CN101340213B - Power control method, system and sending terminal - Google Patents
Power control method, system and sending terminal Download PDFInfo
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- CN101340213B CN101340213B CN2007101185039A CN200710118503A CN101340213B CN 101340213 B CN101340213 B CN 101340213B CN 2007101185039 A CN2007101185039 A CN 2007101185039A CN 200710118503 A CN200710118503 A CN 200710118503A CN 101340213 B CN101340213 B CN 101340213B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the invention discloses a power control method and includes the following steps: when a sending end determines that the quality of physical channels in which a receiving end exists exceeds the preset requirements of the channel quality proposed by the highest modulation coding MCS mode, if the positive confirmation information is received from the receiving end, a sending end decreases the sending power for sending data to the receiving end according to the step length of confirmed decreased power and sends data to the receiving end with the decreased sending power; if the negative confirmation information is received from the receiving end, the sending end increases the sending power for sending data to the receiving end according to the step length of the confirmed increased power and sends data to the receiving end with the increased sending power. The embodiment also discloses a power control system and a sending end which can realize the power control method of the embodiment. The waste of power resources can be avoided and the interference to the interior of the system can be reduced by adopting the method, the system and the sending end disclosed by the embodiment.
Description
Technical field
The present invention relates to the power control techniques in the radio communication, particularly a kind of Poewr control method, system and transmitting terminal.
Background technology
In cell mobile communication systems, wireless channel is a time varying channel, comprises the variation of propagation loss, rapid fading, slow fading and interference etc., thereby the reception quality of signals also is a variations per hour that receives the channel condition influence.Link circuit self-adapting is exactly through adjusting the process that transmission parameter comes compensate for channel to change adaptively.
Power control is a kind of link adaptation techniques, and it is the power that transmits through adjustment, when guaranteeing communication quality, reduces transmitting power as far as possible and reaches the interference to other user, thereby reach the requirement to communication reliability and validity.
And adaptive coding and modulating (AMC) technology is another kind of link circuit self-adapting (LinkAdaptation) technology based on physical layer; Its basic principle is: according to the modulation of variation adaptively modifying and coding (MCS, modulation and coding scheme) mode of channel quality.The process of adaptively modifying MCS mode comprises: adjust the transmission rate of receiving terminal place physical channel adaptively according to the variation of channel quality, and then increase the average throughput of sub-district, transmitting terminal place.
In the radio packet communication system that adopts the AMC technology, common operational MCS mode is the finite aggregate that defines in advance in the consensus standard, thereby the peak transfer rate that can support of institute of this system is definite by the MCS mode of the high-order of this system definition.Even channel quality exceeds the requirement of high-order MCS mode to channel quality, system also can only use predefined high-order MCS mode.That is to say, when channel quality exceeds high-order MCS mode to the requiring of channel quality, can't further improve the transmission rate of sending data to receiving terminal.
The transmission rate of receiving terminal and transmitting terminal are directly proportional to the transmitting power of this receiving terminal and the channel quality of this receiving terminal place physical channel, i.e. high channel credit rating of maximum transmission rate correspondence and maximum transmission power.In the system that adopts the AMC technology, transmitting terminal is a fixed value to the transmitting power that receiving terminal sends data, adopts the maximum transmission power of transmitting terminal usually.When the channel quality of receiving terminal place physical channel surpasses high-order MCS mode to the requiring of channel quality; Transmitting terminal still adopts maximum transmission power to send data to receiving terminal; And at this moment transmission rate can not further improve, and therefore will inevitably cause the waste of a part of power resource.Simultaneously, transmitting terminal continue with maximum transmission power to this receiving terminal send data can be to system in the communication quality of other receiving terminal or sub-district cause serious disturbance.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of method of power control on the one hand, and the system and the device of power control is provided on the other hand, avoids the waste of power resource, reduces the interference of internal system.
The Poewr control method that the embodiment of the invention provides comprises:
When transmitting terminal confirms that the channel quality of receiving terminal place physical channel surpasses predefined high order modulation coding MCS mode to the requiring of channel quality,
If said transmitting terminal receives the positive confirmation message from said receiving terminal, then said transmitting terminal sends data with the transmitting power after the downward modulation to said receiving terminal according to the transmitting power of the downward modulation power step size downward modulation of confirming to said receiving terminal transmission data;
If said transmitting terminal receives the negative acknowledgement message from said receiving terminal, then said transmitting terminal raises the transmitting power of sending data to said receiving terminal according to the rise power step size of confirming, sends data with the transmitting power after raising to said receiving terminal.
