CN104735763B - Regulation method of SIR and terminal device in external circule power control - Google Patents

Regulation method of SIR and terminal device in external circule power control Download PDF

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Publication number
CN104735763B
CN104735763B CN201310699747.6A CN201310699747A CN104735763B CN 104735763 B CN104735763 B CN 104735763B CN 201310699747 A CN201310699747 A CN 201310699747A CN 104735763 B CN104735763 B CN 104735763B
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bler
wind
tpc
state
sir
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CN104735763A (en
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山珊
李丹妮
徐兵
邓瑞楠
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Leadcore Technology Co Ltd
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Leadcore Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/12—Outer and inner loops
    • H04W52/125—Outer and inner loops cascaded outer loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters

Abstract

The present invention relates to the communications field, the regulation method of SIR and terminal device in a kind of external circule power control are disclosed.In the present invention, combines BLER and TPC command judges whether transmitting terminal is in power limited wind up state, meanwhile, under wind up state, sir target value is not adjusted；Under non-wind up state, sir target value is adjusted according to CRC result.It is more accurate quick that the invention enables the judgements of wind up state, when restoring normal from wind up state so as to avoid link, transmitting terminal transmission power caused by sir target value is excessively high is higher than practically necessary value, the problem of to cause larger interference to other users, enhance the robustness of current OLPC algorithm.

Description

Regulation method of SIR and terminal device in external circule power control
Technical field
The present invention relates to the communications fields, in particular to the external circule power control technology in cdma system.
Background technique
Wireless cellular network is that the service that each user provides needs to meet certain service quality QoS, however QoS is main The SIR of signal is received by each user（Signal to Interference Ratio, signal interference ratio）It determines.For CDMA （Code Division Multiple Access, CDMA）Cellular system, all users use identical in same cell Frequency range and time slot, standard/orthogonal property between user only by spreading code are mutually isolated.However, due to the multipath of wireless channel, The reasons such as delay make the cross correlation between each subscriber signal undesirable, and the signal of other users produces active user's signal Raw interference, this kind of interference are referred to as multi-access inference MAI.In this way, when user's number increases in cell or other user powers mention The interference to active user can all be increased when rising, the received signal quality of active user is caused to decline, when this kind of interference is greatly to one When determining degree, active user cannot normal communication, therefore cdma system is a serious interference limiting system, interference Size directly influences power system capacity.
Power control techniques can be with effective solution this problem, it can adjust the transmission power of each user, compensation letter Near-far interference is offset in road decline, is maintained each user and is able to maintain in the minimum standard of normal communication, thus can be maximally The interference to other users is reduced, to improve power system capacity.
Cdma system uses close-loop power control, including inner-loop power control and open sea wharf two parts more at present, As shown in Figure 1.Wherein, open sea wharf is based on type of service and CRC（Cyclic Redundancy Check is recycled superfluous Remaining verification）Check results or the bit error rate/Block Error Rate BER/BLER adjust the sir target value that can guarantee QoS；Inner-loop power control Transmission power is adjusted according to the difference of SIR measured value and sir target value request transmitting terminal, when sir measurement value is less than or equal to When sir target value, TPC sends UP command " 1 "；Otherwise TPC sends down command " 0 ".
When transmitter is in feeble field, transmitter cannot make link-quality reach desired value due to power limited.It is outer at this time Ring power control constantly increases sir target value, and this phenomenon is known as wind up effects.In this case, SIR mesh Scale value may reach maximum value, and when link-quality restores normal, needing to take a long time could be by sir target value It is reduced to normal value.During this period of time, it will lead to transmitter transmission power higher than practically necessary value, thus to other use Cause biggish interference in family.So wind up effects detection algorithm is needed to fight sir target value caused by power limited not Disconnected the phenomenon that increasing.
