CN101777961A - Communication device capable of adjusting consumption power, method thereof and Ethernet communication device - Google Patents
Communication device capable of adjusting consumption power, method thereof and Ethernet communication device Download PDFInfo
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- CN101777961A CN101777961A CN200910002400A CN200910002400A CN101777961A CN 101777961 A CN101777961 A CN 101777961A CN 200910002400 A CN200910002400 A CN 200910002400A CN 200910002400 A CN200910002400 A CN 200910002400A CN 101777961 A CN101777961 A CN 101777961A
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Abstract
A communication device capable of adjusting consumption power is suitable for receiving received data from another communication device and comprises a receiver and a control circuit, wherein the receiver comprises an analog-to-digital converter and a decoding circuit; the analog-to-digital converter converts the received data into a digital signal for the decoding circuit to decode; the control circuit evaluates a received index capable of representing the communication quality of the receiver according to the digital signal and determines working conditions of the analog-to-digital converter and the decoding circuit based on the received index and a receiving index; and when judging that the received index is accordant with a reference range, the control circuit adjusts a reference current according to the receiving index to lower the linearity of the analog-to-digital converter and adjust the decoding capacity of the decoding circuit according to the receiving index.
Description
Technical field
The invention relates to a kind of reduction power consumption technology, be meant a kind of communicator and method thereof of adjusting consumed power especially.
Background technology
For the specification requirement that meets the high-speed communication device and in response to various may the channel factors, mostly general circuit design is to realize can reach the standard of more being strict with.Such as: the linearity (linearity) of analog-to-digital converter (ADC) is more promoted, or the decoding capability that increases decoding circuit enable to tackle calmly channel effect.But, when realizing higher standard, additionally paid the power consumption of circuit also.
Summary of the invention
Therefore, purpose of the present invention promptly provides a kind of communicator and method thereof of adjusting consumed power, can reduce power consumption under the prerequisite that satisfies the communication standard standard.
So, the present invention can adjust the communicator of consumed power, be applicable to the reception data of reception from another communicator, comprise: receiver, comprise analog-to-digital converter and decoding circuit, this analog-to-digital converter should receive data and be converted to digital signal, decoded for this decoding circuit; And control circuit, can try to achieve the index of being interrogated of the communication quality that can represent this receiver according to this digital signal, and be interrogated index and receive the operative scenario that index decides this analog-to-digital converter and this decoding circuit based on this; Judge this when this control circuit and interrogated index and meet term of reference, can downgrade reference current to reduce the linearity of this analog-to-digital converter, also can receive the decoding capability that index downgrades this decoding circuit according to this according to this reception index.
And the present invention can improve the communication means of connection quality, be applicable to and make the reception data of communicator reception from another communicator, and this communicator comprises the receiver that comprises analog-to-digital converter and decoding circuit, and the method includes the steps of: the reception index is provided; With this analog-to-digital converter these reception data are converted to digital signal, decode for this decoding circuit; Calculate according to this digital signal and to be interrogated index; Interrogated index based on this reception index and this, decided the operative scenario of this analog-to-digital converter and this decoding circuit; Interrogated index and met term of reference when judging this, can be downgraded reference voltage to reduce the linearity of this analog-to-digital converter, also can be received the decoding capability that index downgrades this decoding circuit according to this according to this reception index.
And the Ethernet communicator of the present invention is adjustable consumption reduction power is used for transmitting data and receives data, and comprise: conveyer is used for transmitting this transmission data; Receiver is used for receiving this reception data; And power downgrades control circuit, be used for judging this transmission or receive whether data are the unloaded data that meet the Ethernet communication protocol, and when judging that this transmission or reception data meet the unloaded data of Ethernet communication protocol for this, downgrade the power consumption of this conveyer or receiver.In addition, to downgrade control circuit also can be to judge whether pairing importance index or length index fall within pre-set interval to power.
Description of drawings
Fig. 1 is the calcspar of the preferred embodiment of communicator of the present invention; And
Fig. 2 is a flow chart, illustrates that the control circuit of this preferred embodiment is adjusted each circuitry consumes power.