The power control system that the embodiment of the invention provides comprises:
Transmitting terminal is used for sending data to receiving terminal; Reception is from the feedback information of said receiving terminal; When the channel quality of confirming said receiving terminal place physical channel surpasses predefined high-order MCS mode to the requiring of channel quality; Judge whether the affirmation message in the said feedback information is positive confirmation message; If, then according to the transmitting power of the downward modulation power step size downward modulation of confirming to said receiving terminal transmission data; Otherwise, raise the transmitting power of sending data to said receiving terminal according to the rise power step size of confirming; Said receiving terminal is used to receive the data from said transmitting terminal, returns feedback information to said transmitting terminal.
The transmitting terminal that the embodiment of the invention provides comprises:
Data are sent and information receiving unit, are used for sending data according to the transmitting power that power adjustment unit is confirmed to receiving terminal; Reception is from the feedback information of said receiving terminal;
Power adjustment unit; When the channel quality that is used for confirming said receiving terminal place physical channel surpasses predefined high-order MCS mode to the requiring of channel quality; Judge whether the affirmation message in the said feedback information is positive confirmation message; If, then according to the transmitting power of the downward modulation power step size downward modulation of confirming to said receiving terminal transmission data; Otherwise, raise the transmitting power of sending data to said receiving terminal according to the rise power step size of confirming.
Visible by above technical scheme; In the embodiment of the invention; When transmitting terminal confirms that the channel quality of receiving terminal place physical channel of self service surpasses predefined high-order MCS mode to the requiring of channel quality; If it is positive confirmation message that transmitting terminal is confirmed the affirmation message that receives, then transmitting terminal sends the transmitting power of data to receiving terminal according to the downward modulation power step size downward modulation of confirming; If it is negative acknowledgement message that transmitting terminal is confirmed the affirmation message that receives, then transmitting terminal raises the transmitting power of sending data to receiving terminal according to the rise power step size of confirming.Therefore; The Poewr control method that utilizes the embodiment of the invention to provide; Transmitting terminal can be according to adjusting the transmitting power of sending data to this receiving terminal from the affirmation message of receiving terminal and the transmitting power adjustment strategy of setting; Thereby can avoid in the prior art because the transmitting power that transmitting terminal sends data to receiving terminal is always the maximum power of transmitting terminal, the power resource that possibly cause waste.
Simultaneously; Because under the good situation of the channel quality of receiving terminal place physical channel; Be that receiving terminal place physical channel is when continuing to use the high-order MCS mode of setting; Transmitting terminal can reduce the transmitting power of sending data to receiving terminal under the prerequisite that guarantees transmission rate, therefore can reduce the interference to other receiving terminal of internal system or sub-district.
Description of drawings
Fig. 1 is the flow chart of Poewr control method embodiment one of the present invention;
Fig. 2 is the flow chart of Poewr control method embodiment two of the present invention;
Fig. 3 is the structural representation of power control system embodiment of the present invention.
Embodiment
Clearer for the purpose, technical scheme and the beneficial effect that make the embodiment of the invention, below in conjunction with embodiment and accompanying drawing, the embodiment of the invention is done detailed description further.
The Poewr control method that the embodiment of the invention provides comprises: when transmitting terminal confirms that the channel quality of receiving terminal place physical channel surpasses predefined high order modulation coding MCS mode to the requiring of channel quality; If receive positive confirmation message from this receiving terminal; Then transmitting terminal sends data with the transmitting power after the downward modulation to this receiving terminal according to the transmitting power of the downward modulation power step size downward modulation of confirming to these receiving terminal transmission data; If receive the negative acknowledgement message from this receiving terminal, then transmitting terminal raises the transmitting power of sending data to this receiving terminal according to the rise power step size of confirming, sends data with the transmitting power after raising to receiving terminal.
Here, represent that from the positive confirmation message of receiving terminal this receiving terminal correctly receives the data that transmitting terminal sends, negative acknowledgement message representes that this receiving terminal does not correctly receive the data that transmitting terminal sends.