As shown in Figure 1, inner-loop power control is controlled by external circule power control, it may be said that the effect of closed-loop power control is heavily dependent on The accuracy of external circule power control.Typical external circule power control algorithm is broadly divided into two major classes：Based on the BLER algorithm counted and it is based on The algorithm of CRC check.The algorithm based on CRC check is used at present, mainly point three steps：
1）As a result, then counting M/BLERtarget nearest check results, output BLER's one CRC check of every return unites Evaluation（In the case of the CRC check result in M/BLERtarget-1 initial statistic window is less than M/BLERtarget, 0 is filled when processing forward；Wherein, M is the long factor of statistic window）；
2）Step-length is lowered according to the upper reconciliation of the statistical value adjustment sir target value of 0 BLER；
3）Step-length is lowered according to the upper reconciliation of CRC check result and 0 and adjusts sir target value, specially：1- is according to up-regulation Step-length raises sir target value；0- lowers sir target value according to step-length is lowered；
Due to power limited under wind up state, BLERtarget cannot be satisfied.According to actual characteristic, into wind BLER has the process gradually increased when up state, and BLER has the mistake being gradually reduced when jumping out wind up state Journey, so carry out the entrance of detection wind up state currently based on this feature and jump out, it is specific as follows：
Wind up enters：If BLER is continuously enlarged（BLER is not allowed to lower）Number be more than or equal to pre- wind up shape State thresholding InThpre（It is at present 4）, then enter pre- wind up state；Continue to count BLER increase after pre- wind up state（Permit Perhaps BLER is lowered）Number：If the number that BLER increases is more than or equal to wind up status threshold InTh（It is at present 10）And And wherein BLER reduces number less than or equal to InThDn（It is at present 4）, then enter wind up state, otherwise keep non-wind up State；
Wind up is jumped out:If BLER is continuously reduced（BLER is not allowed to lower）Number is greater than or equal to non-wind up shape State thresholding OutTh（It is at present 4）And BLER/BLERtarget is less than or equal to OutThBLER（It is at present 2）, then enter non- Otherwise wind up state keeps wind up state.
However, in art methods implementation process, when power limited is not serious, BLER when into wind up state The feature continuously enlarged is unobvious, and scheme is easy to cause missing inspection at present；Equally, BLER is continuously reduced when jumping out wind up state Feature it is unobvious, at present scheme be easy to cause leakage jump；Missing inspection will lead to the continuous increase of sir target value, and leakage is jumped and then be will affect Normal power control.Simultaneously as the variation of BLER be based on CRC check as a result, variation it is slower, cause detect wind up shape It the entrance of state and jumps out and needs the long period, i.e., the wind up state detection delay that current scheme will lead to is longer；It is delayed longer Detection will lead to sir target value constantly increase or keep sir target value constant and influence normal power control.
Summary of the invention
The purpose of the present invention is to provide the regulation method of SIR and terminal device in a kind of external circule power control, so that wind The judgement of up state is more accurate quick, and when restoring normal from wind up state so as to avoid link, sir target value is excessively high Caused transmitting terminal transmission power is higher than practically necessary value, so that the problem of causing larger interference to other users, increases The strong robustness of current OLPC algorithm.
In order to solve the above technical problems, the present invention provides the regulation method of SIR in a kind of external circule power control, comprising with Lower step：
The block error rate BLER that receiving end real-time monitoring is counted according to cyclic redundancy check (CRC) result, statistics are preset recently WTPCA transmitting power control TPC control command；Wherein, WTPCFor the natural number greater than 1；
BLER the and TPC control command monitored according to receiving end judge transmitting terminal currently whether in transmission power by Limit wind up state；
If transmitting terminal is currently at wind up state, receiving end forbids being adjusted signal interference ratio sir target value； If transmitting terminal is currently at non-wind up state, receiving end adjusts sir target value according to CRC result.
The present invention also provides a kind of terminal devices, include：
BLER statistical module, for according to cyclic redundancy check (CRC) result statistics of error rate BLER；
TPC statistical module, for counting nearest preset WTPCA TPC control command；
Monitoring modular, the TPC control of the BLER and TPC statistical module counts for real-time monitoring BLER statistical module counts System order；
Wind up condition judgment module, BLER the and TPC control command for being arrived according to monitoring module monitors judge hair It is current whether in the limited wind up state of transmission power to penetrate end；
Sir target value adjusts module, for determining that transmitting terminal is in wind up state when wind up state determination module When, forbid being adjusted sir target value；When wind up state determination module determines that transmitting terminal is in non-wind up state When, sir target value is adjusted according to CRC result.
Embodiment of the present invention in terms of existing technologies, has increased TPC conduct newly and has judged whether transmitting terminal is in wind The foundation of up state, and in the prior art, the entrance of wind up state is judged according only to the variation tendency of BLER or is jumped out. But when power limited is not serious, into or when jumping out wind up state BLER variation tendency it is unobvious, be easy to cause leakage Inspection, and at the same time, when entering or jumping out wind up state, TPC command can be according to sir target value and sir measurement value Compare the variation tendency to change, compared to BLER, the variation of TPC is more accurate, simultaneously as the variation of BLER is based on CRC Check results, and the variation of TPC is changed based on SIR, it is clear that the generation period of TPC is shorter, so can be faster more quasi- in conjunction with TPC It really detects the entrance of wind up state and jumps out.Moreover, working as link by the quick and precisely judgement to wind up state When into wind up state, no longer change sir target value, when avoiding link and restoring normal from wind up state, sir target It is worth excessively high caused transmitting terminal transmission power and is higher than practically necessary value, to causes larger interference to ask other users Topic；When link jumps out wind up state, SIR target value adjusted according to normal power control in time, improve link Service efficiency enhances the robustness of current OLPC algorithm.
