CN100358253C - Method for regulating emission power of automatic retransmitting request system - Google Patents
Method for regulating emission power of automatic retransmitting request system Download PDFInfo
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- CN100358253C CN100358253C CNB2004100572064A CN200410057206A CN100358253C CN 100358253 C CN100358253 C CN 100358253C CN B2004100572064 A CNB2004100572064 A CN B2004100572064A CN 200410057206 A CN200410057206 A CN 200410057206A CN 100358253 C CN100358253 C CN 100358253C
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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 present invention provides a method for adjusting the transmitting power of an automatic retransmitting request system. The present invention is characterized in that the transmitting power of a physical channel of a data transmitting packet is adjusted by retransmitting probability counted by a transmitting terminal; if counted retransmitting probability is greater than or equal to the upper limiting value of the set probability threshold value, the transmitting power of the physical channel of the current data transmitting packet; if the counted transmitting probability is less than or equal to the lower limiting value of the probability threshold, the transmitting power of the physical channel of the current data transmitting packet; if the counted retransmitting probability is between the upper and the lower limiting value of the set probability threshold, the transmitting power of the physical channel of the data transmitting packet is not changed. The present invention can be used singly and can be merged with other adjustment processes of power control. With the present invention, the retransmitting probability of the data transmitting packet is always maintained in the set good range; thus, the present invention can obtain high gain, reduce system interference and enhance system throughput, and accordingly, the performance of systems is enhanced.
Description
Technical field
The present invention relates to the error-control technique field, be meant the method for the transmitting power of the automatic repeat requests of adjustment system especially.
Background technology
In data communication system, often adopt automatic repeat requests (ARQ, Automatic RepeatRequest) technology to carry out error control.This ARQ technology realization mechanism is: transmitting terminal adds redundant code character according to certain rule in armed information, receiving terminal carries out error detection according to the rule of correspondence to the information that receives, and generate answer signal according to the error detection result and feed back to transmitting terminal, transmitting terminal thinks have that group information of mistake to retransmit to receiving terminal according to answer signal, till the error-free code position of code character.
Figure 1 shows that the realization flow schematic diagram of ARQ technology.Transmitting terminal sends data to receiving terminal, if receiving terminal thinks that the data that receive are errorless, then sends out affirmation (ACK) signaling to transmitting terminal, and transmitting terminal receives the ACK signaling, thinks that receiving terminal has correctly received last data, so begin to send new data; If receiving terminal thinks that after testing the data that receive have the mistake that can not correct, then send out and do not confirm (NACK) signaling to transmitting terminal, making a start receives the NACK signaling, thinks that receiving terminal does not have the correct last data that receive, so retransmit last data.
The code character that sends if make a start has the ability of error correction and error detection simultaneously, then is called (H-ARQ) technology that retransmits automatically of mixing.
The ARQ technology has obtained to use widely in to the not high business of delay requirement.Recently, the high speed downlink packet of 3-G (Generation Three mobile communication system) inserts in (HSDPA, High Speed Downlink PacketAccess) and the up enhancement techniques (E-UL, Enhanced Uplink), also adopt the H-ARQ technology to carry out error control, to improve systematic function in physical layer.
In the ARQ system, different retransmission probabilities is different to the influence of systematic function.For example, in the up enhancement techniques of broadband CDMA (WCDMA), the retransmission probability of initialize signal is generally 10%～20%.If retransmission probability greater than 20%, then may reduce user's throughput, and if retransmission probability less than 10%, then will make and adopt the system of ARQ technology to compare no additional gain with the system that does not adopt the ARQ technology.Therefore, how to make the retransmission probability of system remain at the gain to obtain in the preferable scope, being one has problem to be solved.
Summary of the invention
In view of this, the object of the present invention is to provide two kinds of methods of adjusting the transmitting power of ARQ system, maintain all the time in the preferable working range to guarantee the physical channel retransmission probability that sends packet.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of adjusting the transmitting power of automatic repeat requests system, this method may further comprise the steps:
A, transmitting terminal send current data packet, and judge whether current transfer data packets is the initial packet that transmits, if, then wait for response message from receiving terminal, execution in step b then, otherwise wait for and repeat this step next time when sending packet;
B, add up the retransmission probability of initial transfer data packets according to the response message of the initial transfer data packets in a period of time, and this probability compared with the probability threshold value that has been provided with, if the retransmission probability that counts is more than or equal to the higher limit of the probability threshold value that has been provided with, then improve the transmitting power of the physical channel of current transmission packet, re-execute step a then, if the retransmission probability that counts is smaller or equal to the lower limit of the probability threshold value that has been provided with, then reduce the transmitting power of the physical channel of current transmission packet, re-execute step a then, if the retransmission probability that counts is between the upper lower limit value of the probability threshold value that has been provided with, then keep the transmitting power of physical channel of current transmission packet constant, re-execute step a then.