The downward modulation power step size can be set to predefined power control step-size adjustment parameter.
Raise power step size definite method can for: confirm the rise power step size according to target Block Error Rate (BLER) and predefined power control step-size adjustment calculation of parameter.Such as, can be set at raising power step size: 1 subtracts the target Block Error Rate again divided by the merchant of target Block Error Rate, with the product of predefined power control step-size adjustment parameter.
Raise power step size definite method can also for: according to the variation of the employed MCS mode of receiving terminal with respect to a characteristic value of high-order MCS mode, and predefined power control step-size adjustment parameter confirms to raise power step size.The characteristic value here can be the corresponding signal to noise ratio of MCS mode.Such as, can be set at raising power step size: the signal to noise ratio that the corresponding signal to noise ratio of the MCS mode of the current use of receiving terminal is corresponding with high-order MCS mode poor, adjust the product of parameter with predefined power control step-size.
Consider that transmitting terminal possibly only supported the transmitting power in the certain limit, transmitting terminal, may further include before receiving terminal sends data with the transmitting power after reducing in the embodiment of the invention:
Whether transmitting terminal judges transmitting power after the downward modulation less than the minimum emissive power of self supporting, if less than, then send data to receiving terminal with this minimum emissive power; Otherwise, send data to receiving terminal with the transmitting power after the downward modulation.
Transmitting terminal, may further include before receiving terminal sends data with the transmitting power after raising:
Whether the transmitting power after transmitting terminal judge to raise greater than the maximum transmission power of self supporting, if greater than, then send data to receiving terminal with this maximum transmission power; Otherwise, send data to receiving terminal with the transmitting power after raising.
After receiving terminal received the data from transmitting terminal, the feedback information that returns to transmitting terminal not only comprised acknowledge message, also comprised the MCS mode of use.
In the embodiment of the invention, confirm channel quality surpass predefined high-order MCS mode to the method for the requirement of channel quality can for:
The MCS mode that transmitting terminal returns according to receiving terminal; Judge when receiving terminal place physical channel continues to use predefined high-order MCS mode that transmitting terminal confirms that the channel quality of receiving terminal place physical channel surpasses the requirement of predefined high-order MCS mode to channel quality.
Certainly, in practical application, can also adopt other mode to judge whether current channel quality surpasses the requirement of predefined high-order MCS mode to channel quality.
When transmitting terminal confirms that the channel quality of receiving terminal place physical channel surpasses predefined high-order MCS mode to the requiring of channel quality; This method also comprises: judge whether current transmitting power is maximum transmission power; If then do not carry out the transmitting power adjustment; Otherwise directly transmitting power is set to maximum transmission power, or raises the transmitting power of sending data to receiving terminal according to the step-length of confirming, if the transmitting power after raising is then sent data according to maximum transmission power to receiving terminal greater than maximum transmission power; Otherwise, send data to receiving terminal according to the transmitting power after raising.
Fig. 1 is the flow chart of Poewr control method embodiment one of the present invention, and this flow process comprises:
Here; Judge receiving terminal place physical channel whether continue to use high-order MCS mode method can for: if preestablish in the double feedback information that receives of transmitting terminal from transmitting terminal; MCS mode information is high-order MCS, and then transmitting terminal confirms that receiving terminal place physical channel continues to use high-order MCS mode.Certainly, " twice " here is a kind of concrete implementation, in practical application, can also set the number of times that receives continuously according to actual conditions.
In addition, can also adopt other feasible method to judge whether receiving terminal place physical channel continues to use high-order MCS mode.
Here, downward modulation transmitting power step-length can be predefined power control step-size adjustment parameter.
Here, raise the transmitting power step-length definite method can for: confirm the rise power step size according to target Block Error Rate (BLER) and predefined power control step-size adjustment calculation of parameter.
