CN102291809B - The method that ascending exterior ring power controls and device - Google Patents
The method that ascending exterior ring power controls and device Download PDFInfo
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- CN102291809B CN102291809B CN201010208927.6A CN201010208927A CN102291809B CN 102291809 B CN102291809 B CN 102291809B CN 201010208927 A CN201010208927 A CN 201010208927A CN 102291809 B CN102291809 B CN 102291809B
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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
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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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
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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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
- H04W52/262—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account adaptive modulation and coding [AMC] scheme
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Abstract
The invention discloses method and the device of the control of a kind of ascending exterior ring power.Said method comprises: the transmission state judging terminal; If terminal transmission is excessively stable, reduce the AMC thresholding of institute's terminal; If terminal transmission is unstable, raise the AMC thresholding of terminal.The invention solves the problem of the mode underaction of base station adjustment AMC threshold value, thus higher up modulation coding mode can be enabled with lower transmitting power.
Description
Technical field
The present invention relates to the communications field, particularly relate to method and the device of the control of a kind of ascending exterior ring power.
Background technology
Power controls (PowerControl is called for short PC) is one of key technology of physical layer in OFDM (OrthogonalFrequencyDivisionMultipleAccess is called for short OFDMA) system.PC is divided into uplink power control and downlink power control, descendingly mainly contain data power gain (DataBoosting), zone power gain (zoneboosting, zone is continuous print OFDMA symbol in upstream or downstream, adopts identical permutations mode at same zone lining channel); Uply mainly contain inner ring PC and outer shroud PC.
Inner ring PC is according to up AMC (AdoptiveModulationandCoding, i.e. Adaptive Modulation and Coding) up-link carrier of thresholding and terminal and interference-to-noise ratio (CarriertoInterferenceplusNoiseRatio is called for short CINR) adjust the transmitting power of terminal, object is make the up CINR value of terminal and transmitting power reach certain balance, makes transmission stable.Outer shroud PC adjusts up AMC threshold value according to the up CINR value of terminal and current up modulation coding mode.Make terminal select suitable up modulation coding mode, ensure that link is stablized.In practice, if terminal uplink AMC threshold value is reasonable, adjusted the transmitting power of terminal by inner ring PC, just can ensure that up modulation coding mode that terminal is selected is suitable and transmit to stablize.
For same set of AMC threshold value, be not necessarily applicable to all terminals, now can be adjusted the up AMC threshold value of concrete terminal by outer shroud.Realizing in process of the present invention, inventor recognizes in the ascending exterior ring power control mode of prior art to there is following technical problem: the mode underaction of base station adjustment AMC threshold value.
Summary of the invention
A kind of method that main purpose of the present invention is to provide ascending exterior ring power to control and device, to solve the problem of the mode underaction of above-mentioned base station adjustment AMC threshold value.
According to an aspect of the present invention, provide a kind of method method that ascending exterior ring power controls, comprising: the transmission state judging terminal; If terminal transmission is excessively stable, reduce the AMC thresholding of terminal; If terminal transmission is unstable, raise the AMC thresholding of terminal.
In the technical program, judge that the transmission state of terminal specifically comprises: preset the first adjustment thresholding and the second adjustment thresholding; When up Packet Error Ratio is lower than the first adjustment threshold value, think that terminal transmission is excessively stable; If up Packet Error Ratio is greater than the second adjustment threshold value, think that terminal transmission is unstable; The AMC thresholding reducing terminal specifically comprises: according to the adjustable range of PCCI in the permissible range presetting up rate of false alarm, reduce the AMC thresholding of terminal, PCCI is power control CINR reference value; Raise the AMC thresholding of terminal specifically to comprise: exit thresholding according to the history average of terminal CINR and terminal current rank acquiescence thresholding, raise the AMC thresholding of terminal.