As a further improvement, judging that transmitting terminal is current in BLER the and TPC control command monitored according to receiving end It include following sub-step in the step of whether being limited wind up state in transmission power：
If receiving end monitors that BLER is greater than or equal to InThBLER, and in TPC control command UP command number More than or equal to InThTPC, then determine that transmitting terminal is currently at transmission power and is limited wind up state；Wherein, InThBLERIt is pre- The BLER set enters thresholding, InThTPCEnter thresholding for preset TPC；
If receiving end monitors that the number that BLER is continuously reduced is greater than or equal to OutThBLER, and TPC control command The number of middle down command is greater than or equal to OutThTPC, then determine that transmitting terminal is in non-wind up state；Wherein, OutThBLERThresholding, OutTh are jumped out for preset BLERTPCThresholding is jumped out for preset TPC.
Present inventor has further discovered that following feature：When entering wind up state, since transmission power cannot It is satisfied, the probability of CRC decoding error increases, and causes BLER to be gradually increased, while sir target value accordingly raises, but due to this When transmission power it is limited, sir measurement value is accordingly relatively low, so inner ring is less than or equal to sir target value according to sir measurement value, constantly Send TPC UP command, it is seen that the number ratio of UP command will will increase in TPC command at this time；When one section of power limited Between after, BLER value is then stable in the corresponding BLER value of limited power state（The value is greater than BLERtarget）.When jumping out wind up When state, since transmission power is unrestricted, power up-regulation, CRC decodes correct probability and increases, and BLER is gradually reduced, simultaneously Sir measurement value increases accordingly, and inner ring is greater than sir target value according to sir measurement value, constantly sends TPC down command, it is seen that at this time The number ratio of down command will will increase in TPC command；After limited cancellation a period of time, BLER stablizes in BLERtarget, together When TPC UP command and down command ratio it is suitable.
So inventor be based on the above feature, judge enter wind up state when, using BLER occurrence as judge according to One of according to, though it is utilized simultaneously it is possible to prevente effectively from BLER is missed when ascendant trend is unobvious into wind up state TPC UP command or down command ratio can accelerate to judge the period as one of judgment basis, also, by the judgement of the two according to According to further quantization, the speed and accuracy of wind up state judgement can effectively improve.
As a further improvement, receiving end was forbidden in the step of being adjusted to sir target value under wind up state, Sir target value is under the last non-wind up state, and BLER is target Block Error Rate BLERtargetWhen obtained sir target Value.
When into wind up state, to avoid sir target value from constantly increasing, then forbid adjusting sir target value, and It the use of BLER is target Block Error Rate BLERtargetWhen obtained sir target value, which is the stationary value under normal condition, while interior Ring can carry out power control according to this believable sir target value.
As a further improvement, the step being adjusted to signal interference ratio sir target value is forbidden in receiving end under wind up state In rapid, sir target value is the last W that BLER is obtained in preset section under the last non-wind up stateSIRA SIR The average value of target value；Wherein, preset section includes BLERtarget, WSIRFor the natural number greater than 1.According to the calculating side of BLER Method is it is found that when BLER is target Block Error Rate BLERtargetWhen, obtained sir target value may be different, and value can exist small size Fluctuation, to keep sir target value more accurate credible, the present invention is using to BLER obtained nearest W within an acceptable rangeSIR A sir target value is averaged.
As a further improvement, the lower limit in preset section is 0.7BLERtarget, upper limit 1.3BLERtarget.Furtherly The specific section of bright BLER tolerance interval is in BLERtargetUp and down between 30%.
As a further improvement, in the following manner according to CRC result statistics of error rate BLER：
After each the cyclic redundancy check (CRC) result for obtaining receiving data, according to the N CRC result obtained recently Count BLER；
Wherein, the value of N is by the long factor M of preset statistic window and BLERtargetIt determines.
BLER is calculated by CRC resulttargetValue, so that BLERtargetValue obtains more acurrate.