Concrete calculating raise power step size method can for:
Step-up＝Step-size×(1-BLER-target)/BLER-target，
Wherein, Step-size is predefined power control step-size adjustment parameter, and this parameter can rule of thumb be set, such as being set at 1dB; BLER-target is the target BLER of power adjustment, and this target BLER is confirmed according to the quality of service to the receiving terminal transport service by transmitting terminal.Can also for: when the MCS of present feedback mode is the MCS mode of high-order, raises power step size and be set to predefined power control step-size adjustment parameter; When the non-high-order MCS mode of the MCS of present feedback mode, according to the variation of the employed MCS mode of receiving terminal with respect to a characteristic value of high-order MCS mode, and predefined power control step-size adjustment parameter confirms to raise power step size.
Concrete calculating confirm to raise power step size method can for:
Wherein, Step-size is predefined power control step-size adjustment parameter; MCS
MaxBe a corresponding characteristic value of high-order MCS mode, MSC
CurrentBe a corresponding characteristic value of the MCS mode of current feedback.This characteristic value can be the corresponding signal to noise ratio of MSC mode.
Whether the transmitting power after step 107, transmitting terminal judge to raise greater than the maximum transmission power of transmitting terminal, if greater than, then send data to receiving terminal according to maximum transmission power, return step 101; Otherwise, send data according to the transmitting power of calculating gained to receiving terminal, return step 101.
Fig. 2 is the flow chart of Poewr control method embodiment two of the present invention, and this flow process comprises:
Here, the step-length of setting is greater than the maximum transmission power of transmitting terminal if current transmit power doubles, and then the maximum transmission power according to transmitting terminal sends data to receiving terminal; Otherwise, send data to receiving terminal according to the transmitting power after raising.
In this step, the step-length of setting can be identical with the rise transmitting power step-length confirmed in the step 106, also can be different, confirm that the method for this step-length can adopt the method that provides in the step 106, and also can adopt other feasible method.
The embodiment of the invention also provides a kind of power control system of realizing above-mentioned Poewr control method simultaneously, and Fig. 3 is the structural representation of power control system embodiment of the present invention, and this system comprises: transmitting terminal and receiving terminal.Wherein,
Transmitting terminal is used for sending data to receiving terminal; Reception is from the feedback information of receiving terminal; When the channel quality of confirming receiving terminal place physical channel surpasses predefined high-order MCS mode to the requiring of channel quality; Whether judgement is positive confirmation message from the affirmation message in the feedback information of this receiving terminal; If, then according to the transmitting power of the downward modulation power step size downward modulation of confirming to these receiving terminal transmission data; Otherwise, raise the transmitting power of sending data to this receiving terminal according to the rise power step size of confirming;
Receiving terminal is used to receive the data from transmitting terminal, returns feedback information to transmitting terminal.
The feedback information here comprises: the MCS mode that acknowledge message and receiving terminal use.Transmitting terminal can be base station (BS).
Transmitting terminal in the embodiment of the invention comprises:
Data are sent and information receiving unit, are used for sending data according to the transmitting power that power adjustment unit is confirmed to receiving terminal; Reception is from the feedback information of said receiving terminal;
Power adjustment unit; When the channel quality that is used for confirming receiving terminal place physical channel surpasses predefined high-order MCS mode to the requiring of channel quality; Whether judgement is positive confirmation message from the affirmation message in the feedback information of this receiving terminal; If, then according to the transmitting power of the downward modulation power step size downward modulation of confirming to these receiving terminal transmission data; Otherwise, raise the transmitting power of sending data to this receiving terminal according to the rise power step size of confirming.
Power adjustment unit in the above-mentioned transmitting terminal can comprise:
Channel quality is confirmed the unit; Whether the channel quality that is used for confirming receiving terminal place physical channel surpasses the requirement of predefined high-order MCS mode to channel quality; If judge then whether from the affirmation message in the feedback information of this receiving terminal be positive confirmation message;
Step-length is confirmed the unit, is used for when the affirmation message from receiving terminal is positive confirmation message, confirms the downward modulation power step size; When the affirmation message from receiving terminal is negative acknowledgement message, confirm to raise power step size;
The transmitting power adjustment unit is used for confirming the downward modulation power step size that the unit is confirmed according to step-length that the transmitting power of data is sent in downward modulation to corresponding receiving terminal; Or confirm the rise power step size that the unit is confirmed according to step-length, raise the transmitting power of sending data to corresponding receiving terminal.
