CN104735763A - SIR (Signal to Interference Ratio) adjusting method in external loop power control and terminal equipment - Google Patents

Abstract

The invention relates to the communication field, and discloses a SIR (Signal to Interference Ratio) adjusting method in external loop power control and terminal equipment. In combination with a BLER and a TRC order, whether a transmitting end is in a power limited wind up state is judged, and in a wind up state, a SIR target value is not adjusted; and in a non-wind up state, the SIR target value is adjusted according to a CRC (Cyclic Redundancy Check) result. Judgment on the wind up state is more accurate and fast, the problem that when a link is back to normal from the wind up state, the over-high SIR target value causes the transmitting power of the transmitting end to be higher than the actually-needed value, and huge interference is caused to other users can be solved, and robustness of the present external loop power control algorithm is enhanced.

Description

Regulation method of SIR in external circule power control and terminal equipment

Technical field

The present invention relates to the communications field, the external circule power control technology particularly in cdma system.

Background technology

The service quality QoS that the service demand fulfillment that wireless cellular network provides for each user is certain, but QoS receives the SIR(Signal to Interference Ratio of signal primarily of each user, signal interference ratio) determine.For CDMA(Code Division Multiple Access, code division multiple access) cellular system, in same community, all users use identical frequency range and time slot, and the standard/orthogonal property only by spreading code between user is mutually isolated.But because the reason such as multipath, time delay of wireless channel makes the their cross correlation between each subscriber signal undesirable, the signal of other user produces interference to active user's signal, and this kind of interference is called as multi-access inference MAI.Like this, the interference to active user all can be increased when user's number in community increases or other user power promotes, the received signal quality of active user is caused to decline, when this kind of interference large to a certain extent time, active user just can not proper communication, therefore cdma system is a serious interference limiting system, and the size of interference directly has influence on power system capacity.

Power control techniques can effectively address this problem, it can adjust the transmitting power of each user, compensate for channel decline, counteracting near-far interference, each user is maintained can keep in the minimum standard of proper communication, so just maximally can reduce the interference to other users, thus improve power system capacity.

Current cdma system how use close-loop power control, comprises inner-loop power control and open sea wharf two parts, as mistake! Do not find Reference source.Shown in.Wherein, open sea wharf based on type of service and CRC(Cyclic Redundancy Check, cyclic redundancy check (CRC)) check results or the error rate/Block Error Rate BER/BLER adjusts can the sir target value of guaranteed qos; Inner-loop power control adjusts transmitting power according to the difference request transmitting terminal of sir measurement value and sir target value, and when sir measurement value is less than or equal to sir target value, TPC sends UP command " 1 "; Otherwise TPC sends down command " 0 ".

When transmitter is in feeble field, transmitter can not make link-quality reach desired value due to power limited.Now open sea wharf constantly increases sir target value, and this phenomenon is called wind up effects.In this case, sir target value may reach maximum, when link-quality recovers normal, needs the cost long time sir target value could be reduced to normal value.During this period of time, will transmitter transmitting power be caused higher than the value required for reality, thus larger interference is caused to other users.So need the ever-increasing phenomenon of sir target value that wind up effects detection algorithm antagonism power limited causes.

As shown in Figure 1, inner-loop power control is controlled by external circule power control, can say that the effect of closed-loop power control depends on the accuracy of external circule power control to a great extent.Typical external circule power control algorithm is mainly divided into two large classes: based on the algorithm of BLER statistics and the algorithm based on CRC check.Current use, based on the algorithm of CRC check, mainly divides three steps:

1) a CRC check result is often returned, then add up M/BLERtarget nearest check results, export BLER statistical value and (for the situation that the CRC check result in an initial M/BLERtarget-1 statistic window is individual less than M/BLERtarget, during process, fill 0 forward; Wherein, M is the long factor of statistic window);

2) the upper mediation downward step-length of sir target value is adjusted according to the statistical value of the BLER of 0;

3) lower step-length adjustment sir target value according to the upper mediation of CRC check result and 0, be specially: 1-raises sir target value according to rise step-length; 0-lowers sir target value according to downward step-length;

Due to power limited under wind up state, BLERtarget can not be satisfied.According to actual characteristic, when entering wind up state, BLER has a process increased gradually, and when jumping out wind up state, BLER has a process reduced gradually, so carry out detecting entering and jumping out of wind up state based on this feature at present, specific as follows:

Wind up enters: if it is 4 at present that the number of times that BLER increases (not allowing BLER to lower) is continuously more than or equal to pre-wind up status threshold InThpre(), then enter pre-wind up state; Continue the number of times that statistics BLER increases (allow BLER lower) after pre-wind up state: if it is 10 at present that the number of times that BLER increases is more than or equal to wind up status threshold InTh() and wherein BLER reduce number of times to be less than or equal to InThDn(be 4 at present), then enter wind up state, otherwise keep non-windup state;

Wind up jumps out: if BLER reduces (not allowing BLER to lower) number of times continuously, to be more than or equal to non-wind up status threshold OutTh(be 4 at present) and BLER/BLERtarget is less than or equal to OutThBLER(is 2 at present), then enter non-wind up state, otherwise keep wind up state.