[main element symbol description]
100 communicators
The 100A communicator
1 conveyer
1A～C conveyer
11 digital to analog converters
11A～C digital to analog converter
12 sending entity unit
12A～C sending entity unit
2 receivers
2A～C receiver
21 automatic gain controllers
22 analog-to-digital converters
23 subtracters
24 equalizing apparatus
241 feedforward eqalizing cricuits
242 feedback equalization devices
243 determining devices
243A～C determining device
244 first subtrators
245 second subtrators
25 decoding circuits
26 receiving entity unit
3 mix module
4 echo neutralizers
5 near-end crosstalk Cancellers
6 far-end crosstalk Cancellers
7 control circuits
81～88 steps
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present invention, with reference in the graphic DETAILED DESCRIPTION OF THE PREFERRED, can clearly present in following cooperation.
In general, be to pass grouped data mutually between communicator 100,100A by transmission medium, then can exchange zero load (idle) data when not passing grouped data mutually and keep writing to each other to each other.Because at different exchange contents, communicator 100, the patient signal to noise ratio (snr) difference of 100A be not so need all to keep fixing communication quality in whole interchange process.
The present invention promptly is based on this theory, dynamically adjusts the operating state of communicator 100 according to exchanging content, in the hope of under the prerequisite that satisfies communication standard standard and consumes least power, realizes the data interchange between communicator 100,110A.
With reference to Fig. 1, the present invention can adjust the preferred embodiment of the communicator 100 of consumed power, be applicable to another communicator 100A and exchange network data (can be grouped data or unloaded data), comprise a plurality of conveyers 1,1A, 1B, 1C, a plurality of receiver 2,2A, 2B, 2C, mixing (hybrid) module 3, echo neutralizer (echo canceller) 4, near-end crosstalk (NEXT) Canceller 5, far-end crosstalk (FEXT) Canceller 6 and control circuit 7.Each conveyer 1,1A～1C comprise a digital to analog converter (DAC) 11,11A～11C and sending entity unit 12,12A～12C (this example is meant entity coding sublayer (PCS)), and receiver 2 comprises automatic gain controller (AAGC) 21, analog-to-digital converter (ADC) 22, subtracter 23, equalizing apparatus 24, decoding circuit 25 and receiving entity unit 26 (this example is meant PCS).Wherein, equalizing apparatus 24 has feedforward eqalizing cricuit 241, feedback equalization device 242, determining device (Slicer) 243, first subtrator 244 and second subtrator 245.
Each conveyer 1,1A～1C produce the source signal that comes that presents digital form, after the conversion by sending entity unit 12,12A～12C and DAC 11,11A～11C (converting digital form to analog form), provide the transmission data to be used as the network data that is delivered to another communicator 100A again to mixing module 3.And echo neutralizer 4 can carry out the computing on plural rank (tap) with output cancelling out echo signal according to the output of sending entity unit 12.The output of these a plurality of sending entities of 5 bases of near-end crosstalk Canceller unit 12A～12C is carried out the computing on plural rank and is exported the near-end offseting signal.
Mix module 3 and from network data, isolate a plurality of reception data from another communicator 100A.AAGC 21 can do gain adjustment to wherein receiving data, and then the ADC 22 adjusted conversion of signals that will gain again is a digital signal.And subtracter 23 with this digital signal deduction cancelling out echo signal and near-end offseting signal as output, equalizing apparatus 24 is exported equating signal based on the output and the far-end offseting signal of subtracter 23 again, decode for decoding circuit 25, and change for receiving entity unit 26.On the other hand, other receive data can import this a plurality of receiver 2A～2C into, and this far-end crosstalk Canceller 6 can be subjected to determining device 243A～C control of these a plurality of receiver 2A～2C and produce this far-end offseting signal with plural exponent arithmetic(al).
