embodiment of the present invention, the TPC that the first assessment unit 1 does is evaluated as the TPC assessment carried out the Target cell that will switch to.
In preferred embodiment of the present invention, the TPC error rate be currently received of above-mentioned second assessment unit 2 basis, can be the TPC error rate of the pre-configured corresponding Target cell completed of system, also can be the TPC error rate (when system does not have pre-configured) of corresponding current area.Therefore, in preferred embodiment of the present invention, what the second assessment unit 2 carried out assessment foundation is current TPC error rate.
In preferred embodiment of the present invention, also comprise in above-mentioned cell merge treatment system:
Processing unit 3, connects above-mentioned first assessment unit 1 and above-mentioned second assessment unit 2 respectively.In preferred embodiment of the present invention, the first assessment result that processing unit 3 exports according to above-mentioned first assessment unit 1, or according to the second assessment result that above-mentioned second assessment unit 2 exports, respective handling is carried out to the TPC_CMD (being hereinafter designated as TPC3) of current up transmission.Be specially:
In preferred embodiment of the present invention, when the TPC1 that the first assessment unit 1 represents the up transmission of current needs is UP, then current TPC3 is directly set as equaling TPC1 by processing unit 3, is set as UP by current TPC3, represents that the current up TPC_CMD sent to network is UP.
In preferred embodiment of the present invention, when the first assessment unit 1 represent the up transmission of current needs TPC1 be DOWN time, then trigger second assessment.The TPC_CMD of the second assessment unit 2 to the up transmission of current needs assesses, and exports corresponding TPC2.Then processing unit 3 is according to the second assessment result, is set as equaling TPC2 by the current up TPC3 sent to network, namely according to the current up TPC_CMD sent to network of the second assessment result setting.
In preferred embodiment of the present invention, also comprise in above-mentioned cell merge treatment system:
First judging unit 4, is connected between the first assessment unit 1 and the second assessment unit 2.In preferred embodiment of the present invention, the first judging unit 4 receives the first assessment result that above-mentioned first assessment unit 1 exports, and according to the first assessment result, carries out follow-up judgement when TPC1 is DOWN:
Judge that mobile terminal is current whether to be in the process being about to carry out cell merge, and export corresponding first judged result.
In preferred embodiment of the present invention, when mobile terminal carries out cell merge because of the cell re-configuration message that receives network and issue, moment mobile terminal being received cell re-configuration message is designated as the first moment t1, the moment starting to carry out cell merge that mobile terminal is determined according to cell re-configuration message is designated as the second moment t2, then current timing node t is between the first moment in moment to the second, during i.e. t1≤t≤t2, think and to be in the process being about to carry out cell merge at t mobile terminal.Therefore, whether the first judging unit 4, according to above-mentioned deterministic process, judges that mobile terminal is current and is in the process being about to carry out cell merge, and export corresponding first judged result.
In preferred embodiment of the present invention, second assessment unit 2 is according to above-mentioned first judged result, mobile terminal current be in be about to carry out in cell switch process time (t1≤t≤t2) carry out corresponding further evaluation, namely carry out the process assessing TPC2, and export corresponding second assessment result.
In preferred embodiment of the present invention, above-mentioned first judging unit 4 also connects above-mentioned processing unit 3.In preferred embodiment of the present invention, when to be that mobile terminal is current be not in the process being about to carry out cell merge the first judged result that the first judging unit 4 exports (t < t1 or t > t2), processing unit 3 is according to the first judged result, be set as equaling TPC1 by TPC3, the first assessment result namely exported according to the first current assessment unit 1 sets corresponding TPC3.
In preferred embodiment of the present invention, also comprise in above-mentioned cell merge treatment system:
Second judging unit 5, is connected between the first assessment unit 1 and the second assessment unit 2.In preferred embodiment of the present invention, when there is 1D event in the non-service cell that mobile terminal self detects in current Active Set, second judging unit 5 judges that whether current channel quality is lower than a threshold value, and exports corresponding second judged result.