Preferably, in the technical program, according to the adjustable range of PCCI in the permissible range presetting up rate of false alarm, the AMC thresholding reducing terminal specifically comprises: the PCCI reducing current rank, until up Packet Error Ratio is greater than the first termination threshold value, obtain the drop-out value of PCCI; If the drop-out value of PCCI is greater than higher order PCCI and current rank PCCI difference when giving tacit consent to thresholding, then the whole PCCI values giving tacit consent to thresholding deduct PCCI drop-out value, and keep current rank constant; The difference of higher order PCCI and current rank PCCI when if the drop-out value of PCCI is less than acquiescence thresholding, then the whole PCCI values giving tacit consent to thresholding deduct PCCI drop-out value, and adjust terminal and rise to higher order PCCI.
Preferably, in the technical program, reduce the power control CINR reference value PCCI on current rank, until up Packet Error Ratio is greater than the first termination threshold value, the drop-out value obtaining PCCI specifically comprises: the PCCI successively evenly reducing current rank according to default step-length; According to default step-length and the number of times reducing PCCI, obtain the drop-out value of PCCI.
In the technical program, thresholding is exited according to the history average of terminal CINR and terminal current rank acquiescence thresholding, raise the AMC thresholding of terminal specifically to comprise: exit thresholding according to the history average of terminal CINR and terminal current rank acquiescence thresholding, obtain the adjusted value of PCCI; When will give tacit consent to thresholding, the threshold value on whole rank increases the adjusted value of PCCI.
In the technical program, thresholding is exited according to the history average of terminal CINR and terminal current rank acquiescence thresholding, the adjusted value obtaining PCCI specifically comprises: the adjusted value=C-P+1 of PCCI, and wherein the history average of terminal CINR is C, and the thresholding that exits of terminal current rank acquiescence thresholding is P.
According to a further aspect in the invention, provide the device that a kind of ascending exterior ring power controls, comprising: judge module, for after inner loop power adjustment, judge the transmission state of terminal; First adaptation module, if excessively stable for terminal transmission, reduces the AMC thresholding of terminal; Second adaptation module, if unstable for terminal transmission, raises the AMC thresholding of terminal.
Preferably, in the technical program, judge module, specifically for presetting the first adjustment thresholding and the second adjustment thresholding; When up Packet Error Ratio is lower than the first adjustment threshold value, think that terminal transmission is excessively stable; If up Packet Error Ratio is greater than the second adjustment threshold value, think that terminal transmission is unstable; First adaptation module, specifically for the adjustable range according to PCCI in the permissible range presetting up rate of false alarm, reduces the AMC thresholding of terminal; Second adaptation module, specifically for exiting thresholding according to the history average of terminal CINR and terminal current rank acquiescence thresholding, raises the AMC thresholding of terminal.
Preferably, in the technical program, the first adaptation module specifically comprises: PCCI adjusts submodule, for reducing the power control CINR reference value PCCI on current rank, until up Packet Error Ratio is greater than the first termination threshold value, obtains the drop-out value of PCCI; Self adaptation reduces submodule, if higher order PCCI and current rank PCCI difference when being greater than acquiescence thresholding for the drop-out value of PCCI, then the whole PCCI values giving tacit consent to thresholding deduct PCCI drop-out value, and keep current rank constant; The difference of higher order PCCI and current rank PCCI when if the drop-out value of PCCI is less than acquiescence thresholding, then the whole PCCI values giving tacit consent to thresholding deduct PCCI drop-out value, and adjust terminal and rise to higher order PCCI.
Preferably, in the technical program, PCCI adjusts submodule, is greater than the first termination thresholding specifically for the PCCI successively evenly reducing current rank according to default step-length to up Packet Error Ratio; According to default step-length and the number of times reducing PCCI, obtain the drop-out value of PCCI.
Preferably, in the technical program, the second adaptation module specifically comprises: AMC adjusts submodule, for exiting thresholding according to the history average of terminal CINR and terminal current rank acquiescence thresholding, obtains the adjusted value of PCCI; Self adaptation raises submodule, and during for giving tacit consent to thresholding, the threshold value on whole rank increases the adjusted value of PCCI.