Detailed description of the invention
Fig. 1 is according to close-loop power control schematic diagram in the prior art；
Fig. 2 is the regulation method of SIR flow chart in the external circule power control of first embodiment according to the present invention；
Fig. 3 is the regulation method of SIR flow chart in the external circule power control of second embodiment according to the present invention；
Fig. 4 is the terminal device structural schematic diagram of third embodiment according to the present invention；
Fig. 5 is the terminal device structural schematic diagram of the 4th embodiment according to the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to each reality of the invention The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the present invention, In order to make the reader understand this application better, many technical details are proposed.But even if without these technical details and base In the various changes and modifications of following embodiment, each claim of the application technical side claimed also may be implemented Case.
The first embodiment of the present invention is related to the regulation method of SIR in a kind of external circule power control, comprise the steps of, As shown in Figure 2：
Step 201, statistics TPC control command raises number Wup, then execute step 202.Specifically, TPC command is logical Sliding window is crossed to count, if setting WTPCLong for statistic window, this step statistics is nearest WTPCW in a TPCup, such as this reality The statistic window length for applying mode can be using 180.Furtherly, the W obtained is counted by TPC sliding windowupIt may determine that TPC's is upper Tune ratio.
There is also the need to explanations, when using TPC sliding window for the first time, can insert initial value, this implementation to sliding window The fill method of mode is alternately to fill N nearest in UP command and down commandTPCIt is a, wherein NTPCActually refer to primary outer Inner ring number in ring, when different business, NTPCMay be different, but when the same business of execution, NTPCFor fixed value.For example For, in speech communication business, there are 30 inner ring in 1 outer ring while, then present embodiment is calculated applied to transmitting voice signal When method, NTPCValue is 30.
Step 202, BLER in counting statistics window then executes step 203.It is, receiving end monitoring is according to nearest N The block error rate BLER of a CRC result statistics.Specifically, BLER statistical value is using tune sir target value adjustment in present embodiment The BLER statistical value of step-length often obtains a CRC and counts as a result, then counting nearest N number of CRC check as a result, exporting BLER Value.Wherein, the value of N is by the long factor M of preset statistic window and target Block Error Rate BLERtargetIt determines, such as N=M/BLERtarget。 In the present embodiment, if initial M/BLERtargetCRC check result in -1 statistic window is less than M/BLERtargetIt is a The case where, when processing, fills forward 0.
It should be noted that although above-mentioned steps 201 and step 202 have sequencing when illustrating, in fact due to Computerized algorithm almost synchronizes in fact, so step 201 and step 202 can be exchanged arbitrarily, it is only necessary to which step 1 and step 2 are equal Step 203 is entered back into after the completion of executing, all will not influence present embodiment needs purpose to be achieved.
Step 203, judge whether BLER is equal to BLERtarget, if so, thening follow the steps 204；If it is not, thening follow the steps 205。
Step 204, sir target value is recorded, step 205 is then executed.Step 203 and step 204 are completed record jointly and are worked as Sir target value when BLER is BLER target value.The value will be used after transmitting terminal is judged into wind up state.? That is when BLER is not BLERtargetWhen, SIR target value may be too high or too low, does not make storage and uses.
Step 205, if meeting BLER >=InThBLERAnd Wup >=InThTPC, 207 are thened follow the steps, step is otherwise executed Rapid 206.The step is to judge whether transmitting terminal enters the core of wind up state, wherein InThBLERFor preset BLER into Enter thresholding, InThTPCEnter thresholding, InTh for preset TPCBLERWith InThTPCSpecific value can obtain based on experience value, It can also be acquired according to the simulation result carried out to wind up state and non-wind up state.It is adopted in present embodiment Use InThBLERFor 3*BLERtarget, TPC sliding window a length of 180, InThTPCIt is 103；That is, if meet BLER >= 3*BLERtargetAnd Wup >=103 then judge that transmitting terminal enters wind up state, step 207 are executed, if conditions are not met, then Judge that transmitting terminal still in non-wind up state, continues to execute step 206.
Step 206, BLER and TPC statistic window is slided, step 207 is then executed.That is, sliding BLER with step-length 1 Statistic window, with step-length NTPCTPC statistic window is slided, and returns and is transferred to step 201.
Step 207, N nearest in sliding statistic window is updatedTPCA TPC, and count TPC down command in TPC sliding window Number Wdw；CRC nearest in BLER statistic window is updated, step 208 is then executed.
Step 208, the BLER statistical value in sliding window is calculated, step 209 is then executed.
Step 209, according to formula（1.1）Refresh counter CntDn then executes step 210.