But in art methods implementation process, when power limited is not serious, the feature that when entering wind up state, BLER increases continuously is not obvious, and current scheme easily causes undetected; Equally, the feature that when jumping out wind up state, BLER reduces continuously is not obvious, and current scheme easily causes leaking jumps; Undetected meeting causes the continuous increase of sir target value, and leaking to jump then to affect the control of normal power.Meanwhile, because the change of BLER is based on CRC check result, change is comparatively slow, and cause detecting entering and jump out and needing the long period of wind up state, it is longer that the wind up state that namely scheme can cause at present detects time delay; What time delay was longer detect can cause the continuous increase of sir target value or make sir target value constant and affect normal power and control.

Summary of the invention

The object of the present invention is to provide the regulation method of SIR in a kind of external circule power control and terminal equipment, make the judgement of wind up state more accurately fast, thus avoid link normal from wind up recovering state time, too high the caused transmitting terminal transmitting power of sir target value is higher than the value required for reality, thus other users are caused to the problem of larger interference, enhance the robustness of current OLPC algorithm.

For solving the problems of the technologies described above, the invention provides the regulation method of SIR in a kind of external circule power control, comprising following steps:

The block error rate BLER that receiving terminal Real-Time Monitoring is added up according to cyclic redundancy check (CRC) result, the W that statistics is preset recently _tPCindividual transmitting power control TPC control command; Wherein, W _tPCfor being greater than the natural number of 1;

BLER and the TPC control command monitored according to receiving terminal judges that transmitting terminal is current and whether is in transmit power limited wind up state;

If transmitting terminal is current be in wind up state, then receiving terminal is forbidden adjusting signal interference ratio sir target value; If transmitting terminal is current be in non-wind up state, then receiving terminal is according to CRC result adjustment sir target value.

Present invention also offers a kind of terminal equipment, comprise:

BLER statistical module, for according to cyclic redundancy check (CRC) result statistics of error rate BLER;

TPC statistical module, for adding up the W preset recently _tPCindividual TPC control command;

Monitoring modular, for the TPC control command of BLER and the TPC statistical module counts of Real-Time Monitoring BLER statistical module counts;

Wind up condition judgment module, for according to monitoring module monitors to BLER and TPC control command judge that transmitting terminal is current and whether be in transmit power limited wind up state;

Sir target value adjusting module, for when wind up condition judgement module judges that transmitting terminal is in windup state, forbids adjusting sir target value; When wind up condition judgement module judges that transmitting terminal is in non-wind up state, according to CRC result adjustment sir target value.

Embodiment of the present invention in terms of existing technologies, has increased TPC newly as judging whether transmitting terminal is in the foundation of wind up state, and in prior art, has only judged entering or jumping out of wind up state according to the variation tendency of BLER.But when power limited is not serious, the variation tendency entering or jump out BLER during wind up state is not obvious, easily cause undetected, and meanwhile, when entering or jump out wind up state, TPC command can relatively changing according to sir target value and sir measurement value, compared to the variation tendency of BLER, the change of TPC is more accurate, simultaneously, because the change of BLER is based on CRC check result, and the change of TPC changes based on SIR, the generating period of obvious TPC is shorter, so entering and jumping out of wind up state can be detected faster and more accurately in conjunction with TPC.And, by the quick and precisely judgement to wind up state, when link enters wind up state, no longer change sir target value, avoid link normal from wind up recovering state time, too high the caused transmitting terminal transmitting power of sir target value higher than the value required for reality, thus causes the problem of larger interference to other users; When link jumps out wind up state, to control adjustment sir target value according to normal power in time, improve the service efficiency of link, enhance the robustness of current OLPC algorithm.