Preferably, in the technical program, AMC adjusts submodule, if be greater than the second adjustment threshold value specifically for up Packet Error Ratio, obtain the adjusted value=C-P+1 of PCCI, wherein the history average of terminal CINR is C, and the thresholding that exits of terminal current rank acquiescence thresholding is P.
Whether the present invention adopts transmits stable according to terminal, judge whether to need to carry out self-adaptative adjustment to AMC threshold value, thus solve the problem of the mode underaction of base station adjustment AMC threshold value, thus higher up modulation coding mode can be enabled with lower transmitting power.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the inventive method embodiment one method for controlling up link external ring power;
Fig. 2 is the general flow chart according to threshold adaptive adjustment in the inventive method embodiment three method for controlling up link external ring power;
Fig. 3 is the flow chart according to threshold adaptive decline judgement in the inventive method embodiment three method for controlling up link external ring power;
Fig. 4 is the flow chart according to threshold adaptive rising judgement in the inventive method embodiment three method for controlling up link external ring power;
Fig. 5 is the schematic diagram according to apparatus of the present invention embodiment one ascending exterior ring power control device.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
The object of the invention is to terminal and adjust up AMC threshold value according to residing environment self-adaption, make terminal under the prerequisite keeping link stable, enable higher up modulation coding mode with lower transmitting power.
Embodiment of the method one:
Fig. 1 is the flow chart according to the inventive method embodiment one method for controlling up link external ring power.As shown in Figure 1, the present embodiment comprises:
Step S102, after inner loop power adjustment, judges the transmission state of terminal, if be transmitted across stable, performs step S104, if transmission is unstable, performs step S106;
Step S104, reduces the AMC thresholding of terminal;
Step S106, raises the AMC thresholding of terminal.
In the present embodiment, step S102 judges that the transmission state of terminal can take following method: preset the first adjustment thresholding and the second adjustment thresholding; When up Packet Error Ratio is lower than the first adjustment threshold value, think that terminal transmission is excessively stable; If up Packet Error Ratio is greater than default second adjustment threshold value, think that terminal can not stable transfer.In the present embodiment, the first adjustment threshold value and described first termination threshold value are the preset value according to actual scene.First adjustment thresholding is less than the second adjustment thresholding.When up Packet Error Ratio is between the first adjustment thresholding and the second adjustment thresholding, not thinks and need to adjust the AMC thresholding of terminal.
In the present embodiment, in step S104, the AMC thresholding reducing terminal is specially: according in the permissible range presetting up rate of false alarm, PCCI (PCCINRReference, i.e. power control CINR reference value) adjustable range, reduce the AMC thresholding of terminal.In step S106, raise the AMC thresholding of terminal and be specially: exit thresholding according to the history average of terminal CINR and terminal current rank acquiescence thresholding, raise the AMC thresholding of terminal.Wherein, PCCI is exactly the optimal demodulation threshold value under up various modulation coding mode, if such as QPSK1/2CTC has a PCCI value for 12dB, if up CINR value is greater than 12dB, then think to the few of lifting of performance, waste the transmitting power of terminal on the contrary, lower than 12dB, then performance is had a certain impact, but be can system tolerant in certain limit near 12dB, ordinary circumstance, modulation coding mode is higher, and corresponding PCCI value is larger.
In the present embodiment, above-mentioned steps completes by base station, can under the prerequisite making terminal keep link stable, adjustment AMC threshold value flexibly, thus can enable higher up modulation coding mode with lower transmitting power.
Embodiment of the method two:
The present embodiment, by the basis of embodiment one, illustrates each step of method for controlling up link external ring power.
When inner loop power adjustment is complete, if terminal transmission is excessively stable, then enters AMC threshold adaptive and reduce flow process; If terminal transmission is unstable, then enters AMC threshold adaptive and raise flow process.