Preferably, the described judgement of step a is to judge according to the preceding response message from receiving terminal that once receives, if response message is to confirm the ACK signaling, then the packet that this transmitted is the initial packet that transmits, if response message is not confirm the NACK signaling, then the packet that this transmitted is the packet of non-initial transmission.Preferably, the described judgement of step a is according to the property determine of metadata cache.
Preferably, the described statistics of step b is after each transmitting power adjustment finishes, and the record before removing restarts statistics.
Preferably, the described statistics of step b is after each transmitting power adjustment finishes, and the record before the accumulative total is added up together.
Preferably, the method for the transmitting power of the physical channel of the current transmission packet of the described raising of step b is: current transmitting power is added a predefined step value, perhaps, current transmitting power is improved the value of a predefined percentage.
Preferably, the method for the transmitting power of the physical channel of the current transmission packet of the described reduction of step b is: current transmitting power is deducted a predefined step value, perhaps, current transmitting power is reduced the value of a predefined percentage.
Preferably, the physical channel of described current transmission packet comprises the physical channel that sends initial transfer data packets and sends the physical channel of retransmission data packet may, and the transmitting power of physical channel that sends initial transfer data packets is more than or equal to the transmitting power of the physical channel that sends retransmission data packet may.
A kind of method of adjusting the transmitting power of automatic repeat requests system, this method may further comprise the steps:
A, calculate the adjustment amount of the transmitting power of this physical channel respectively according to the retransmission probability of the power control commands of physical channel and initial transfer data packets;
After B, the adjustment amount addition, obtain the final adjustment amount of the transmitting power of this physical channel, use the transmitting power that this final adjustment amount is adjusted this physical channel described two transmitting powers of steps A.
Preferably, the power control commands of described physical channel is the power control command in the special physical controlling channel of upward, or the power control command in the downlink dedicated physical control channel.
Preferably, the retransmission probability of the initial transfer data packets of the described basis method of calculating the transmitting power adjustment amount of this physical channel may further comprise the steps:
A1, transmitting terminal send current data packet, and judge whether current transfer data packets is the initial packet that transmits, if then wait for the response message that receives from receiving terminal, execution in step A2 then, otherwise wait for and repeat this step next time when sending packet;
A2, add up the retransmission probability of initial transfer data packets according to the response message of the initial transfer data packets in a period of time, and this probability compared with the probability threshold value that has been provided with, if the retransmission probability that counts is more than or equal to the higher limit of the probability threshold value that has been provided with, then the adjustment amount of the transmitting power of this physical channel is positive step value, if the retransmission probability that counts is smaller or equal to the lower limit of the probability threshold value that has been provided with, then the adjustment amount of the transmitting power of this physical channel is negative step value, if the retransmission probability that counts is between the upper lower limit value of the probability threshold value that has been provided with, then the adjustment amount of the transmitting power of this physical channel is zero.
The retransmission probability that the present invention utilizes transmitting terminal to add up, transmitting power to the physical channel that sends packet is adjusted, if the retransmission probability that promptly counts is more than or equal to the higher limit of the probability threshold value that has been provided with, then improve the transmitting power of the physical channel of current transmission packet, if the retransmission probability that counts is smaller or equal to the lower limit of the probability threshold value that has been provided with, then reduce the transmitting power of the physical channel of current transmission packet, if the retransmission probability that counts between the upper lower limit value of the probability threshold value that has been provided with, then keeps the transmitting power of physical channel of current transmission packet constant.The present invention both can use separately also can merge with other power control adjustment process and use.Use the present invention, the retransmission probability that sends packet is remained in the preferred range that has been provided with, not only can obtain higher gain, reduce system interference, and improved throughput of system, and then improved the performance of system.
Description of drawings
Figure 1 shows that the realization flow schematic diagram of ARQ technology;
Figure 2 shows that the schematic flow sheet of the transmitting power of the physical channel of using adjustment transmission packet of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail again.
In the ARQ technology, transmitting terminal just judges whether retransmit this packet according to the response message that receives thereupon after initial packet that transmits of every transmission, and thus, the initial retransmission probability of transmitting terminal in statistics a period of time is easy to realize.The retransmission probability that the present invention utilizes transmitting terminal to add up is just adjusted the transmitting power of the physical channel that sends packet, with the retransmission probability that guarantees to send packet in the preferred range that has been provided with, thereby obtain higher gain to improve systematic function.
Figure 2 shows that the schematic flow sheet of the transmitting power of the physical channel of using adjustment transmission packet of the present invention.