Step-length in the above-mentioned power adjustment unit confirms that the unit can comprise:
The downward modulation step-length is confirmed the unit, is used for when the affirmation message from receiving terminal is positive confirmation message, and the power control step-size of setting is adjusted parameter as the downward modulation power step size;
Raise step-length and confirm the unit, be used for when the affirmation message from receiving terminal is negative acknowledgement message, confirm to raise power step size according to target block error rate BLER and predefined power control step-size adjustment calculation of parameter; Or the employed MCS mode of returning according to receiving terminal is with respect to the variation of a characteristic value of high-order MCS mode, and predefined power control step-size adjustment parameter confirms to raise power step size.
Transmitting power adjustment unit in the above-mentioned power adjustment unit can comprise:
First adjustment unit is used for confirming the downward modulation power step size that the unit is confirmed according to step-length that the transmitting power of data is sent in downward modulation to corresponding receiving terminal; Or confirm the rise power step size that the unit is confirmed according to step-length, raise the transmitting power of sending data to corresponding receiving terminal;
Second adjustment unit; Be used for when channel quality confirms that the unit confirms that the channel quality of receiving terminal place physical channel surpasses predefined high-order MCS mode to the requiring of channel quality; Raise the transmitting power of sending data to this receiving terminal according to the step-length of confirming; If the transmitting power after raising is greater than the maximum transmission power of transmitting terminal, then with maximum transmission power as transmitting power; Otherwise, with the transmitting power after raising as transmitting power.
In the embodiment of the invention; Transmitting terminal can be according to adjusting the transmitting power of sending data to this receiving terminal from the affirmation message of receiving terminal and the transmitting power adjustment strategy of setting; Thereby can avoid in the prior art because the transmitting power that transmitting terminal sends data to receiving terminal is always the maximum power of transmitting terminal, the power resource that possibly cause waste.
Simultaneously; In the embodiment of the invention; Under the good situation of the channel quality of receiving terminal place physical channel, when promptly receiving terminal place physical channel continued to use the high-order MCS mode of setting, transmitting terminal can be under the prerequisite that guarantees transmission rate; Reduction is sent the transmitting power of data to receiving terminal, so can reduce the interference to other receiving terminal of internal system or sub-district.
In a word, the above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a Poewr control method is characterized in that, comprising:
When transmitting terminal confirms that the channel quality of receiving terminal place physical channel surpasses predefined high order modulation coding MCS mode to the requiring of channel quality,
If said transmitting terminal receives the positive confirmation message from said receiving terminal, then said transmitting terminal sends data with the transmitting power after the downward modulation to said receiving terminal according to the transmitting power of the downward modulation power step size downward modulation of confirming to said receiving terminal transmission data;
If said transmitting terminal receives the negative acknowledgement message from said receiving terminal, then said transmitting terminal raises the transmitting power of sending data to said receiving terminal according to the rise power step size of confirming, sends data with the transmitting power after raising to said receiving terminal.
2. the method for claim 1 is characterized in that, definite method of said downward modulation power step size is: the power control step-size of setting is adjusted parameter as the downward modulation power step size.
3. method as claimed in claim 2 is characterized in that, definite method of said rise power step size is: confirm said rise power step size according to target block error rate BLER and said power control step-size adjustment calculation of parameter;
Said rise power step size equals: 1 subtracts said target Block Error Rate again divided by the merchant of said target Block Error Rate, with the product of said power control step-size adjustment parameter.
4. method as claimed in claim 2; It is characterized in that; Definite method of said rise power step size is: according to the variation of the employed MCS mode of said receiving terminal with respect to a characteristic value of said high-order MCS mode, and said power control step-size adjustment parameter confirms to raise power step size;
Said rise power step size equals: the signal to noise ratio that the corresponding signal to noise ratio of the MCS mode of the current use of said receiving terminal is corresponding with said high-order MCS mode poor, adjust the product of parameter with said power control step-size.
5. according to claim 1 or claim 2 method is characterized in that, said with the transmitting power after the downward modulation before said receiving terminal sends data, further comprise:
Said transmitting terminal is judged transmitting power after the downward modulation whether less than the minimum emissive power of said transmitting terminal, if less than, then send data to said receiving terminal with said minimum emissive power; Otherwise, send data to said receiving terminal with the transmitting power after the said downward modulation.