AMC threshold adaptive reduces flow process: when inner ring PC adjustment is complete, terminal transmission is excessively stable, namely up Packet Error Ratio is lower than threshold value N%, then reduce the PCCI on current rank gradually, AMC is not adjusted, until up Packet Error Ratio is greater than threshold value M%, if the value that PCCI declines is greater than higher order PCCI and current PCC I difference when giving tacit consent to thresholding in PCCI reduction process, the PCCI primary system one then giving tacit consent to thresholding deducts PCCI drop-out value, and keeps current rank constant; If the value that PCCI declines is less than the difference of higher order PCCI and current PCC I when giving tacit consent to thresholding, then the PCCI primary system one giving tacit consent to thresholding deducts PCCI drop-out value, and adjusts in terminal to higher order.
AMC threshold adaptive raises flow process: when up Packet Error Ratio is greater than threshold value N2%, suppose that present terminal CINR is C, the current thresholding that exits is P, and show that PCCI adjusted value is for (C-P+1), adjusted value all comes into force to all thresholdings.
The present embodiment is the specific descriptions of embodiment of the method one correlation step, has whole beneficial effects of above-described embodiment, no longer repeats herein.
Embodiment of the method three:
The present embodiment by the basis of embodiment two, to terminal steady transmission judgement; Self adaptation raises flow process, and self adaptation reduces flow process and is described in detail.For ease of understanding, wherein each parameter being defined, and composes initial value.
Supposing that threshold adaptive reduces the Packet Error Ratio threshold value of flow startup is N1%, threshold adaptive raises the Packet Error Ratio threshold value N2% of flow startup, in threshold adaptive reduction process, each drop-out value of PCCI is d, the Packet Error Ratio threshold value that the threshold adaptive PCCI reduced in flow process terminates when declining is M%, the decline number of times that in threshold adaptive decline flow process, PCCI is total is n time, the PCCI value of higher order during thresholding is given tacit consent to for P2 in threshold adaptive decline flow process, the PCCI value on current rank is P1, the CINR value that threshold adaptive raises present terminal in flow process is C, the release threshold value that threshold adaptive raises current rank in flow process is P.
Fig. 2 is the general flow chart according to threshold adaptive adjustment in the inventive method embodiment three method for controlling up link external ring power.As shown in Figure 2, this flow process comprises:
Step S202: whether uplink external ring PC is enable, is, enters step S204, otherwise enters step S214;
Step S204: whether up inner ring PC adjustment terminates, and is enter step S206, otherwise enters step S214;
Step S206: whether up Packet Error Ratio lower than threshold value N1%, is, enters step S210, otherwise enters step S208;
Step S208: whether up Packet Error Ratio is greater than threshold value N2%, is, then enter step S212, otherwise enters step S214;
Step S210: carry out up AMC threshold adaptive decline decision process, enter step S214;
Step S212: carry out up AMC threshold adaptive rising decision process;
Step S214: terminate.
Fig. 3 is the flow chart according to threshold adaptive decline judgement in the inventive method embodiment three method for controlling up link external ring power.As shown in Figure 3, this flow process comprises:
Step S302: whether uplink external ring PC is enable, is, enters step S304, otherwise enters step S328;
Step S304: it is complete whether up inner ring PC adjusts, and is, enters step S306, otherwise enter step S328;
Step S306: carry out up Packet Error Ratio statistics;
Step S308: whether up Packet Error Ratio, lower than thresholding N1%, is enter step S310, otherwise enters step S328;
Step S310: current up modulation coding mode is not most high-order, is not that most high-order then enters step S312, otherwise enters step S328;
Step S312: keep current upper Row sum-equal matrix coded system constant.
Step S314: the PCCI value on current rank subtracts d;
Step S316: decline frequency n adds 1;
Step S318: whether up Packet Error Ratio is greater than threshold value M%, is, enters step S320, otherwise enters step S314;
Step S320: the PCCI value on current rank adds d, and decline number of times subtracts 1;
Step S322: when judging to give tacit consent to thresholding, whether the upper PCCI value P2 of single order and the difference of current rank PCCI value P1 are greater than PCCI drop-out value, and namely (P2-P1) > n*d, is enter step S324, otherwise enters step S326;
Step S324: PCCI value during all acquiescence thresholdings subtracts (n*d), up modulation coding mode raises single order, enters step S328;
Step S326: PCCI value during all acquiescence thresholdings subtracts (n*d), keeps current modulation coding mode constant;
Step S328: terminate.