In preferred embodiment of the present invention, the channel quality Q1 that the second judging unit 5 is first current according to current TPC Mass Calculation, and the threshold value Q0 that channel quality Q1 and presets is compared, export corresponding second judged result.
In preferred embodiment of the present invention, the current channel quality Q1 of mobile terminal can be calculated by modes such as measuring and calculating signal to noise ratios, in other words, channel quality Q1 described in technical scheme of the present invention can represent by various suitable mode, and threshold value Q0 can also represent by mode suitable accordingly.
In preferred embodiment of the present invention, arranging of above-mentioned threshold value Q0 needs to make Q0 be greater than mobile terminal and the step-out thresholding Q accessing community
out; In preferred embodiment of the present invention, in order to ensure better channel quality, above-mentioned threshold value Q0 can be set to be greater than mobile terminal and the synchronous thresholding Q accessing community further
in.
In preferred embodiment of the present invention, second assessment unit 2 is according to above-mentioned second judged result, corresponding second assessment is started when the channel quality Q1 < Q0 that mobile terminal is current, namely assessment needs the TPC_CMD of up transmission, and export corresponding second assessment result, namely export corresponding TPC2.
In preferred embodiment of the present invention, the second judging unit 5 also connects above-mentioned processing unit 3.In preferred embodiment of the present invention, when the second judged result that the second judging unit 5 exports represents current channel quality Q1 >=Q0, the TPC3 of up transmission is set as equaling TPC1 by processing unit 3.
In preferred embodiment of the present invention, also comprise in above-mentioned cell merge treatment system:
Trigger element 6, connects above-mentioned first judging unit 4 and the second judging unit 5 respectively.In preferred embodiment of the present invention, mobile terminal can:
1) according to the message initiated cell handover operations of cell re-configuration that current network issues, particularly, the cell re-configuration message issued comprises mobile terminal can in when which Target cell carrying out cell merge to, such as, mobile terminal can carry out cell merge to certain Target cell of non-present Serving cell in Active Set after 100 frames.
2) in the Active Set detected according to mobile terminal self there is 1D event and initiatively carry out cell merge in other certain communities of non-present Serving cell.So-called 1D event, in simple terms, refers to that the best community of current demand signal there occurs change, and in other words, current service cell has not been the best community of signal.Therefore, after there is 1D event in other communities of non-service cell in current Active Set, mobile terminal needs to be switched to the best community of current demand signal, namely can produce cell handover operations, and certain community occurred in the Active Set of 1D event is the Target cell needing to switch to.
So-called Active Set, refers to that network has distributed to the set of the community that can connect of mobile terminal, comprising current service cell.
Therefore, in preferred embodiment of the present invention, when mobile terminal receives the cell re-configuration message that network issues, trigger element 6 starts above-mentioned first judging unit 4, and namely whole processing procedure is performed by the first assessment unit 1, first judging unit 4, second assessment unit 2 and processing unit 3;
When mobile terminal self detects in current Active Set except after 1D event occurs in other communities of current service cell, trigger element 6 starts above-mentioned second judging unit 5, and namely whole processing procedure is performed by the first assessment unit 1, second judging unit 5, second assessment unit 2 and processing unit 3.