In equalizing apparatus 24, feedforward eqalizing cricuit 241 receives the output of subtracters 23, and the change processing such as feedovers according to this and produce feed-forward signal.First subtrator 244 with feed-forward signal deduct the far-end offseting signal with from the output of feedback equalization device 242, pick out equating signal for determining device 243.And feedback equalization device 242 is based on equating signal to carry out the feedback equalization processing and produces output.Wherein, it is the computing on plural rank all that feedforward/feedback equalization is handled, and is known by the persond having ordinary knowledge in the technical field of the present invention, does not repeat them here.
In order to realize data interchange with lowest power consumption, communicator 100 is satisfied the executive communication method, and it recently understands present communication quality by the noise that control circuit 7 calculates equalizing apparatus 24, and then the Adjustment System operating state.The mode of asking for of signal to noise ratio is: second subtrator 245 can calculate difference before and after the distinguishing of determining devices 243.Control circuit 7 is tried to achieve the signal to noise ratio of equalizing apparatus 24 again based on this difference and equating signal.
The model selection order
The previous mode select command is stored in the memory cell (figure does not show) that couples this control circuit 7, and it comprises three kinds of possibilities: " data form ", " grouping importance ", " block length ".
When the model selection order comprised " data form ", control circuit 7 can be checked transmit status index and accepting state index.The transmit status index can show that the transmission data that conveyer 1 is transmitted belong to grouped data or unloaded data; And the reception data that accepting state index meeting display receiver 2 is received belong to grouped data or unloaded data.If belong to grouped data, then the corresponding states index is higher; If belong to unloaded data, then the corresponding states index is on the low side.
When the model selection order comprised " grouping importance ", control circuit 7 can be checked and send importance index and receive importance index.For instance, if for the network data of grouped data is not allow Internet bank's password of makeing mistakes, then corresponding importance index is higher; If grouped data is general vision signal, then corresponding importance index is on the low side.
When the model selection order comprised " block length ", control circuit 7 can be checked and send length index and receive length index.Number of times can increase with block length because transmitting-receiving makes mistakes, so block length is long more, corresponding length index is high more; Block length is short more, and corresponding length index is low more.
It should be noted that each index can divide into a plurality of grades, and the desired communication quality of the high more expression of index grade is high more.And these a plurality of indexs can be to be provided by the interior computer system that has communicator 100, or own from communicator 100.Such as: transmit status index and transmission length index are from sending entity unit 12, and accepting state index and reception length index are from receiving entity unit 26.
For containing various possible model selection orders, this example is to make a general reference transmit status index, transmission importance index, send length index to send index; And make a general reference the accepting state index to receive index, receive importance index, receive length index.In addition, concerning each possible model selection order, send index and only can reflect the transmission data that conveyer 1 is transmitted, receive index and only can reflect the reception data that receiver 2 is received, therefore, must there be relation of equality in two indexes.
Adjust operative scenario
When communicator 100, when 100A exchanges grouped data,, often need expend the more high-power communication quality that promotes in order to ensure accurately receiving data.But, when transmission/reception index is on the low side,,, make the communication quality of keeping in touch between communicator 100,100A as long as can keep so also just do not need too consumed power because can allow relatively poor signal to noise ratio.
If it is on the low side to send index, then downgrade the consumed power of conveyer 1.That is to say, downgrade reference voltage and reduce the transmitting power of DAC 11 and downgrade the linearity that reference current reduces DAC 11.
If it is on the low side to receive index, then downgrade the consumed power of receiver 2 and these a plurality of Cancellers 4～6.That is to say, downgrade the linearity that another reference current reduces ADC 22, downgrade the decoding capability (power consumption also will downgrade thereupon) of decoding circuit 25, and downgrade operation rank (tap) number of these a plurality of eqalizing cricuits 241,242 and these a plurality of Cancellers 4～6.Certainly, after adjusting exponent number, certainly will need to upgrade coefficient correlation.And in another embodiment, also can downgrade power consumption by stopping to upgrade the coefficient of these a plurality of eqalizing cricuits 241,242 and these a plurality of Cancellers 4～6.And in another embodiment, only can stop to upgrade the exponent number or the coefficient of these a plurality of eqalizing cricuits 241,242 and FEXT Canceller 6.