Fig. 4 is the flow chart according to threshold adaptive rising judgement in the inventive method embodiment three method for controlling up link external ring power.As shown in Figure 4, this flow process comprises:
Step S402: whether uplink external ring PC is enable, enable, enters step S404, otherwise enters step S416;
Step S404: it is complete whether up inner ring PC adjusts, adjusts complete, enters step S406, otherwise enter step S416;
Step S406: carry out up Packet Error Ratio statistics;
Step S408: whether up Packet Error Ratio is greater than threshold value N2%, is, enters step S410, otherwise enters step S416;
Step S410: calculate CINR average according to the history CINR value that terminal is preserved, obtain average C;
Step S412: calculate PCCI adjusted value (release threshold value time wherein P is current rank acquiescence thresholding) according to formula (C-P+1);
Step S414: during acquiescence thresholding, the threshold value on all rank adds PCCI adjusted value;
Step S416: terminate.
The present embodiment is the specific descriptions of embodiment of the method one, two correlation step, has whole beneficial effects of above-described embodiment, no longer repeats herein.
Device embodiment one:
Fig. 5 is the schematic diagram according to apparatus of the present invention embodiment one ascending exterior ring power control device.As shown in Figure 5, ascending exterior ring power control device is positioned at base station, comprising: judge module 502, is connected with the second adaptation module 506 with the first adaptation module 504, for after inner loop power adjustment, judges whether terminal is transmitted stable; First adaptation module 504, if excessively stable for terminal transmission, reduces the AMC thresholding of terminal; Second adaptation module 506, if unstable for terminal transmission, raises the AMC thresholding of terminal.Base station adjusts the AMC thresholding after adjustment.
The method that the present embodiment realizes can the related description of reference method embodiment, and has whole beneficial effects of above-described embodiment, no longer repeats herein.
Device embodiment two:
The present embodiment is described in detail to each functional module in device embodiment one.
In the present embodiment, judge module, if specifically for up Packet Error Ratio lower than the first adjustment threshold value, judge that terminal transmission is excessively stable; If up Packet Error Ratio is greater than the second adjustment threshold value, judge that terminal transmission is unstable.
In the present embodiment, the first adaptation module specifically comprises: PCCI adjusts submodule, for reducing the power control CINR reference value PCCI on current rank, until up Packet Error Ratio is greater than the first termination threshold value, obtains the drop-out value of PCCI; Adapt to reduce submodule, if higher order PCCI and current rank PCCI difference when being greater than acquiescence thresholding for the drop-out value of PCCI, then the whole PCCI values giving tacit consent to thresholding deduct PCCI drop-out value, and keep current rank constant; The difference of higher order PCCI and current rank PCCI when if the drop-out value of PCCI is less than acquiescence thresholding, then the whole PCCI values giving tacit consent to thresholding deduct PCCI drop-out value, and adjust terminal and rise to higher order PCCI.Wherein, PCCI adjusts submodule, is greater than the first termination thresholding specifically for the PCCI successively evenly reducing current rank according to default step-length to up Packet Error Ratio; According to default step-length and the number of times reducing PCCI, obtain the drop-out value of PCCI.
In the present embodiment, the second adaptation module specifically comprises: AMC adjusts submodule, for exiting thresholding according to the history average of terminal CINR and terminal current rank acquiescence thresholding, obtains the adjusted value of PCCI; Self adaptation raises submodule, and during for giving tacit consent to thresholding, the threshold value on whole rank increases the adjusted value of PCCI.Wherein, AMC adjusts submodule, if be greater than the second adjustment threshold value specifically for up Packet Error Ratio, obtain the adjusted value=C-P+1 of PCCI, wherein the history average of terminal CINR is C, and the thresholding that exits of terminal current rank acquiescence thresholding is P.