As further improvement, judge that transmitting terminal is current in BLER and the TPC control command monitored according to receiving terminal and whether be in the step of transmit power limited wind up state, comprise following sub-step:

If receiving terminal monitors BLER be more than or equal to InTh _bLER, and in TPC control command, the number of UP command is more than or equal to InTh _tPC, then judge that transmitting terminal is current and be in transmit power limited windup state; Wherein, InTh _bLERfor preset BLER enters thresholding, InTh _tPCfor preset TPC enters thresholding;

If receiving terminal monitors the number of times that BLER reduces continuously be more than or equal to OutTh _bLER, and in TPC control command, the number of down command is more than or equal to OutTh _tPC, then judge that transmitting terminal is in non-wind up state; Wherein, OutTh _bLERfor preset BLER jumps out thresholding, OutTh _tPCfor preset TPC jumps out thresholding.

The present inventor also finds following feature: when entering wind up state, because transmitting power can not be satisfied, the probability of CRC decoding error increases, BLER is caused to increase gradually, the simultaneously corresponding rise of sir target value, but due to now transmit power limited, sir measurement value is corresponding on the low side, so inner ring is less than or equal to sir target value according to sir measurement value, constantly send TPC UP command, now the number ratio of UP command will increase in TPC command as seen; When after power limited a period of time, BLER value is then stabilized in BLER value corresponding to limited power state, and (this value is greater than BLER _target).When jumping out wind up state, because transmitting power is unrestricted, power raises, the probability that CRC decoding is correct increases, BLER reduces gradually, simultaneously the corresponding increase of sir measurement value, and inner ring is greater than sir target value according to sir measurement value, continuous transmission TPC down command, now the number ratio of down command will increase in TPC command as seen; After limited cancellation a period of time, BLER is stabilized in BLER _target, TPC UP command is suitable with down command ratio simultaneously.

So inventor is based on above feature, when judging to enter wind up state, utilize BLER occurrence as one of basis for estimation, though can effectively avoid BLER enter windup state when ascendant trend is not obvious and be missed, utilize TPC UP command or down command ratio can accelerate the judgement cycle as one of basis for estimation simultaneously, further, both bases for estimation are quantized further, effectively can improve speed and the accuracy of wind up condition adjudgement.

As further improvement, under wind up state, receiving terminal is forbidden in the step adjust sir target value, and sir target value is that BLER is target Block Error Rate BLER under the last time non-wind up state _targettime the sir target value that obtains.

When entering wind up state, for avoiding sir target value constantly to raise, then forbid the adjustment of sir target value, and use BLER for target Block Error Rate BLER _targettime the sir target value that obtains, this value is the stationary value under normal condition, and inner ring can carry out power control according to this believable sir target value simultaneously.

As further improvement, under wind up state, receiving terminal is forbidden in the step adjust signal interference ratio sir target value, and sir target value is under the last time non-wind up state, the last W that BLER obtains in preset interval _sIRthe mean value of individual sir target value; Wherein, preset interval comprises BLER _target, W _sIRfor being greater than the natural number of 1.According to the computational methods of BLER, when BLER is target Block Error Rate BLER _targettime, the sir target value obtained may be different, and its value can exist fuctuation within a narrow range, and for making sir target value more accurately credible, the present invention adopts the nearest W obtained in tolerance interval BLER _sIRindividual sir target value is averaged.

As further improvement, the lower limit in preset interval is 0.7BLER _target, the upper limit is 1.3BLER _target.The concrete interval further illustrating BLER tolerance interval is at BLER _targetup and down between 30%.

As further improvement, in the following manner according to CRC result statistics of error rate BLER:

After each the cyclic redundancy check (CRC) result obtaining reception data, according to the N number of CRC result statistics BLER obtained recently;

Wherein, the value of N is by the long factor M of the statistic window preset and BLER _targetdetermine.

BLER is calculated by CRC result _targetvalue, makes BLER _targetit is more accurate that value obtains.

Accompanying drawing explanation

Fig. 1 is according to close-loop power control schematic diagram of the prior art;

Fig. 2 is according to the regulation method of SIR flow chart in the external circule power control of first embodiment of the invention;

Fig. 3 is according to the regulation method of SIR flow chart in the external circule power control of second embodiment of the invention;

Fig. 4 is the terminal equipment structural representation according to third embodiment of the invention;

Fig. 5 is the terminal equipment structural representation according to four embodiment of the invention.

Embodiment

For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the embodiments of the present invention are explained in detail.But, persons of ordinary skill in the art may appreciate that in each execution mode of the present invention, proposing many ins and outs to make reader understand the application better.But, even without these ins and outs with based on the many variations of following execution mode and amendment, each claim of the application technical scheme required for protection also can be realized.