In sum, technical scheme of the present invention can comprise:
First determine to be about to carry out cell merge according to different triggerings, before carrying out cell merge, perform the processing procedure recorded in technical scheme of the present invention.Mobile terminal selects different processing procedures according to different trigger conditions:
1) mobile terminal receive the cell re-configuration message that issues and determine preset carry out cell merge sometime time, first mobile terminal needs the TPC_CMD of up transmission (namely exporting assessment result TPC1) according to TPC quality corresponding to current service cell and the assessment of TPC error rate before the switch, and judges whether that needing to carry out next step judges (the TPC error rate of above-mentioned corresponding current service cell can be obtained when receiving cell re-configuration message by mobile terminal) according to TPC1;
When TPC1 is UP, namely current need promote transmitting power time, do not need to carry out TPC assessment to Target cell again, and directly the TPC3 carrying out up transmission can be set as TPC1 (being namely set as UP); When TPC1 is DOWN, namely current need reduce transmitting power time, carry out next step judge:
First judging unit judges whether current mobile terminal is in (whether being t1≤t≤t2) in the process being about to carry out cell merge; Be about to if be in carry out in the process of cell merge, then performing further evaluation; Be about to if be not in the process of carrying out cell merge, then direct TPC3 be set as equaling TPC1;
The second follow-up assessment comprises: the TPC_CMD of up transmission (exporting assessment result TPC2) is wanted in the TPC quality corresponding according to the Target cell that will switch to and TPC error rate (informing when the system of being similarly issues cell re-configuration message) assessment, and is set as equaling TPC2 by TPC3.
Finally, the up TPC3 sent through final setting.
2) mobile terminal self detect other communities of non-present Serving cell in Active Set have there is 1D event time, start cell switch process, and first need the TPC_CMD of up transmission (namely exporting assessment result TPC1) according to TPC quality corresponding to current service cell and the assessment of TPC error rate before carrying out cell merge, and judge whether that needing to carry out next step judges according to TPC1;
Directly the TPC3 carrying out up transmission is set as TPC1 (being set as UP) when TPC1 is UP; When TPC1 is DOWN, carries out next step and judge:
First current according to the TPC Mass Calculation received channel quality Q1, and judge the threshold value Q0 whether Q1 presets lower than, if Q1 < is Q0, then perform further evaluation, if Q1 >=Q0, then direct being set as by TPC3 equals TPC1 (now TPC3 is set to DOWN);
The further evaluation performed comprises: (can be pre-configured and inform by system according to the TPC error rate be currently received, also can be TPC error rate corresponding to current service cell), and the TPC quality evaluation of Target cell that correspondence will switch to needs the TPC_CMD of up transmission (namely exporting assessment result TPC2), and the TPC3 that up reality sends is set as equaling TPC2.
Finally, the up TPC3 sent through final setting.
Therefore, goal of the invention of the present invention is, before carrying out cell merge, in advance the TPC_CMD word of current service cell and Target cell is assessed respectively, the TPC_CMD word that up reality sends is determined in conjunction with assessment result, can avoid in prior art because of only to current service cell carry out that TPC assessment causes be switched to Target cell after produce the poor problem such as make call drop serious of synchronous smooth and TPC initial assessment, thus promote the mobile terminal call quality of carrying out in cell switch process.
In preferred embodiment of the present invention, above-mentioned all processing procedures were all carried out before cell merge, namely carried out presynchronization to cell merge, namely got out the setting of the TPC_CMD word of corresponding TPC assessment and up transmission before cell merge.
In preferred embodiment of the present invention, above-mentioned cell merge treatment system is applicable in WCDMA communication system.
In preferred embodiment of the present invention, above-mentioned cell merge treatment system is applicable to mobile terminal and switches to HSPA (High-SpeedPacketAccess, high-speed packet accesses) connection mode and FDPCH (FractionalDedicatedPhysicalChannel, following special physical channel) connection mode.
In preferred embodiment of the present invention, as shown in Figure 2, based on above-mentioned cell merge treatment system, a kind of cell merge processing method is provided, specifically comprises:
Step S1, detects and is about to carry out cell merge;
Carry out cell merge under being given in two kinds of trigger conditions in technical scheme of the present invention, and describe in detail hereinafter.
In preferred embodiment of the present invention, before execution step S1, under first ensureing that mobile terminal has been in HSPA connection mode and FDPCH connection mode.