Wherein, set the initial value of CntDn as 0, BLER_Last be a preceding BLER value.That is, passing through counter CntDn records the number that BLER is continuously reduced, specifically, counter adds 1 when BLER reduces, when BLER is constant, Counter is constant, and when BLER becomes larger, counter is reset immediately, i.e. waiting subsequent step counts again.
Step 210, if counter CntDn value is more than or equal to decision threshold OutThBLERAnd WdwIt is more than or equal to OutThTPC, then follow the steps 201；It is no to then follow the steps 211.The step is to judge whether transmitting terminal enters wind up state Core, wherein OutThBLERThresholding, OutTh are jumped out for preset BLERTPCThresholding, OutTh are jumped out for preset TPCBLERWith OutThTPCSpecific value can obtain based on experience value, can also according to wind up state and non-wind up state into Capable simulation result acquires.OutTh is used in present embodimentBLERFor 4, TPC sliding window a length of 180, OutThTPCFor 67；That is, be greater than or equal to 4 times if meeting number that BLER continuously declines, and TPC down command number be greater than or Equal to 67, then judges that transmitting terminal enters non-wind up state, step 201 is executed, if conditions are not met, then judging that transmitting terminal is still located In wind up state, step 211 is continued to execute, while CntDn being reset.
Step 211, BLER statistic window is slided with step-length 1, with step-length NTPCTPC statistic window is slided, and returns and is transferred to step 207。
It should be noted that in the whole process, for convenience of description, being distinguished by the mark WindUpFlag of setting Two states：WindUpFlag=0 indicates that transmitting terminal is in non-wind up state；WindUpFlag=1 has indicated transmitting terminal Into wind up state.It is not difficult to find that in present embodiment, when step 201 to step 206, WindUpFlag=0, step 207 When to step 211, WindUpFlag=1；Meanwhile as WindUpFlag=0, verified according to the CRC based on BLER variable step As a result sir target value is adjusted；As WindUpFlag=1, sir target value is to meet BLERtargetSir target value SIRWindUp, The sir target value namely recorded in step 204.
Embodiment of the present invention in terms of existing technologies, has increased TPC conduct newly and has judged whether transmitting terminal is in wind The foundation of up state, and in the prior art, the entrance of wind up state is judged according only to the variation tendency of BLER or is jumped out. But when power limited is not serious, into or when jumping out wind up state BLER variation tendency it is unobvious, be easy to cause leakage Inspection, and at the same time, when entering or jumping out wind up state, TPC command can be according to sir target value and sir measurement value Compare the variation tendency to change, compared to BLER, the variation of TPC is more accurate, simultaneously as the variation of BLER is based on CRC Check results, and the variation of TPC is changed based on SIR, it is clear that the generation period of TPC is shorter, so can be faster more quasi- in conjunction with TPC It really detects the entrance of wind up state and jumps out.Moreover, working as link by the quick and precisely judgement to wind up state When into wind up state, no longer change sir target value, when avoiding link and restoring normal from wind up state, sir target It is worth excessively high caused transmitting terminal transmission power and is higher than practically necessary value, to causes larger interference to ask other users Topic；When link jumps out wind up state, SIR target value adjusted according to normal power control in time, improve link Service efficiency enhances the robustness of current OLPC algorithm.
Meanwhile transmitting terminal enters or meets following characteristics when jumping out wind up state：When entering wind up state, Since transmission power cannot be satisfied, the probability of CRC decoding error increases, and causes BLER to be gradually increased, while sir target value Corresponding up-regulation, but since transmission power at this time is limited, sir measurement value is accordingly relatively low, so inner ring is less than etc. according to sir measurement value In sir target value, TPC UP command is constantly sent, it is seen that the number ratio of UP command will will increase in TPC command at this time； When power limited for a period of time after, BLER value is then stable in the corresponding BLER value of limited power state（The value is greater than BLERtarget）.When jumping out wind up state, since transmission power is unrestricted, power up-regulation, CRC decodes correctly general Rate increases, and BLER is gradually reduced, while sir measurement value increases accordingly, and inner ring is greater than sir target value according to sir measurement value, constantly Send TPC down command, it is seen that the number ratio of down command will will increase in TPC order at this time；It is limited to cancel a period of time Afterwards, BLER stablizes in BLERtarget, while TPC UP command and down command ratio are suitable.
Present embodiment is also based on the above feature, judge enter wind up state when, using BLER occurrence as One of judgment basis, though it is possible to prevente effectively from BLER is missed when ascendant trend is unobvious into wind up state, together Shi Liyong TPC UP command or down command ratio can accelerate to judge the period as one of judgment basis, also, by the two Judgment basis further quantifies, and can effectively improve the speed and accuracy of wind up state judgement.