First execution mode of the present invention relates to the regulation method of SIR in a kind of external circule power control, comprises following steps, as shown in Figure 2:

Step 201, statistics TPC control command raises number W _up, then perform step 202.Specifically, TPC command is added up by sliding window, if establish W _tPCfor statistic window is long, that this step is added up is nearest W _tPCw in individual TPC _up, the statistic window length of such as present embodiment can adopt 180.Furtherly, the W drawn is added up by TPC sliding window _upthe rise ratio of TPC can be judged.

Here also it should be noted that, when using TPC sliding window first, can insert initial value to sliding window, the fill method of present embodiment is alternately fill N nearest in UP command and down command _tPCindividual, wherein N _tPCthe actual inner ring number of times referred in an outer shroud, during different business, N _tPCmay be different, but when performing same business, N _tPCfor fixed value.Give an example, in speech communication business, while 1 outer shroud, have 30 inner ring, then when present embodiment is applied to transmitting voice signal algorithm, N _tPCvalue is 30.

Step 202, BLER in counting statistics window, performs step 203 then.Namely, receiving terminal monitoring is according to the block error rate BLER of nearest N number of CRC result statistics.Specifically, in present embodiment, BLER statistical value adopts the BLER statistical value adjusting sir target value adjustment step-length, namely often obtains a CRC result, then adds up nearest N number of CRC check result, exports BLER statistical value.Wherein, the value of N is by the long factor M of the statistic window preset and target Block Error Rate BLER _targetdetermine, as N=M/BLER _target.In the present embodiment, if initial M/BLER _targetcRC check result in-1 statistic window is less than M/BLER _targetindividual situation, fills 0 forward during process.

It should be noted that at this, although above-mentioned steps 201 and step 202 have sequencing when illustrating, in fact because computerized algorithm is in fact almost synchronous, so step 201 and step 202 can be exchanged arbitrarily, enter step 203 again after only needing step 1 and step 2 all complete, all can not affect the object that present embodiment needs to reach.

Step 203, judges whether BLER equals BLER _target, if so, then perform step 204; If not, then step 205 is performed.

Step 204, record sir target value, performs step 205 then.Step 203 and step 204 complete the sir target value of record when BLER is BLER desired value jointly.This value will transmitting terminal be judged enter wind up state after used.That is, when BLER is not BLER _targettime, sir target value may be too high or too low, do not do to store to use.

Step 205, if meet BLER>=InTh _bLERand Wup>=InTh _tPC, then perform step 207, otherwise perform step 206.This step is judge whether transmitting terminal enters the core of wind up state, wherein, and InTh _bLERfor preset BLER enters thresholding, InTh _tPCfor preset TPC enters thresholding, InTh _bLERwith InTh _tPCconcrete value can obtain based on experience value, also can acquire according to the simulation result carried out wind up state and non-wind up state.InTh is adopted in present embodiment _bLERfor 3*BLER _target, TPC sliding window length is 180, InTh _tPCbe 103; That is, if meet BLER>=3*BLER _targetand Wup>=103, then judge that transmitting terminal enters wind up state, perform step 207, if do not met, then judge that transmitting terminal is still in non-wind up state, continue to perform step 206.

Step 206, slip BLER and TPC statistic window, perform step 207 then.That is, to slide BLER statistic window with step-length 1, with step-length N _tPCslip TPC statistic window, and return and proceed to step 201.

Step 207, upgrades N nearest in slip statistic window _tPCindividual TPC, and the number W adding up TPC down command in TPC sliding window _dw; Upgrade CRC nearest in BLER statistic window, then perform step 208.

Step 208, calculates the BLER statistical value in sliding window, then performs step 209.

Step 209, according to formula (1.1) refresh counter CntDn, performs step 210 then.

$\mathrm{CntDn}=\left\{\begin{array}{cc}\mathrm{CntDn}+1& \mathrm{BLER}<\mathrm{BLER}\_\mathrm{Last}\\ \mathrm{CntDn}& \mathrm{BLER}=\mathrm{BLER}\_\mathrm{Last}\\ 0& \mathrm{BLER}>\mathrm{BLER}\_\mathrm{Last}\end{array}\right.---\left(1.1\right)$

Wherein, the initial value of setting CntDn is 0, BLER_Last is a front BLER value.That is, record by counter CntDn the number of times that BLER reduces continuously, specifically, when BLER reduces, counter adds 1, and when BLER is constant, counter is constant, and when BLER becomes large, counter resets immediately, namely waits for that subsequent step counts again.