Step S2, according to the transmitting power control quality of the corresponding current service cell received and the transmission power control command of the up transmission of corresponding transmitting power control error rate assessment needs, and exports corresponding first assessment result:
If the first assessment result represents that the transmission power control command of the up transmission of needs is assessed as rising, then the transmission power control command needing up transmission is set according to the first assessment result, goes to step S5 subsequently;
If the first assessment result result represents that the transmission power control command of the up transmission of needs is assessed as decline, then go to step S3;
In preferred embodiment of the present invention, in above-mentioned steps S2, if when the first current assessment result represents the TPC_CMD (the assessment result TPC1 namely exported) of the up transmission of needs for UP, then without the need to carrying out further evaluation again, directly the TPC_CMD (i.e. TPC3) that up reality sends is set as equaling TPC1, and sends;
If when the first current assessment result represents that the TPC1 of the up transmission of needs is DOWN, then need to carry out further evaluation, namely to needing the Target cell switched to carry out TPC assessment.
Step S3, according to current transmitting power control error rate and the transmission power control command transmitting power control quality evaluation in requisition for the Target cell switched to being needed to up transmission, and exports corresponding second assessment result;
In preferred embodiment of the present invention, second assessment of follow-up execution is for the Target cell needing to switch to, namely according to the TPC quality evaluation TPC command (TPC_CMD) of current TPC error rate and corresponding Target cell, and corresponding TPC2 is exported.
Step S4, arranges the transmission power control command needing up transmission according to the second assessment result;
In preferred embodiment of the present invention, according to the second assessment result, the TPC3 that up reality sends can be set as equaling TPC2.
Step S5, sends the transmission power control command be provided with, with backed off after random.
In preferred embodiment of the present invention, as shown in Figure 3, when mobile terminal receives the cell re-configuration message that issues and carries out cell merge, in above-mentioned steps S2, when assessment obtains needing the transmission power control command of up transmission for decline (DOWN), first perform following step:
Whether step S21a, judge that mobile terminal is current and be in the process being about to carry out cell merge:
Be not in the process being about to carry out cell merge if mobile terminal is current, then the transmission power control command needing up transmission be set according to the first assessment result, go to step S5 subsequently;
Be in the process being about to carry out cell merge if mobile terminal is current, then go to step S3.
Whether, in preferred embodiment of the present invention, if judge, TPC1 is DOWN, then, before (namely carrying out TPC assessment to Target cell) is assessed in execution second, first judge that mobile terminal is current and be in the process being about to carry out cell merge.In preferred embodiment of the present invention, as described above, moment mobile terminal being received cell re-configuration message is designated as the first moment t1, and mobile terminal is designated as the second moment t2 according to the moment performing cell handover operations that arranges of cell re-configuration message, then when current timing node t is between the first moment t1 and the second moment t2, (t1≤t≤t2) represents that current mobile terminal is in the process being about to carry out cell merge.
In preferred embodiment of the present invention, when mobile terminal is in the process being about to carry out cell merge, directly goes to step S3, namely TPC assessment is carried out to Target cell;
In preferred embodiment of the present invention, when mobile terminal is not in the process being about to carry out cell merge, directly TPC3 is set as equaling TPC1, and goes to step S5.
In preferred embodiment of the present invention, in these cases, namely when mobile terminal receives cell re-configuration message and starts to carry out cell merge, in above-mentioned steps S3, the TPC error rate that the current transmitting power control error rate (TPC error rate) received is corresponding current service cell.
In preferred embodiment of the present invention, as shown in Figure 4, after mobile terminal self detects that 1D event occurs in other communities of non-present Serving cell in Active Set, cell switch process is started.In these cases, in step S2, when assessment obtains needing the transmission power control command of up transmission for declining, first perform following step:
Step S21b, judges the threshold value whether current channel quality is preset lower than:
If channel quality is not less than threshold value, then the transmission power control command needing up transmission is set according to the first assessment result, goes to step S5 subsequently;
If channel quality is lower than threshold value, then go to step S3.
In preferred embodiment of the present invention, first calculate current channel quality Q1 according to the TPC quality received.