Certainly, if control circuit 7 imposes and aforementioned opposite operation, just can increase the consumed power of each circuit.Just increasing reference voltage increases the transmitting power of DAC 11 and increases the linearity that reference current is strengthened DAC 11; Increase another reference current and strengthen the linearity of ADC 22, increase the decoding capability (power consumption also will increase thereupon) of decoding circuit 25, and increase the exponent number of these a plurality of eqalizing cricuits 241,242 and these a plurality of Cancellers 4～6.
In addition, the persond having ordinary knowledge in the technical field of the present invention knows mostly: for being the decoding circuit 25 of Viterbi (Viterbi) decoder, can recalling (trace back) length by increasing and promote decoding capability; For the decoding circuit 25 that is low density parity check sign indicating number (LDPC) decoder, can promote decoding capability by increasing iteration (iteration) number of times; And, can adopt lowest mean square algorithm (LMS), recursive least square modes such as (RLS) to come update coefficients and change exponent number for these a plurality of eqalizing cricuits 241,242 and this a plurality of Cancellers 4～6.
With reference to Fig. 2, the flow process that control circuit 7 is adjusted consumed power is as follows:
Step 81: control circuit 7 goes out needed communication quality according to transmission/reception index evaluation, and then determine first reference value and be higher than second reference value of first reference value, in the present embodiment, the pass of this first and second reference value and transmission/reception index is default, for example after transmission/reception refers to the target value decision, this first and second reference value is corresponding decision, the realization of this preset relation can but be not limited to implement with lookup table circuit (look-up table).In addition, in the present embodiment, the required communication quality that is gone out by these a plurality of index evaluations is high more, and first reference value is also high more.
Step 82: ask for mode according to the aforementioned signal to noise ratio of mentioning, try to achieve the signal to noise ratio of these a plurality of receivers 2,2A～2C, and therefrom select the poorest person.
Step 83: judge that whether the signal to noise ratio of selecting is less than first reference value (promptly not being inconsistent the unification term of reference).If jump to step 84; If not, jump to step 85.
Step 84: this moment signal to noise ratio less than first reference value, show that each circuit does not work in too high condition, so uncomfortable full employment situation and jump to step 88.
Step 85: this moment, signal to noise ratio was not less than first reference value, showed that each circuit can meet desired communication quality or reach predetermined usefulness under this condition of work, downgrade consumed power so can try to adjust operative scenario.And adjusting range is decided on the gap of the signal to noise ratio selected and first reference value or according to the fixing range of decrease.
Step 86: judge that whether the signal to noise ratio of selecting is less than second reference value.If jump to step 87; If not, rebound step 85.
Step 87: signal to noise ratio may meet the communication quality that requires though show each circuit less than second reference value under this condition of work at this moment, and usefulness may be not enough to effectively guarantee high communication quality, increases consumed power so adjust operative scenario.And adjusting range is decided on the gap of the signal to noise ratio selected and second reference value or according to fixing increasing degree.
Step 88: finish.
In the present embodiment, when the model selection order comprised " grouping importance ", if it is on the low side to send importance index, then control circuit 7 can be according to the judgement of aforementioned signal to noise ratio and the consumed power that set-up procedure downgrades conveyer 1.If it is on the low side to receive importance index, then control circuit 7 can be complied with the judgement of aforementioned signal to noise ratio and the consumed power that set-up procedure downgrade receiver 2 and these a plurality of Cancellers 4～6, but present embodiment is to avoid the big coefficient that causes restraining again FEXT Canceller 6 and these a plurality of eqalizing cricuits 241,242 of communicator 100 influences, can not change the exponent number of FEXT Canceller 6 and these a plurality of eqalizing cricuits 241,242, so this is not a limitation of the present invention.