Step 210, if counter CntDn value is more than or equal to decision threshold OutTh _bLERand W _dwbe more than or equal to OutTh _tPC, then step 201 is performed; Otherwise perform step 211.This step is judge whether transmitting terminal enters the core of wind up state, wherein, and OutTh _bLERfor preset BLER jumps out thresholding, OutTh _tPCfor preset TPC jumps out thresholding, OutTh _bLERand OutTh _tPCconcrete value can obtain based on experience value, also can acquire according to the simulation result carried out wind up state and non-wind up state.OutTh is adopted in present embodiment _bLERbe 4, TPC sliding window length be 180, OutTh _tPCbe 67; That is, if meet the number of times that BLER declines continuously to be more than or equal to 4 times, and TPC down command number is more than or equal to 67, then judge that transmitting terminal enters non-wind up state, perform step 201, if do not met, then judge that transmitting terminal is still in wind up state, continue to perform step 211, CntDn is reset simultaneously.

Step 211, to slide BLER statistic window with step-length 1, with step-length N _tPCslip TPC statistic window, and return and proceed to step 207.

It should be noted that, in whole process, for convenience of description, distinguish two states by the mark WindUpFlag arranged: WindUpFlag=0, represent that transmitting terminal is in non-wind up state; WindUpFlag=1, represents that transmitting terminal has entered wind up state.Be not difficult to find, in present embodiment, when step 201 is to step 206, WindUpFlag=0, when step 207 is to step 211, WindUpFlag=1; Meanwhile, as WindUpFlag=0, according to the CRC check result adjustment sir target value based on BLER variable step; As WindUpFlag=1, sir target value is for meeting BLER _targetsir target value SIR _windUp, the sir target value namely recorded in step 204.

Embodiment of the present invention in terms of existing technologies, has increased TPC newly as judging whether transmitting terminal is in the foundation of wind up state, and in prior art, has only judged entering or jumping out of wind up state according to the variation tendency of BLER.But when power limited is not serious, the variation tendency entering or jump out BLER during wind up state is not obvious, easily cause undetected, and meanwhile, when entering or jump out wind up state, TPC command can relatively changing according to sir target value and sir measurement value, compared to the variation tendency of BLER, the change of TPC is more accurate, simultaneously, because the change of BLER is based on CRC check result, and the change of TPC changes based on SIR, the generating period of obvious TPC is shorter, so entering and jumping out of wind up state can be detected faster and more accurately in conjunction with TPC.And, by the quick and precisely judgement to wind up state, when link enters wind up state, no longer change sir target value, avoid link normal from wind up recovering state time, too high the caused transmitting terminal transmitting power of sir target value higher than the value required for reality, thus causes the problem of larger interference to other users; When link jumps out wind up state, to control adjustment sir target value according to normal power in time, improve the service efficiency of link, enhance the robustness of current OLPC algorithm.

Simultaneously, transmitting terminal meets following characteristics when entering or jump out wind up state: when entering wind up state, because transmitting power can not be satisfied, the probability of CRC decoding error increases, and causes BLER to increase gradually, the corresponding rise of sir target value simultaneously, but due to now transmit power limited, sir measurement value is corresponding on the low side, so inner ring is less than or equal to sir target value according to sir measurement value, continuous transmission TPC UP command, now the number ratio of UP command will increase in TPC command as seen; When after power limited a period of time, BLER value is then stabilized in BLER value corresponding to limited power state, and (this value is greater than BLER _target).When jumping out wind up state, because transmitting power is unrestricted, power raises, the probability that CRC decoding is correct increases, BLER reduces gradually, simultaneously the corresponding increase of sir measurement value, and inner ring is greater than sir target value according to sir measurement value, continuous transmission TPC down command, now the number ratio of down command will increase in TPC command as seen; After limited cancellation a period of time, BLER is stabilized in BLER _target, TPC UP command is suitable with down command ratio simultaneously.

Present embodiment is also based on above feature, when judging to enter wind up state, utilize BLER occurrence as one of basis for estimation, though can effectively avoid BLER enter wind up state when ascendant trend is not obvious and be missed, utilize TPC UP command or down command ratio can accelerate the judgement cycle as one of basis for estimation simultaneously, further, both bases for estimation are quantized further, effectively can improve speed and the accuracy of wind up condition adjudgement.

Second execution mode of the present invention relates to the regulation method of SIR in a kind of external circule power control equally, present embodiment roughly the same with the first execution mode (as shown in Figure 3), the main distinction be step 303 and step 304 different with step 204 from the step 203 in the first execution mode.