Second embodiment of the present invention also relates to the regulation method of SIR in a kind of external circule power control, present embodiment It is roughly the same with first embodiment（As shown in Figure 3）, the main distinction is step 303 and step 304 and first embodiment In step 203 and step 204 it is different.
Step 301 in present embodiment is similar to step 202 to the step 201 in first embodiment to step 302, Details are not described herein.
In present embodiment, step 303, judge whether BLER meets BLER >=0.7BLERtarget, and BLER≤ 1.3BLERtarget, if so, thening follow the steps 304；If it is not, thening follow the steps 305.
Step 304, the mean value of sir target value is recorded.That is, present embodiment be not only record when BLER= BLERtargetWhen that sir target value, but to several sir targets obtained when BLER meets a pre-set interval Value is averaged（Section in present embodiment uses 1.3BLERtarget≥BLER≥0.7BLERtarget）, by the average value It is denoted as SIRWindUpIt is used after transmitting terminal is judged into wind up state, that is, in subsequent step 307 to step It is used in 311, that is, is used as WindUpFlag=1.Specifically, the method being averaged in present embodiment It is the statistic window method of average, for example, the setting long W of statistic windowsirIt is 200, then is exactly to meet in range BLER to obtain most Nearly 200 sir target values are averaged；Here it should also be noted that for initial WsirSir target in -1 statistic window Value is less than WsirA situation, when processing, fill forward SIRini, those of ordinary skill in the art can be according to practical sets itself, this SIR in embodimentini=8dB.It also needs to illustrate, the value range of BLER is according to those of ordinary skill in the art It is found that when the value of BLER exceeds upper and lower 30% range, then it is assumed that BLER value at this time is unreliable, so, in present embodiment To obtain accurate believable sir value, it is necessary under the premise of believable BLER value.
According to the calculation method of BLER it is found that when BLER is target Block Error Rate BLERtargetWhen, obtained sir target value can Can be different, value can have fuctuation within a narrow range, and more accurate credible for the sir target value that makes, the present invention is using to BLER Obtained nearest W within an acceptable rangeSIRA sir target value is averaged.
In addition, the step 205 of step 305 in second embodiment into step 311 and first embodiment is to step 211 is similar, and details are not described herein.
It should be noted that above various methods the step of divide, be intended merely to describe clear, when realization can be merged into One step splits certain steps, is decomposed into multiple steps, as long as comprising identical logical relation, it is all special at this In the protection scope of benefit；To added in algorithm or in process it is inessential modification or introduce inessential design, but The core design of its algorithm and process is not changed all in the protection scope of the patent.
Third embodiment of the invention is related to a kind of terminal device, connection structure as shown in figure 4, comprising：
BLER statistical module, for according to cyclic redundancy check (CRC) result statistics of error rate BLER；
TPC statistical module, for counting nearest preset WTPCA TPC control command；
Monitoring modular, the TPC control of the BLER and TPC statistical module counts for real-time monitoring BLER statistical module counts System order；
Wind up condition judgment module, BLER the and TPC control command for being arrived according to monitoring module monitors judge hair It is current whether in the limited wind up state of transmission power to penetrate end；
Sir target value adjusts module, for determining that transmitting terminal is in wind up state when wind up state determination module When, forbid being adjusted sir target value；When wind up state determination module determines that transmitting terminal is in non-wind up state When, sir target value is adjusted according to CRC result.
It wherein, include following submodule in wind up condition judgment module：
Into wind up state decision sub-module：For when monitoring module monitors to BLER be greater than or equal to InThBLER, and the number of UP command is greater than or equal to InTh in TPC control commandTPC, then determine that transmitting terminal is in wind Up state；Wherein, InThBLEREnter thresholding, InTh for preset BLERTPCEnter thresholding for preset TPC；
Jump out wind up state decision sub-module：For when monitoring module monitors to the number that is continuously reduced of BLER it is big In or equal to OutThBLER, and the number of down command is greater than or equal to OutTh in TPC control commandTPC, then determine to emit End is in non-wind up state；Wherein, OutThBLERThresholding, OutTh are jumped out for preset BLERTPCIt is jumped out for preset TPC Thresholding.