6. like each described method in the claim 1,3,4, it is characterized in that, said with the transmitting power after raising before said receiving terminal sends data, further comprise:
Said transmitting terminal is judged transmitting power after raising whether greater than the maximum transmission power of said transmitting terminal, if greater than, then send data to said receiving terminal with said maximum transmission power; Otherwise, send data to said receiving terminal with the transmitting power after the said rise.
7. like each described method of claim 1 to 4, it is characterized in that said definite channel quality surpasses predefined high-order MCS mode and to the method for the requirement of channel quality is:
The MCS mode that said transmitting terminal returns according to said receiving terminal; Judge when said receiving terminal place physical channel continues to use predefined high-order MCS mode that said transmitting terminal confirms that the channel quality of said receiving terminal place physical channel surpasses the requirement of predefined high-order MCS mode to channel quality.
8. method as claimed in claim 7; It is characterized in that; This method further comprises: when said transmitting terminal confirms that the channel quality of said receiving terminal place physical channel surpasses predefined high-order MCS mode to the requiring of channel quality; Said transmitting terminal judges whether current transmitting power is the maximum transmission power of self, if then do not carry out the transmitting power adjustment; Otherwise the transmitting power of sending data to said receiving terminal is set to the maximum transmission power self supported, or raises the transmitting power of sending data to said receiving terminal according to the step-length of confirming, sends data according to the transmitting power after raising to said receiving terminal.
9. method as claimed in claim 8 is characterized in that, when said transmitting terminal raises when said receiving terminal sends the transmitting power of data according to the step-length of confirming, said according to the transmitting power after raising before said receiving terminal sends data, further comprise:
Said transmitting terminal is judged transmitting power after raising whether greater than self maximum transmission power, if greater than, then send data to said receiving terminal according to said maximum transmission power; Otherwise, send data to said receiving terminal according to the transmitting power after raising.
10. power control system comprises:
Transmitting terminal is used for sending data to receiving terminal; Reception is from the feedback information of said receiving terminal; When the channel quality of confirming said receiving terminal place physical channel surpasses predefined high-order MCS mode to the requiring of channel quality; Judge whether the affirmation message in the said feedback information is positive confirmation message; If, then according to the transmitting power of the downward modulation power step size downward modulation of confirming to said receiving terminal transmission data; Otherwise, raise the transmitting power of sending data to said receiving terminal according to the rise power step size of confirming;
Said receiving terminal is used to receive the data from said transmitting terminal, returns feedback information to said transmitting terminal.
11. system as claimed in claim 10 is characterized in that, said transmitting terminal is a base station BS.
12. a transmitting terminal is characterized in that, comprising:
Data are sent and information receiving unit, are used for sending data according to the transmitting power that power adjustment unit is confirmed to receiving terminal; Reception is from the feedback information of said receiving terminal;
Power adjustment unit; When the channel quality that is used for confirming said receiving terminal place physical channel surpasses predefined high-order MCS mode to the requiring of channel quality; Judge whether the affirmation message in the said feedback information is positive confirmation message; If, then according to the transmitting power of the downward modulation power step size downward modulation of confirming to said receiving terminal transmission data; Otherwise, raise the transmitting power of sending data to said receiving terminal according to the rise power step size of confirming.
13. transmitting terminal as claimed in claim 12 is characterized in that, said power adjustment unit comprises:
Channel quality is confirmed the unit; Whether the channel quality that is used for confirming said receiving terminal place physical channel surpasses the requirement of predefined high-order MCS mode to channel quality; If judge then whether the affirmation message in the said feedback information is positive confirmation message;
Step-length is confirmed the unit, is used for when said acknowledge message is positive confirmation message, confirms the downward modulation power step size; When said acknowledge message is negative acknowledgement message, confirm to raise power step size;
The transmitting power adjustment unit is used for according to said downward modulation power step size, and the transmitting power of data is sent in downward modulation to said receiving terminal; Or, raise the transmitting power of sending data to said receiving terminal according to said rise power step size.