Step 301 in present embodiment is similar to step 202 to the step 201 in the first execution mode to step 302, does not repeat them here.

In present embodiment, step 303, judges whether BLER meets BLER>=0.7BLER _target, and BLER≤1.3BLER _target, if so, then perform step 304; If not, then step 305 is performed.

Step 304, the average of record sir target value.That is, present embodiment is not only to record and is worked as BLER=BLER _targettime that sir target value, but several sir target values obtained when meeting a pre-set interval as BLER are averaged to (interval in present embodiment adopts 1.3BLER _target>=BLER>=0.7BLER _target), this mean value is designated as SIR _windUptransmitting terminal be judged enter wind up state after used, namely used in follow-up step 307 to step 311, namely used as WindUpFlag=1.Specifically, the method for averaging in present embodiment be the statistic window method of average, such as, setting statistic window long W _sirbe 200, then exactly nearest 200 the sir target values obtained in scope met to BLER and average; Here be also noted that for initial W _sirsir target value in-1 statistic window is less than W _sirindividual situation, fills SIR forward during process _ini, those of ordinary skill in the art can according to actual sets itself, SIR in present embodiment _ini=8dB.What also need to illustrate is, the span of BLER is according to those of ordinary skill in the art, when the value of BLER exceeds the scope of upper and lower 30%, then think that BLER value is now unreliable, so, for obtaining accurate believable sir value in present embodiment, just need under believable BLER value prerequisite.

According to the computational methods of BLER, when BLER is target Block Error Rate BLER _targettime, the sir target value obtained may be different, and its value can exist fuctuation within a narrow range, and for making the sir target value that obtains more accurately credible, the present invention adopts the nearest W obtained in tolerance interval BLER _sIRindividual sir target value is averaged.

In addition, the step 305 in the second execution mode is similar to step 211 to the step 205 in the first execution mode to step 311, does not repeat them here.

It should be noted that, above the step of various method divide, just in order to be described clearly, a step can be merged into when realizing or some step is split, be decomposed into multiple step, as long as comprise identical logical relation, all in the protection range of this patent; To adding inessential amendment in algorithm or in flow process or introducing inessential design, but the core design not changing its algorithm and flow process is all in the protection range of this patent.

Third embodiment of the invention relates to a kind of terminal equipment, and its syndeton as shown in Figure 4, comprises:

BLER statistical module, for according to cyclic redundancy check (CRC) result statistics of error rate BLER;

TPC statistical module, for adding up the W preset recently _tPCindividual TPC control command;

Monitoring modular, for the TPC control command of BLER and the TPC statistical module counts of Real-Time Monitoring BLER statistical module counts;

Wind up condition judgment module, for according to monitoring module monitors to BLER and TPC control command judge that transmitting terminal is current and whether be in transmit power limited wind up state;

Sir target value adjusting module, for when wind up condition judgement module judges that transmitting terminal is in windup state, forbids adjusting sir target value; When wind up condition judgement module judges that transmitting terminal is in non-wind up state, according to CRC result adjustment sir target value.

Wherein, following submodule is comprised in wind up condition judgment module:

Enter wind up condition judgement submodule: for when monitoring module monitors to BLER be more than or equal to InTh _bLER, and in TPC control command, the number of UP command is more than or equal to InTh _tPC, then judge that transmitting terminal is in wind up state; Wherein, InTh _bLERfor preset BLER enters thresholding, InTh _tPCfor preset TPC enters thresholding;

Jump out wind up condition judgement submodule: for when monitoring module monitors to the number of times that reduces continuously of BLER be more than or equal to OutTh _bLER, and in TPC control command, the number of down command is more than or equal to OutTh _tPC, then judge that transmitting terminal is in non-wind up state; Wherein, OutTh _bLERfor preset BLER jumps out thresholding, OutTh _tPCfor preset TPC jumps out thresholding.

Embodiment of the present invention in terms of existing technologies, the main distinction and effect are: increased TPC statistical module in present embodiment newly and added up TPC command, basis for estimation in wind up condition judgment module has also increased the judgement to TPC command newly, and in prior art, only has the BLER statistical module for adding up BLER, also only judge according to the change of BLER in wind up condition judgment module, not serious at power limited like this, the variation tendency of BLER and unconspicuous time, judge module easily occurs undetected, and the generating period of TPC is shorter than the generating period of BLER, that is combine TPC and BLER two parameters whether to be in wind up state to link and to judge not only can improve accuracy, can also accelerate to detect judgement speed.