In terms of existing technologies, the main distinction and effect are embodiment of the present invention：It is increased newly in present embodiment TPC statistical module counts TPC command, and judgment basis in wind up condition judgment module, which has also increased newly, orders TPC The judgement of order, and in the prior art, only for the BLER statistical module of statistics BLER, in wind up condition judgment module Only judged according to the variation of BLER, it is not serious in power limited in this way, when the variation tendency of BLER is not obvious, judgement Module is easy to appear missing inspection, and the generation period of the generation period ratio BLER of TPC is short, that is to say, that joint TPC and BLER Two parameters to whether link is in wind up state are judged that accuracy not only can be improved, moreover it is possible to accelerate detection judgement Speed.
Particularly, enter/jumped out in present embodiment wind up state decision sub-module using the occurrence of BLER as Judgment basis though BLER is effectively avoided to be missed when ascendant trend is unobvious into wind up state, while utilizing TPC UP command or down command ratio can accelerate to judge the period as one of judgment basis, also, by the judgment basis of the two Further quantization can effectively improve the speed and accuracy of wind up state judgement.
It should be noted that including the first acquisition submodule of sir target value in sir target value adjustment module, for obtaining Under the last non-wind up state, monitoring module monitors to BLER are target Block Error Rate BLERtargetWhen obtained SIR mesh Scale value.
It should be noted that also including BLER operation submodule in BLER statistical module, for obtaining receiving data After each cyclic redundancy check (CRC) result, according to the N number of CRC result operation BLER obtained recently；Wherein, the value of N by The long factor M of preset statistic window and target Block Error Rate BLERtargetIt determines.
It is not difficult to find that present embodiment is system embodiment corresponding with first embodiment, present embodiment can be with First embodiment is worked in coordination implementation.The relevant technical details mentioned in first embodiment still have in the present embodiment Effect, in order to reduce repetition, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in In first embodiment.
It is noted that each module involved in present embodiment is logic module, and in practical applications, one A logic unit can be a physical unit, be also possible to a part of a physical unit, can also be with multiple physics lists The combination of member is realized.In addition, in order to protrude innovative part of the invention, it will not be with solution institute of the present invention in present embodiment The technical issues of proposition, the less close unit of relationship introduced, but this does not indicate that there is no other single in present embodiment Member.
Four embodiment of the invention also relates to a kind of terminal device, and the 4th embodiment and third embodiment are basic It is identical（As shown in Figure 5）, the main distinction is：In the fourth embodiment, it is obtained in sir target value adjustment module comprising second Submodule, not comprising the first acquisition submodule in third embodiment, for obtaining in the last non-wind up state Under, last W that monitoring module monitors to BLER obtain in preset sectionSIRThe average value of a sir target value；Wherein, preset area Between include BLERtarget, WSIRFor the natural number greater than 1.Preset section is 1.3BLER in present embodimenttarget≥BLER≥ 0.7BLERtarget, according to the calculation method of BLER it is found that when BLER is target Block Error Rate BLERtargetWhen, obtained SIR mesh Scale value may be different, and value can have fuctuation within a narrow range, more accurate credible for the sir target value that makes, present invention use To BLER obtained nearest W within an acceptable rangeSIRA sir target value is averaged.It also needs to illustrate, The value range of BLER is according to those of ordinary skill in the art it is found that when the value of BLER exceeds upper and lower 30% range, then it is assumed that BLER value at this time is unreliable, so, accurate believable sir value is obtained in present embodiment, it is necessary in believable BLER Under the premise of value.
Since second embodiment is corresponded to each other with present embodiment, present embodiment can be mutual with second embodiment Match implementation.The relevant technical details mentioned in second embodiment are still effective in the present embodiment, implement second The attainable technical effect of institute similarly may be implemented in the present embodiment in mode, no longer superfluous here in order to reduce repetition It states.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in second embodiment.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention, And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.

Claims (9)

1. the regulation method of SIR in a kind of external circule power control, which is characterized in that comprise the steps of：
The block error rate BLER that receiving end real-time monitoring is counted according to cyclic redundancy check (CRC) result counts preset W recentlyTPCIt is a Transmitting power control TPC control command；Wherein, the WTPCFor the natural number greater than 1；
Whether the BLER and the TPC control command monitored according to the receiving end judges transmitting terminal currently in hair Penetrate power limited wind up state；
If the transmitting terminal is currently at wind up state, the receiving end forbids adjusting signal interference ratio sir target value It is whole；If the transmitting terminal is currently at non-wind up state, the receiving end adjusts sir target according to the CRC result Value；
Wherein, the BLER and the TPC control command monitored according to the receiving end judge transmitting terminal currently whether Wind up state, which is limited, in transmission power specifically includes following sub-step：If the receiving end monitors that the BLER is big In or equal to InThBLER, and the number of UP command is greater than or equal to InTh in the TPC control commandTPC, then determine to send out It penetrates end and is currently at the limited wind up state of transmission power；Wherein, the InThBLEREnter thresholding for preset BLER, it is described InThTPCEnter thresholding for preset TPC；
If the receiving end monitors that the number that the BLER is continuously reduced is greater than or equal to OutThBLER, and the TPC is controlled The number of down command is greater than or equal to OutTh in system orderTPC, then determine that the transmitting terminal is in non-wind up state；Its In, the OutThBLERThresholding, the OutTh are jumped out for preset BLERTPCThresholding is jumped out for preset TPC.