In preferred embodiment of the present invention, if current channel quality Q1 lower than one preset threshold value Q0 time, then represent that now channel quality is poor, directly go to step S3 and carry out the follow-up assessment to Target cell;
If when current channel quality Q1 is not less than threshold value Q0, represent that present channel quality is normal, then the direct TPC3 by up reality transmission is set as equaling TPC1.
In preferred embodiment of the present invention, in above-mentioned situation, namely when mobile terminal self detects that other communities of non-present Serving cell in Active Set 1D event occur and start cell switch process, in above-mentioned steps S3, the current TPC error rate obtained can be the pre-configured TPC error rate of system, the TPC error rate of namely known Target cell, and it is not pre-configured and when informing corresponding TPC error rate in system, namely, when TPC error rate is unknown, the TPC error rate of current area also can be adopted to carry out corresponding TPC assessment.
In preferred embodiment of the present invention, TPC quality can be calculated by detection signal-to-noise ratio and obtain (the TPC quality of corresponding different districts obtains by detecting corresponding signal to noise ratio);
In preferred embodiment of the present invention, channel quality Q1 can be calculated by detection signal-to-noise ratio equally and obtain.
In preferred embodiment of the present invention, above-mentioned cell merge processing method is applicable to WCDMA communication system.
In preferred embodiment of the present invention, also provide a kind of mobile terminal, comprising above-mentioned cell merge treatment system.
In preferred embodiment of the present invention, also provide a kind of mobile terminal, wherein adopt above-mentioned cell merge processing method.
The foregoing is only preferred embodiment of the present invention; not thereby embodiments of the present invention and protection range is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilizations specification of the present invention and diagramatic content and apparent change obtain in protection scope of the present invention.
Claims (14)
1. a cell merge treatment system, is applicable to mobile terminal; It is characterized in that, comprising:
First assessment unit, for needing the transmission power control command of up transmission according to the transmitting power control quality of current service cell and transmitting power control error rate assessment accordingly, and exports corresponding first assessment result;
Second assessment unit, connect described first assessment unit, for according to described first assessment unit, the transmitting power control quality evaluation of the Target cell that will be switched to according to current described transmitting power control error rate and described mobile terminal when needing the described transmission power control command of up transmission to be assessed as decline needs the described transmission power control command of up transmission, and exports corresponding second assessment result;
Processing unit, connect described first assessment unit and described second assessment unit respectively, when needing the described transmission power control command of up transmission to be assessed as decline, described processing unit arranges the described transmission power control command needing up transmission according to described first assessment result, or
Described processing unit arranges the described transmission power control command needing up transmission according to described second assessment result.
2. cell merge treatment system as claimed in claim 1, is characterized in that, also comprise:
First judging unit, be connected between described first assessment unit and described second assessment unit, and connect described processing unit, described first judging unit is used for according to described first assessment result, judge that described mobile terminal is current when needing the described transmission power control command of up transmission to be assessed as decline whether to be in the process being about to carry out cell merge, and export corresponding first judged result;
Second judging unit, be connected between described first assessment unit and described second assessment unit, and connect described processing unit, described second judging unit is used for according to described first assessment result, judge the threshold value whether current channel quality is preset lower than when needing the described transmission power control command of up transmission to be assessed as decline, and export corresponding second judged result;
Described second assessment unit according to described first judged result, described mobile terminal is current be in the process being about to carry out cell merge time to needing the described transmission power control command of up transmission to assess, or
Described second assessment unit, according to described second judged result, is assessed the described transmission power control command of the up transmission of needs lower than during described threshold value at current described channel quality.
3. cell merge treatment system as claimed in claim 2, is characterized in that, also comprise:
Trigger element, connects described first judging unit and described second judging unit respectively;
Described trigger element is used for starting described first judging unit after described mobile terminal receives corresponding cell re-configuration message, or
Described trigger element starts described second judging unit for detecting at described mobile terminal after 1D event occurs in non-described current service cell in Active Set.