And when the model selection order comprises " block length ", for avoiding dividing into groups to receive and dispatch the wrong re-transmission frequency range waste that is caused, control circuit 7 also can increase power consumption with the same manner according to transmission/reception length index when grouping is grown (high target), and when grouping short (low index), reduce power consumption, and can not change the exponent number of FEXT Canceller 6 and these a plurality of eqalizing cricuits 241,242.Though it should be noted that above stated specification is is example with the signal to noise ratio, also can make control circuit 7 calculate the foundation that bit error rate (BER) is adjusted as power, or arbitrary communication quality of representing receiver 2 interrogated index.And control circuit 7 is not limited to above-mentioned in order to the node of asking for signal to noise ratio, as long as can reflect the node of present communication quality.
And it should be noted that and consult above stated specification, the communicator 100 of the consumed power adjusted of previous embodiment is the Ethernet communicator of adjustable consumption reduction power, and control circuit 7 is that power is adjusted control circuit.And the rule that control circuit 7 is judged these transmission and/or received data be following three at least one of them:
Whether first rule meets the unloaded data of the Ethernet communication protocol of IEEE 802.3 standard criterions;
Second rule, whether corresponding importance index falls within pre-set interval; And
Second rule, whether corresponding length index falls within pre-set interval.
After control circuit 7 had been judged this transmission and/or received the characteristic of data, whether decision adjusted the consumed power of communicator 100 again.
In sum, the control circuit 7 of communicator 100 of the present invention can determine desired communication quality with the content of network data, and by judging that the communication quality whether signal to noise ratio meets expectation dynamically adjusts each circuit working situation, can effectively reduce consumed power, so can reach purpose of the present invention really.
The above person of thought, only be the preferred embodiments of the present invention, when not limiting scope of the invention process with this, promptly the simple equivalent of being done according to the present patent application claim and invention description content generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.
Claims (16)
1. the Ethernet communicator of an adjustable consumption reduction power is used for transmitting data and receives data, comprises:
Conveyer is used for transmitting this transmission data;
Receiver is used for receiving this reception data; And
Power downgrades control circuit, be used for judging this transmission and/or receive whether data are the unloaded data that meet the Ethernet communication protocol, and when judging that this transmission and/or reception data meet the unloaded data of Ethernet communication protocol for this, downgrade the power consumption of this conveyer and/or receiver.
2. device as claimed in claim 1, wherein this power downgrades control circuit when judging these transmission data for these zero load data, downgrades the power consumption of the analog circuit of this conveyer.
3. device as claimed in claim 1, wherein this power downgrades control circuit when judging these reception data for these zero load data, downgrades the power consumption of the decoding circuit of this receiver.
4. device as claimed in claim 1, wherein this power downgrades control circuit when judging that these receptions data are these zero load data, stops to upgrade the coefficient of the digital circuit at least of this receiver, so that downgrade the power consumption of this receiver.
5. device as claimed in claim 1, wherein this power downgrades control circuit when judging these reception data for these zero load data, reduces the near-end crosstalk Canceller of this receiver or the operation exponent number of echo neutralizer, so that downgrade the power consumption of this receiver.
6. device as claimed in claim 1, wherein this Ethernet communication protocol meets IEEE 802.3 standard criterions.
7. the Ethernet communicator of an adjustable consumption reduction power is used for transmitting data and receives data, comprises:
Conveyer is used for transmitting this transmission data;
Receiver is used for receiving this reception data; And
Power downgrades control circuit, be used for judging this transmission and/or receive the pairing importance index of data and whether fall within pre-set interval, and when this importance index of judging this transmission and/or reception data falls within this pre-set interval, downgrade the power consumption of this conveyer and/or receiver.
8. device as claimed in claim 7, wherein this power downgrades control circuit when this importance index of judging these transmission data falls within this pre-set interval, downgrades the power consumption of the analog circuit of this conveyer.
9. device as claimed in claim 7, wherein this power downgrades control circuit when this importance index of judging these reception data falls within this pre-set interval, downgrades the power consumption of the decoding circuit of this receiver.