The method that the present embodiment realizes can the related description of reference method embodiment two, three.Present embodiments provide a kind of ascending exterior ring power control device based on Packet Error Ratio, for up AMC threshold adaptive method of adjustment.When terminal upload stable and be not at most high-order time automatically reduce AMC thresholding, if terminal is uploaded instability and is not automatically raise AMC thresholding when lowest-order.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a method for ascending exterior ring power control, is characterized in that, after inner loop power adjustment, comprising:
Judge the transmission state of terminal;
If described terminal transmission is excessively stable, reduce the Adaptive Modulation and Coding AMC thresholding of described terminal; If described terminal transmission is unstable, raise the AMC thresholding of described terminal.
2. method according to claim 1, is characterized in that,
The transmission state of described judgement terminal comprises: preset the first adjustment thresholding and the second adjustment thresholding; When up Packet Error Ratio is lower than described first adjustment threshold value, think that described terminal transmission is excessively stable; If described up Packet Error Ratio is greater than described second adjustment threshold value, think that described terminal transmission is unstable;
The AMC thresholding of described reduction terminal comprises: according to the adjustable range of PCCI in the permissible range presetting up rate of false alarm, reduce the AMC thresholding of described terminal, described PCCI is power control CINR reference value;
The AMC thresholding of described rising terminal comprises: exit thresholding according to the history average of described terminal CINR and terminal current rank acquiescence thresholding, raises the AMC thresholding of described terminal.
3. method according to claim 2, is characterized in that, the adjustable range of described basis PCCI in the permissible range presetting up rate of false alarm, and the AMC thresholding reducing terminal comprises:
Reduce the PCCI on current rank, until described up Packet Error Ratio is greater than described first stop threshold value, obtain the drop-out value of described PCCI;
If the drop-out value of described PCCI is greater than higher order PCCI and current rank PCCI difference when giving tacit consent to thresholding, then the whole PCCI values giving tacit consent to thresholding deduct PCCI drop-out value, and keep current rank constant;
The difference of higher order PCCI and current rank PCCI when if the drop-out value of described PCCI is less than acquiescence thresholding, then the whole PCCI values giving tacit consent to thresholding deduct PCCI drop-out value, and adjust terminal and rise to higher order PCCI.
4. method according to claim 3, is characterized in that, the power control CINR reference value PCCI on the current rank of described reduction, until up Packet Error Ratio is greater than the first termination threshold value, the drop-out value obtaining PCCI comprises:
The PCCI on described current rank is successively evenly reduced according to default step-length;
According to the number of times of described default step-length and described reduction PCCI, obtain the drop-out value of described PCCI.
5. method according to claim 2, is characterized in that, the described history average according to terminal CINR and terminal current rank acquiescence thresholding exit thresholding, the AMC thresholding raising terminal comprises:
Exit thresholding according to the history average of described terminal CINR and described terminal current rank acquiescence thresholding, obtain the adjusted value of PCCI;
When will give tacit consent to thresholding, the threshold value on whole rank increases the adjusted value of described PCCI.
6. method according to claim 5, is characterized in that, the described history average according to terminal CINR and terminal current rank acquiescence thresholding exit thresholding, the adjusted value obtaining PCCI comprises:
The history average of the adjusted value=C-P+1 of PCCI, wherein said terminal CINR is C, and the thresholding that exits of described terminal current rank acquiescence thresholding is P.
7. a device for ascending exterior ring power control, is characterized in that, be positioned at base station, comprising:
Judge module, for after inner loop power adjustment, judges the transmission state of terminal;
First adaptation module, if excessively stable for terminal transmission, reduces the AMC thresholding of described terminal;
Second adaptation module, if unstable for described terminal transmission, raises the Adaptive Modulation and Coding AMC thresholding of described terminal.