4. cell merge treatment system as claimed in claim 2, is characterized in that,
The moment that described mobile terminal receives corresponding cell re-configuration message was the first moment;
Described mobile terminal was the second moment according to the moment of described cell re-configuration message activation cell handover operations;
Whether by the current timing node of detection, whether described trigger element judges between described first moment and described second moment that described mobile terminal is current is in the process being about to carry out cell merge.
5. cell merge treatment system as claimed in claim 1, is characterized in that, be applicable to WCDMA communication system.
6. cell merge treatment system as claimed in claim 1, is characterized in that, be applicable to described mobile terminal and switch to HSPA connection mode and FDPCH connection mode.
7. a cell merge processing method, is applicable to mobile terminal; It is characterized in that, specifically comprise:
Step S1, detects and is about to carry out cell merge;
Step S2, according to the transmitting power control quality of the corresponding current service cell received and the transmission power control command of the up transmission of corresponding transmitting power control error rate assessment needs, and exports corresponding first assessment result:
If described first assessment result represents that the described transmission power control command of the up transmission of needs is assessed as rising, then the described transmission power control command needing up transmission is set according to described first assessment result, goes to step S5 subsequently;
If described first assessment result represents that the described transmission power control command of the up transmission of needs is assessed as decline, then go to step S3;
Step S3, according to current transmitting power control error rate and the described transmission power control command transmitting power control quality evaluation in requisition for the Target cell switched to being needed to up transmission, and exports corresponding second assessment result;
Step S4, arranges the described transmission power control command needing up transmission according to described second assessment result;
Step S5, sends the described transmission power control command be provided with, with backed off after random.
8. cell merge processing method as claimed in claim 7, it is characterized in that, in described step S1, described mobile terminal receives corresponding cell re-configuration message, then detect and be about to carry out cell merge; In described step S2, when assessment obtains needing the described transmission power control command of up transmission for declining, first perform following step:
Whether step S21a, judge that described mobile terminal is current and be in the process being about to carry out cell merge:
Be not in the process being about to carry out cell merge if described mobile terminal is current, then the described transmission power control command needing up transmission be set according to described first assessment result, go to step S5 subsequently;
Be in the process being about to carry out cell merge if described mobile terminal is current, then go to described step S3.
9. cell merge processing method as claimed in claim 8, is characterized in that,
Described mobile terminal is received the moment of described cell re-configuration message as the first moment;
Using described mobile terminal according to the moment of described cell re-configuration message activation cell handover operations as the second moment;
In described step S21a, if current timing node is between described first moment to described second moment, then judges that described mobile terminal is current and be in the process being about to carry out cell merge;
If current timing node was positioned at outside described first moment to described second moment, then judges that described mobile terminal is current and be not in the process being about to carry out cell merge.
10. cell merge processing method as claimed in claim 7, is characterized in that, in described step S1, described mobile terminal detects that in Active Set, 1D event occurs in non-described current service cell, then detect and be about to carry out cell merge;
In described step S2, when assessment obtains needing the described transmission power control command of up transmission for declining, first perform following step:
Step S21b, judges the threshold value whether current channel quality is preset lower than:
If described channel quality is not less than described threshold value, then the described transmission power control command needing up transmission is set according to described first assessment result, goes to step S5 subsequently;
If described channel quality is lower than described threshold value, then go to described step S3.
11. cell merge processing methods as claimed in claim 7, is characterized in that, be applicable to WCDMA communication system.
12. cell merge processing methods as claimed in claim 7, is characterized in that, before performing described step S1, first described mobile terminal switches to HSPA connection mode and FDPCH connection mode.
13. 1 kinds of mobile terminals, is characterized in that, comprise the cell handover system as described in claim 1-6.
14. 1 kinds of mobile terminals, is characterized in that, adopt the cell switching method as described in claim 7-12.
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| CN105578520B (en) | 2019-04-26 |
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