Especially, entering/jump out wind up condition judgement submodule in present embodiment utilizes the occurrence of BLER as basis for estimation, though effectively avoid BLER enter wind up state when ascendant trend is not obvious and be missed, utilize TPC UP command or down command ratio can accelerate the judgement cycle as one of basis for estimation simultaneously, and, both bases for estimation are quantized further, effectively can improve speed and the accuracy of windup condition adjudgement.

Also it should be noted that, comprise sir target value first in sir target value adjusting module and obtain submodule, for obtaining under the last time non-wind up state, monitoring module monitors is target Block Error Rate BLER to BLER _targettime the sir target value that obtains.

Also it should be noted that, in BLER statistical module, also comprise BLER operator module, for after each the cyclic redundancy check (CRC) result obtaining reception data, according to the N number of CRC result computing BLER obtained recently; Wherein, the value of N is by the long factor M of the statistic window preset and target Block Error Rate BLER _targetdetermine.

Be not difficult to find, present embodiment is the system embodiment corresponding with the first execution mode, and present embodiment can be worked in coordination with the first execution mode and be implemented.The relevant technical details mentioned in first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the first execution mode.

It is worth mentioning that, each module involved in present embodiment is logic module, and in actual applications, a logical block can be a physical location, also can be a part for a physical location, can also realize with the combination of multiple physical location.In addition, in order to outstanding innovative part of the present invention, the unit not too close with solving technical problem relation proposed by the invention is not introduced in present embodiment, but this does not show the unit that there is not other in present embodiment.

Four embodiment of the invention relates to a kind of terminal equipment equally, 4th execution mode substantially identical with the 3rd execution mode (as shown in Figure 5), the main distinction is: in the 4th execution mode, the second acquisition submodule is comprised in sir target value adjusting module, do not comprise first in the 3rd execution mode and obtain submodule, for obtaining under the last time non-wind up state, the last W that monitoring module monitors obtains in preset interval to BLER _sIRthe mean value of individual sir target value; Wherein, preset interval comprises BLER _target, W _sIRfor being greater than the natural number of 1.In present embodiment, preset interval is 1.3BLER _target>=BLER>=0.7BLER _target, according to the computational methods of BLER, when BLER is target Block Error Rate BLER _targettime, the sir target value obtained may be different, and its value can exist fuctuation within a narrow range, and for making the sir target value that obtains more accurately credible, the present invention adopts the nearest W obtained in tolerance interval BLER _sIRindividual sir target value is averaged.What also need to illustrate is, the span of BLER is according to those of ordinary skill in the art, when the value of BLER exceeds the scope of upper and lower 30%, then think that BLER value is now unreliable, so, for obtaining accurate believable sir value in present embodiment, just need under believable BLER value prerequisite.

Because the second execution mode and present embodiment are mutually corresponding, therefore present embodiment can be worked in coordination with the second execution mode and be implemented.The relevant technical details mentioned in second execution mode is still effective in the present embodiment, and the technique effect that can reach in this second embodiment can realize in the present embodiment too, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the second execution mode.

Persons of ordinary skill in the art may appreciate that the respective embodiments described above realize specific embodiments of the invention, and in actual applications, various change can be done to it in the form and details, and without departing from the spirit and scope of the present invention.

Claims (11)

1. the regulation method of SIR in external circule power control, is characterized in that, comprises following steps:

The block error rate BLER that receiving terminal Real-Time Monitoring is added up according to cyclic redundancy check (CRC) result, the W that statistics is preset recently _tPCindividual transmitting power control TPC control command; Wherein, described W _tPCfor being greater than the natural number of 1;

The described BLER monitored according to described receiving terminal and described TPC control command judge that transmitting terminal is current and whether are in transmit power limited wind up state;

If described transmitting terminal is current be in wind up state, then described receiving terminal is forbidden adjusting signal interference ratio sir target value; If described transmitting terminal is current be in non-wind up state, then described receiving terminal is according to described CRC result adjustment sir target value.