8. device according to claim 7, is characterized in that,
Described judge module, for presetting the first adjustment thresholding and the second adjustment thresholding; When up Packet Error Ratio is lower than described first adjustment threshold value, think that described terminal transmission is excessively stable; If described up Packet Error Ratio is greater than described second adjustment threshold value, think that described terminal transmission is unstable;
Described first adaptation module, for the adjustable range according to PCCI in the permissible range presetting up rate of false alarm, reduces the AMC thresholding of described terminal;
Described second adaptation module, for exiting thresholding according to the history average of described terminal CINR and terminal current rank acquiescence thresholding, raises the AMC thresholding of described terminal.
9. device according to claim 8, is characterized in that, described first adaptation module comprises:
PCCI adjusts submodule, for reducing the power control CINR reference value PCCI on current rank, until described up Packet Error Ratio is greater than the first termination threshold value, obtains the drop-out value of described PCCI;
Self adaptation reduces submodule, if higher order PCCI and current rank PCCI difference when being greater than acquiescence thresholding for the drop-out value of described PCCI, then the whole PCCI values giving tacit consent to thresholding deduct PCCI drop-out value, and keep current rank constant; The difference of higher order PCCI and current rank PCCI when if the drop-out value of described PCCI is less than acquiescence thresholding, then the whole PCCI values giving tacit consent to thresholding deduct PCCI drop-out value, and adjust terminal and rise to higher order PCCI.
10. device according to claim 9, is characterized in that:
Described PCCI adjusts submodule, and the PCCI for successively evenly reducing described current rank according to default step-length is greater than described first to described up Packet Error Ratio and stops thresholding; According to the number of times of described default step-length and described reduction PCCI, obtain the drop-out value of described PCCI.
11. devices according to claim 8, is characterized in that, described second adaptation module comprises:
AMC adjusts submodule, for exiting thresholding according to the history average of described terminal CINR and described terminal current rank acquiescence thresholding, obtains the adjusted value of PCCI;
Self adaptation raises submodule, and during for giving tacit consent to thresholding, the threshold value on whole rank increases the adjusted value of described PCCI.
12. devices according to claim 11, is characterized in that,
Described AMC adjusts submodule, if be greater than the second adjustment threshold value for up Packet Error Ratio, obtain the adjusted value=C-P+1 of PCCI, the history average of wherein said terminal CINR is C, and the thresholding that exits of described terminal current rank acquiescence thresholding is P.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010208927.6A CN102291809B (en) | 2010-06-21 | 2010-06-21 | The method that ascending exterior ring power controls and device |
| PCT/CN2010/078804 WO2011160386A1 (en) | 2010-06-21 | 2010-11-16 | Method and apparatus for uplink outer-loop power control |
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| CN201010208927.6A CN102291809B (en) | 2010-06-21 | 2010-06-21 | The method that ascending exterior ring power controls and device |
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| CN105634655B (en) * | 2014-10-27 | 2019-03-22 | 普天信息技术有限公司 | A kind of method and system of MCS selection adjusting thresholds |
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| CN1790966A (en) * | 2004-12-17 | 2006-06-21 | 中兴通讯股份有限公司 | Self-adaptive code modulating method |
| CN101494515A (en) * | 2008-01-22 | 2009-07-29 | 中兴通讯股份有限公司 | Down self-adapting modulation coding method and base station of OFDM system |
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| GB2410152B (en) * | 2004-01-15 | 2006-03-22 | Toshiba Kk | Radio communications system using adaptive modulation, radio transmission apparatus and radio receiving apparatus |
| CN1945996B (en) * | 2005-10-09 | 2010-07-21 | Sk电信有限公社 | Method and system for control power in portable Internet system |
| CN101141157B (en) * | 2006-09-08 | 2011-07-06 | 华为技术有限公司 | Uplink power control method and network side equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1790966A (en) * | 2004-12-17 | 2006-06-21 | 中兴通讯股份有限公司 | Self-adaptive code modulating method |
| CN101494515A (en) * | 2008-01-22 | 2009-07-29 | 中兴通讯股份有限公司 | Down self-adapting modulation coding method and base station of OFDM system |
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| CN102291809A (en) | 2011-12-21 |
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