14. transmitting terminal as claimed in claim 13 is characterized in that, said step-length confirms that the unit comprises:
The downward modulation step-length is confirmed the unit, is used for when said acknowledge message is positive confirmation message, and the power control step-size of setting is adjusted parameter as the downward modulation power step size;
Raise step-length and confirm the unit; Be used for when said acknowledge message is negative acknowledgement message; Confirm to raise power step size according to target block error rate BLER and said power control step-size adjustment calculation of parameter; Said rise power step size equals: 1 subtracts said target Block Error Rate again divided by the merchant of said target Block Error Rate, with the product of said power control step-size adjustment parameter; Or according to of the variation of the employed MCS mode of said receiving terminal with respect to a characteristic value of said high-order MCS mode; And said power control step-size adjustment parameter confirms to raise power step size; Said rise power step size equals: the signal to noise ratio that the corresponding signal to noise ratio of the MCS mode of the current use of said receiving terminal is corresponding with said high-order MCS mode poor, adjust the product of parameter with said power control step-size.
15. transmitting terminal as claimed in claim 13 is characterized in that, said transmitting power adjustment unit comprises:
First adjustment unit is used for according to said downward modulation power step size, and the transmitting power of data is sent in downward modulation to said receiving terminal; Or, raise the transmitting power of sending data to said receiving terminal according to said rise power step size;
Second adjustment unit; Be used for when said channel quality confirms that the unit confirms that the channel quality of said receiving terminal place physical channel surpasses predefined high-order MCS mode to the requiring of channel quality; Raise the transmitting power of sending data to said receiving terminal according to the step-length of confirming; If the transmitting power after raising is greater than maximum transmission power, then with maximum transmission power as transmitting power; Otherwise, with the transmitting power after raising as transmitting power.
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| CN2007101185039A CN101340213B (en) | 2007-07-06 | 2007-07-06 | Power control method, system and sending terminal |
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| CN2007101185039A CN101340213B (en) | 2007-07-06 | 2007-07-06 | Power control method, system and sending terminal |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102469564A (en) * | 2010-11-16 | 2012-05-23 | 中兴通讯股份有限公司 | Method and device for determining adjustment strategy of downlink power gain |
| CN102026386B (en) * | 2010-12-13 | 2013-12-04 | 华为技术有限公司 | Resource allocation method and device as well as base station equipment |
| CN102088725B (en) * | 2011-02-23 | 2015-01-21 | 华为技术有限公司 | Uplink power detection method, device and base station equipment |
| EP3080938B1 (en) | 2013-12-09 | 2020-05-06 | Signify Holding B.V. | Method for operating a node in a network and node device |
| CN103840864B (en) * | 2014-02-25 | 2017-10-31 | 大唐移动通信设备有限公司 | The method and device that a kind of TDS external circule power controls signal to noise ratio updates |
| CN104159319A (en) * | 2014-08-26 | 2014-11-19 | 大唐移动通信设备有限公司 | Method of transmitting competition solution information and base station |
| 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 |
| CN105338607B (en) * | 2015-10-12 | 2018-10-19 | 中国联合网络通信集团有限公司 | Poewr control method and access point |
| WO2017070957A1 (en) | 2015-10-30 | 2017-05-04 | 华为技术有限公司 | Data sending method and device |
| CN111343673B (en) * | 2018-12-18 | 2023-01-06 | 华为技术有限公司 | Method for determining transmission parameters and wireless device |
| CN116347569B (en) * | 2022-10-09 | 2024-03-15 | 荣耀终端有限公司 | Data transmission method, program product and electronic device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1357681A1 (en) * | 2002-04-25 | 2003-10-29 | Samsung Electronics Co., Ltd. | Power controllable wireless mobile communications system of adaptive modulation and coding scheme and method therefor |
| CN1773901A (en) * | 2005-11-17 | 2006-05-17 | 上海交通大学 | Minimum transmitting power adaptive modulating method based on service quality requirement |
-
2007
- 2007-07-06 CN CN2007101185039A patent/CN101340213B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1357681A1 (en) * | 2002-04-25 | 2003-10-29 | Samsung Electronics Co., Ltd. | Power controllable wireless mobile communications system of adaptive modulation and coding scheme and method therefor |
| CN1454015A (en) * | 2002-04-25 | 2003-11-05 | 三星电子株式会社 | Power controllable radio mobile communication system and method |
| CN1773901A (en) * | 2005-11-17 | 2006-05-17 | 上海交通大学 | Minimum transmitting power adaptive modulating method based on service quality requirement |
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