Above-mentioned judgement can be judged according to the preceding response message from receiving terminal that once receives, if response message is the ACK signaling, then the packet that this transmitted is the initial packet that transmits, if response message is the NACK signaling, then the packet that this transmitted is the packet of non-initial transmission; Perhaps, above-mentioned judgement is judged according to the attribute of metadata cache.
The physical channel of above-mentioned current transmission packet comprises physical channel that sends initial transfer data packets and the physical channel that sends retransmission data packet may, the transmitting power of physical channel that sends initial transfer data packets is generally more than or equal to the transmitting power of the physical channel that sends retransmission data packet may, and send the transmitting power of the physical channel of retransmission data packet may, adjust according to retransmission probability simultaneously with the transmitting power of the physical channel that sends initial transfer data packets.
The process of above-mentioned transmitting power adjustment both can be used separately, also can merge with other power adjustment process and use.The high-speed downstream Physical Shared Channel (HS-PDSCH, High Speed Physical Downlink Shared Channel) that inserts in (HSDPA) with high speed downlink packet is an example below, specifies to merge the implementation procedure of using:
At first, calculate the adjustment amount of the transmitting power of HS-PDSCH physical channel respectively according to the retransmission probability of power control commands among the special physical controlling channel of upward DPCCH and initial transfer data packets.
The method of using the adjustment amount of the power control commands Computational Physics channel transmitting power among the DPCCH is a prior art, no longer describes in detail at this.
The method that the retransmission probability of using initial transfer data packets calculates the transmitting power adjustment amount of this physical channel may further comprise the steps:
The retransmission probability of initial transfer data packets is compared with the probability threshold value that has been provided with, if the retransmission probability that counts is more than or equal to the higher limit of the probability threshold value that has been provided with, then the adjustment amount of the transmitting power of this physical channel is positive step value, if the retransmission probability that counts is smaller or equal to the lower limit of the probability threshold value that has been provided with, then the adjustment amount of the transmitting power of this physical channel is negative step value, if the retransmission probability that counts is between the upper lower limit value of the probability threshold value that has been provided with, then the adjustment amount of the transmitting power of this physical channel is zero.
Then, after the adjustment amount addition with two above-mentioned transmitting powers, obtain the final adjustment amount of the transmitting power of this physical channel, use the transmitting power that this final adjustment amount is adjusted this physical channel.
Above-mentioned is example with the power control commands among the up DPCCH only, can certainly be the power control command in the downlink dedicated used for physical control channel DPCCH, or other power control command.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1, a kind of method of adjusting the transmitting power of automatic repeat requests system is characterized in that this method may further comprise the steps:
A, transmitting terminal send current data packet, and judge whether current transfer data packets is the initial packet that transmits, if then wait for the response message that receives from receiving terminal, execution in step b then, otherwise wait for and repeat this step next time when sending packet;
B, response message according to the initial transfer data packets in a period of time, add up the retransmission probability of initial transfer data packets, and this probability compared with the probability threshold value that has been provided with, if the retransmission probability that counts is more than or equal to the higher limit of the probability threshold value that has been provided with, then improve the transmitting power of the physical channel of current transmission packet, re-execute step a then, if the retransmission probability that counts is smaller or equal to the lower limit of the probability threshold value that has been provided with, then reduce the transmitting power of the physical channel of current transmission packet, re-execute step a then, if the retransmission probability that counts is between the upper lower limit value of the probability threshold value that has been provided with, then keep the transmitting power of physical channel of current transmission packet constant, re-execute step a then.
2, method according to claim 1, it is characterized in that, the described judgement of step a is to judge according to the preceding response message from receiving terminal that once receives, if response message is to confirm the ACK signaling, then the packet that this transmitted is the initial packet that transmits, if response message is not confirm the NACK signaling, then the packet that this transmitted is the packet of non-initial transmission.
3, method according to claim 1 is characterized in that, the described judgement of step a is according to the property determine of metadata cache.
4, method according to claim 1 is characterized in that, the described statistics of step b is after each transmitting power adjustment finishes, and the record before removing restarts statistics.
5, method according to claim 1 is characterized in that, the described statistics of step b is that the record before the accumulative total is added up together after each transmitting power adjustment finishes.
6, method according to claim 1, it is characterized in that, the method of the transmitting power of the physical channel of the current transmission packet of the described raising of step b is: current transmitting power is added a predefined step value, perhaps, current transmitting power is improved the value of a predefined percentage.
7, method according to claim 1, it is characterized in that, the method of the transmitting power of the physical channel of the current transmission packet of the described reduction of step b is: current transmitting power is deducted a predefined step value, perhaps, current transmitting power is reduced the value of a predefined percentage.