2. the regulation method of SIR in external circule power control according to claim 1, it is characterized in that, whether the described described BLER that monitors according to described receiving terminal and described TPC control command judge that transmitting terminal is current and are in the step of transmit power limited wind up state, comprise following sub-step:

If described receiving terminal monitors described BLER be more than or equal to InTh _bLER, and in described TPC control command, the number of UP command is more than or equal to InTh _tPC, then judge that transmitting terminal is current and be in transmit power limited wind up state; Wherein, described InTh _bLERfor preset BLER enters thresholding, described InTh _tPCfor preset TPC enters thresholding;

If described receiving terminal monitors the number of times that described BLER reduces continuously be more than or equal to OutTh _bLER, and in described TPC control command, the number of down command is more than or equal to OutTh _tPC, then judge that described transmitting terminal is in non-wind up state; Wherein, described OutTh _bLERfor preset BLER jumps out thresholding, described OutTh _tPCfor preset TPC jumps out thresholding.

3. the regulation method of SIR in external circule power control according to claim 1, it is characterized in that, described under wind up state described receiving terminal forbid in the step that sir target value is adjusted, described sir target value is that described BLER is target Block Error Rate BLER under the last time non-wind up state _targettime the sir target value that obtains.

4. the regulation method of SIR in external circule power control according to claim 1, it is characterized in that, described under wind up state described receiving terminal forbid in the step that signal interference ratio sir target value is adjusted, described sir target value is under the last time non-wind up state, the last W that described BLER obtains in preset interval _sIRthe mean value of individual sir target value; Wherein, described preset interval comprises described BLER _target, described W _sIRfor being greater than the natural number of 1.

5. the regulation method of SIR in external circule power control according to claim 4, is characterized in that, the lower limit in described preset interval is 0.7BLER _target, the upper limit is 1.3BLER _target.

6. the regulation method of SIR in external circule power control according to any one of claim 1 to 5, is characterized in that, in the following manner according to CRC result statistics of error rate BLER:

After each the cyclic redundancy check (CRC) result obtaining reception data, the N number of CRC result according to obtaining recently adds up described BLER;

Wherein, the value of described N is by the long factor M of the statistic window preset and described BLER _targetdetermine.

7. a terminal equipment, is characterized in that, comprises:

BLER statistical module, for according to cyclic redundancy check (CRC) result statistics of error rate BLER;

TPC statistical module, for adding up the W preset recently _tPCindividual TPC control command; Wherein, described W _tPCfor being greater than the natural number of 1;

Monitoring modular, for the described BLER of BLER statistical module counts described in Real-Time Monitoring and the described TPC control command of described TPC statistical module counts;

Wind up condition judgment module, for according to described monitoring module monitors to described BLER and described TPC control command judge that transmitting terminal is current and whether be in transmit power limited wind up state;

Sir target value adjusting module, for when described wind up condition judgement module judges that described transmitting terminal is in wind up state, forbids adjusting sir target value; When described wind up condition judgement module judges that described transmitting terminal is in non-wind up state, according to CRC result adjustment sir target value.

8. terminal equipment according to claim 7, is characterized in that, comprises following submodule in described wind up condition judgment module:

Enter wind up condition judgement submodule: for when described monitoring module monitors to described BLER be more than or equal to InTh _bLER, and in described TPC control command, the number of UP command is more than or equal to InTh _tPC, then judge that described transmitting terminal is in wind up state; Wherein, described InTh _bLERfor preset BLER enters thresholding, described InTh _tPCfor preset TPC enters thresholding;

Jump out wind up condition judgement submodule: for when described monitoring module monitors to the number of times that reduces continuously of described BLER be more than or equal to OutTh _bLER, and in described TPC control command, the number of down command is more than or equal to OutTh _tPC, then judge that described transmitting terminal is in non-wind up state; Wherein, described OutTh _bLERfor preset BLER jumps out thresholding, described OutTh _tPCfor preset TPC jumps out thresholding.

9. terminal equipment according to claim 7, it is characterized in that, comprise sir target value first in described sir target value adjusting module and obtain submodule, for obtaining under the last time non-wind up state, described monitoring module monitors is target Block Error Rate BLER to described BLER _targettime the sir target value that obtains.

10. terminal equipment according to claim 7, it is characterized in that, also comprise sir target value second in described sir target value adjusting module and obtain submodule, for obtaining under the last time non-wind up state, the last W that described monitoring module monitors obtains in preset interval to described BLER _sIRthe mean value of individual sir target value; Wherein, described preset interval comprises described BLER _target, described W _sIRfor being greater than the natural number of 1.

11. terminal equipments according to any one of claim 7 to 10, it is characterized in that, BLER operator module is also comprised in described BLER statistical module, for after each the cyclic redundancy check (CRC) result obtaining reception data, BLER according to the N number of CRC result computing obtained recently;

Wherein, the value of described N is by the long factor M of the statistic window preset and target Block Error Rate BLER _targetdetermine.