10. device as claimed in claim 7, wherein this power downgrades control circuit when this importance index of judging these reception data falls within this pre-set interval, stops to upgrade the coefficient of the digital circuit at least of this receiver, so that downgrade the power consumption of this receiver.
11. as claim 7 a described device, wherein this power downgrades control circuit when this importance index of judging these reception data falls within this pre-set interval, reduce the near-end crosstalk Canceller of this receiver or the operation exponent number of echo neutralizer, so that downgrade the power consumption of this receiver.
12. the Ethernet communicator of an adjustable consumption reduction power is used for transmitting data and receives data, comprises:
Conveyer is used for transmitting this transmission data;
Receiver is used for receiving this reception data; And
Power downgrades control circuit, be used for judging this transmission and/or receive the pairing length index of data and whether fall within pre-set interval, and when this length index of judging this transmission and/or reception data falls within this pre-set interval, downgrade the power consumption of this conveyer and/or receiver.
13. device as claimed in claim 12, wherein this power downgrades control circuit when this length index of judging these transmission data falls within this pre-set interval, downgrades the power consumption of the analog circuit of this conveyer.
14. device as claimed in claim 12, wherein this power downgrades control circuit when this length index of judging these reception data falls within this pre-set interval, downgrades the power consumption of the decoding circuit of this receiver.
15. device as claimed in claim 12, wherein this power downgrades control circuit when this length index of judging these reception data falls within this pre-set interval, stops to upgrade the coefficient of the digital circuit at least of this receiver, so that downgrade the power consumption of this receiver.
16. as device as described in the claim 12, wherein this power downgrades control circuit when this length index of judging these reception data falls within this pre-set interval, reduce the near-end crosstalk Canceller of this receiver or the operation exponent number of echo neutralizer, so that downgrade the power consumption of this receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910002400A CN101777961A (en) | 2009-01-12 | 2009-01-12 | Communication device capable of adjusting consumption power, method thereof and Ethernet communication device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910002400A CN101777961A (en) | 2009-01-12 | 2009-01-12 | Communication device capable of adjusting consumption power, method thereof and Ethernet communication device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546231A (en) * | 2010-11-29 | 2012-07-04 | 瑞昱半导体股份有限公司 | Network device and method for supporting power saving mechanism by automatic negotiation mechanism |
| CN105379134A (en) * | 2014-04-30 | 2016-03-02 | 华为技术有限公司 | Method and apparatus for transmitting signal in wireless communication system |
| CN111756392A (en) * | 2019-03-26 | 2020-10-09 | 创发信息科技（苏州）有限公司 | Radio frequency interference detection and elimination system applied to Ethernet |
-
2009
- 2009-01-12 CN CN200910002400A patent/CN101777961A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546231A (en) * | 2010-11-29 | 2012-07-04 | 瑞昱半导体股份有限公司 | Network device and method for supporting power saving mechanism by automatic negotiation mechanism |
| CN102546231B (en) * | 2010-11-29 | 2015-01-28 | 瑞昱半导体股份有限公司 | Network device and method for supporting power saving mechanism by automatic negotiation mechanism |
| CN105379134A (en) * | 2014-04-30 | 2016-03-02 | 华为技术有限公司 | Method and apparatus for transmitting signal in wireless communication system |
| CN105379134B (en) * | 2014-04-30 | 2017-07-21 | 华为技术有限公司 | The method, apparatus and system of circuit crosstalk are offset in a kind of DSL system |
| US10033432B2 (en) | 2014-04-30 | 2018-07-24 | Huawei Technologies Co., Ltd. | Method, device, and system for canceling crosstalk between lines in DSL system |
| CN111756392A (en) * | 2019-03-26 | 2020-10-09 | 创发信息科技（苏州）有限公司 | Radio frequency interference detection and elimination system applied to Ethernet |
| CN111756392B (en) * | 2019-03-26 | 2022-04-01 | 达发科技(苏州)有限公司 | Radio frequency interference detection and elimination system applied to Ethernet |
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