8, method according to claim 1, it is characterized in that, the physical channel of described current transmission packet comprises the physical channel that sends initial transfer data packets and sends the physical channel of retransmission data packet may, and the transmitting power of physical channel that sends initial transfer data packets is more than or equal to the transmitting power of the physical channel that sends retransmission data packet may.
9, a kind of method of adjusting the transmitting power of automatic repeat requests system is characterized in that this method may further comprise the steps:
A, calculate the adjustment amount of the transmitting power of this physical channel respectively according to the retransmission probability of the power control commands of physical channel and initial transfer data packets;
After B, the adjustment amount addition, obtain the final adjustment amount of the transmitting power of this physical channel, use the transmitting power that this final adjustment amount is adjusted this physical channel described two transmitting powers of steps A.
10, method according to claim 9 is characterized in that, the power control commands of described physical channel is the power control command in the special physical controlling channel of upward, or the power control command in the downlink dedicated physical control channel.
11, method according to claim 9 is characterized in that, the method that the retransmission probability of the initial transfer data packets of described basis calculates the transmitting power adjustment amount of this physical channel may further comprise the steps:
A1, transmitting terminal send current data packet, and judge whether current transfer data packets is the initial packet that transmits, if then wait for the response message that receives from receiving terminal, execution in step A2 then, otherwise wait for and repeat this step next time when sending packet;
A2, add up the retransmission probability of initial transfer data packets according to the response message of the initial transfer data packets in a period of time, and this probability compared with the probability threshold value that has been provided with, if the retransmission probability that counts is more than or equal to the higher limit of the probability threshold value that has been provided with, then the adjustment amount of the transmitting power of this physical channel is positive step value, if the retransmission probability that counts is smaller or equal to the lower limit of the probability threshold value that has been provided with, then the adjustment amount of the transmitting power of this physical channel is negative step value, if the retransmission probability that counts is between the upper lower limit value of the probability threshold value that has been provided with, then the adjustment amount of the transmitting power of this physical channel is zero.
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| CNB2004100572064A CN100358253C (en) | 2004-08-23 | 2004-08-23 | Method for regulating emission power of automatic retransmitting request system |
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| CNB2004100572064A CN100358253C (en) | 2004-08-23 | 2004-08-23 | Method for regulating emission power of automatic retransmitting request system |
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| CN100358253C true CN100358253C (en) | 2007-12-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8125935B2 (en) * | 2006-12-27 | 2012-02-28 | Alcatel Lucent | Methods for reducing power consumption at transmitters and receivers |
| JP5108801B2 (en) * | 2009-02-02 | 2012-12-26 | パナソニック株式会社 | Network system |
| CN102208967B (en) | 2010-03-31 | 2014-04-09 | 中兴通讯股份有限公司 | Non-adaptive repeat power control method and device for long term evolution (LTE) terminal |
| CN102571739A (en) * | 2011-05-26 | 2012-07-11 | 中兴通讯股份有限公司 | Batch data transmission method and device |
| CN103684533A (en) * | 2012-09-17 | 2014-03-26 | 深圳市云通时代科技开发有限公司 | Bluetooth communication distance adjustment method and bluetooth relay gateway |
| WO2014067126A1 (en) * | 2012-11-02 | 2014-05-08 | 华为技术有限公司 | Method and device for transmitting data packet |
| CN103684550B (en) * | 2013-12-20 | 2018-01-02 | 上海斐讯数据通信技术有限公司 | A kind of Bluetooth signal transmission power adjustment system and mobile terminal |
| US10209763B2 (en) * | 2016-09-09 | 2019-02-19 | Cisco Technology, Inc. | Power aware switching using analytics |
| CN108990036B (en) * | 2018-09-27 | 2020-02-11 | 珠海格力电器股份有限公司 | Method, device, storage medium and signal transceiver for adjusting transmission power |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003019817A1 (en) * | 2001-08-24 | 2003-03-06 | Interdigital Technology Corporation | Physical layer automatic repeat request (arq) |
| CN1411182A (en) * | 2001-09-27 | 2003-04-16 | 华为技术有限公司 | Power control method based on mixed automatic retransmission mechanism |
| CN1423497A (en) * | 2001-12-07 | 2003-06-11 | 厦门雅讯网络股份有限公司 | Method for adaptive regulation mobile station transmitting power |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003019817A1 (en) * | 2001-08-24 | 2003-03-06 | Interdigital Technology Corporation | Physical layer automatic repeat request (arq) |
| CN1411182A (en) * | 2001-09-27 | 2003-04-16 | 华为技术有限公司 | Power control method based on mixed automatic retransmission mechanism |
| CN1423497A (en) * | 2001-12-07 | 2003-06-11 | 厦门雅讯网络股份有限公司 | Method for adaptive regulation mobile station transmitting power |
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