2. the regulation method of SIR in external circule power control according to claim 1, which is characterized in that described in wind up The receiving end was forbidden in the step of being adjusted to sir target value under state, and the sir target value is the last non- Under wind up state, the BLER is target Block Error Rate BLERtargetWhen obtained sir target value.
3. the regulation method of SIR in external circule power control according to claim 1, which is characterized in that described in wind up The receiving end was forbidden in the step of being adjusted to signal interference ratio sir target value under state, and the sir target value is nearest one Under secondary non-wind up state, last W that the BLER is obtained in preset sectionSIRThe average value of a sir target value；Wherein, The preset section includes the BLERtarget, the WSIRFor the natural number greater than 1.
4. the regulation method of SIR in external circule power control according to claim 3, which is characterized in that the preset section Lower limit is 0.7BLERtarget, upper limit 1.3BLERtarget。
5. the regulation method of SIR in external circule power control according to any one of claim 1 to 4, which is characterized in that logical Following manner is crossed according to CRC result statistics of error rate BLER：
After each the cyclic redundancy check (CRC) result for obtaining receiving data, counted according to the N number of CRC result obtained recently The BLER；
Wherein, the value of the N is by the long factor M of preset statistic window and the BLERtargetIt determines.
6. a kind of terminal device, which is characterized in that include：
BLER statistical module, for according to cyclic redundancy check (CRC) result statistics of error rate BLER；
TPC statistical module, for counting nearest preset WTPCA TPC control command；Wherein, the WTPCFor the nature greater than 1 Number；
Monitoring modular is united for the BLER of BLER statistical module counts described in real-time monitoring and the TPC statistical module The TPC control command of meter；
Wind up condition judgment module, the BLER and TPC control life for being arrived according to the monitoring module monitors Whether order judges transmitting terminal currently in the limited wind up state of transmission power；
Sir target value adjusts module, for determining that the transmitting terminal is in wind up when the wind up state determination module When state, forbid being adjusted sir target value；When the wind up state determination module determines that the transmitting terminal is in non- When wind up state, sir target value is adjusted according to CRC result；
It wherein, include following submodule in the wind up condition judgment module：
Into wind up state decision sub-module：For when the monitoring module monitors to the BLER be greater than or equal to InThBLER, and the number of UP command is greater than or equal to InTh in the TPC control commandTPC, then determine the transmitting terminal In wind up state；Wherein, the InThBLEREnter thresholding, the InTh for preset BLERTPCFor preset TPC into Enter thresholding；
Jump out wind up state decision sub-module：For when the monitoring module monitors to the BLER be continuously reduced time Number is greater than or equal to OutThBLER, and the number of down command is greater than or equal to OutTh in the TPC control commandTPC, then Determine that the transmitting terminal is in non-wind up state；Wherein, the OutThBLERThresholding is jumped out for preset BLER, it is described OutThTPCThresholding is jumped out for preset TPC.
7. terminal device according to claim 6, which is characterized in that include SIR mesh in the sir target value adjustment module The first acquisition submodule of scale value, for obtaining under the last non-wind up state, the monitoring module monitors are described in BLER is target Block Error Rate BLERtargetWhen obtained sir target value.
8. terminal device according to claim 6, which is characterized in that also include SIR in the sir target value adjustment module The second acquisition submodule of target value, for obtaining under the last non-wind up state, the monitoring module monitors are described in The last W that BLER is obtained in preset sectionSIRThe average value of a sir target value；Wherein, the preset section includes described BLERtarget, the WSIRFor the natural number greater than 1.
9. the terminal device according to any one of claim 6 to 8, which is characterized in that in the BLER statistical module also Comprising BLER operation submodule, for being obtained according to nearest after each the cyclic redundancy check (CRC) result for obtaining receiving data BLER described in the N number of CRC result operation arrived；
Wherein, the value of the N is by the long factor M of preset statistic window and target Block Error Rate BLERtargetIt determines.
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