CN1230824A - Acknowledgment message receiving method - Google Patents
Acknowledgment message receiving method Download PDFInfo
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- CN1230824A CN1230824A CN 98101301 CN98101301A CN1230824A CN 1230824 A CN1230824 A CN 1230824A CN 98101301 CN98101301 CN 98101301 CN 98101301 A CN98101301 A CN 98101301A CN 1230824 A CN1230824 A CN 1230824A
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- 238000000034 method Methods 0.000 title claims description 20
- 238000012937 correction Methods 0.000 abstract description 17
- 230000008878 coupling Effects 0.000 description 14
- 238000010168 coupling process Methods 0.000 description 14
- 238000005859 coupling reaction Methods 0.000 description 14
- 238000004891 communication Methods 0.000 description 9
- 238000012790 confirmation Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- 239000000284 extract Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
在作为一下行控制－信道的一字被重复接收五次的结果而所获得的字中,如果首先获得的三个字在所有位中变为相互匹配。不再进一步接收该字。这样匹配的这些字被经过纠错操作,以使产生一接收的信息。如果这些字之间无匹配,该字被接收五次,这样接收的五个字被进行一多数决定操作,从而选择一字。该字被纠错以产生一接收的信息。
Among the words obtained as a result of one word of the downstream control-channel being repeatedly received five times, if the first three words obtained become mutually matched in all bits. The word is not received any further. The words thus matched are subjected to an error correction operation so as to produce a received message. If there is no match between the words, the word is received five times so that the five received words are subjected to a majority decision operation to select a word. The word is error corrected to produce a received message.
Description
In field of portable cellular phones according to advanced person's mobile telephone service (AMPS) or Japanese total access communication system (JTACS), the present invention relates to a kind of method, travelling carriage is received from the down control channel data that a base station sends to this travelling carriage by this method.
Under the situation of the portable cell phone system that adopts the JTACS scheme of stipulating by " the automatic mobile telephone system standard of simulation TACS-scheme RCR STD-36 " (formulating on October 29th, 1993) by wireless system development centre (Current Radio Industry Institute), this travelling carriage receives the relevant down control channel that a base station sends one during waiting, and receives to enter call information or stand for example broadband traffic of another control operation of a conversion operations.
As shown in Figure 4, travelling carriage (a for example portable cell phone) comprises a reception area 1, a sending area 2, Control on Communication district/Audio Signal Processing district 3, a receiver 4, a transmitter 5, a display 6 and keyboard 7.In being in the travelling carriage of waiting state, 1 pair of radio wave that sends from this base station of reception area carries out demodulation, and the control channel information that Control on Communication district 3 extracts in the signal that is included in this reception.Realize Control on Communication operation according to this information instruction.This down control channel information includes this base station and waits the information of the travelling carriage in the state according to it.More specifically, these information purposes are to register the position of this travelling carriage, control the operation of this travelling carriage, or notify this travelling carriage one to enter calling.
This descending control-channel is corresponding to a data flow position, and this data flow position is that the speed with 8000 ± 0.1 bps is sent out and comprises a form for example shown in Figure 1.Each descending control-channel comprises three independent data stream; Be data flow A, data stream B and vacant/occupy data flow, this three data flow is all by time division multiplexing.This travelling carriage only receives one of information of two types, or is data flow A or for data stream B, and these data flow are alternately sent so that each data flow is repeated to send five times.
In receiving data stream A or B, this travelling carriage receives one and includes 40 and be repeated five times word.The word of these receptions is compared on every basis mutually, and makes three or more the words that most decisions have identical value (1 or 0) with selection from these five words.In a word, the final data that form a word from the word of these selections.Then by using an error correcting code that these data are carried out error-correction operation, thereby form an information that receives.
One similar data stream is used at the North America use and portable cell phone that adopt the AMPS scheme.
Receive at travelling carriage during the time period (hereinafter referred to as " time of reception section ") of down control channel information, the receiving circuit of travelling carriage is initiated, consumed power.The time period that travelling carriage is in waiting state is dependent on the degree of energy consumption.For making five times majority decision, travelling carriage must receive the word that all is repeated.Therefore, be difficult to by reducing the waiting time that the time of reception section prolongs travelling carriage.
For solving the above-mentioned problems in the prior art, according to the present invention, when receiving the information of a relevant descending control-channel, travelling carriage repeatedly receives the same word of a relevant descending control-channel.As long as receive the number of times of a given number by travelling carriage, or N-1 or these words still less time become mutual coupling in all positions, and this travelling carriage did not work receiving circuit before receiving this word N time.These words that become mutual coupling are then by using an error correcting code to be carried out error-correction operation, thereby form an information that receives.In the case, make receiving circuit not work or the data of unanimity are carried out in the operation of error-correction operation, an operation can be implemented before another operation, or two operations can be implemented with cooperating with each other.
And when receiving the information of a relevant descending control-channel, travelling carriage repeats to receive the same word of a relevant descending control-channel.As long as receive the number of times of a given number by travelling carriage, or N-1 or still less time, and become mutual coupling by these words that use an error correcting code to be carried out error-correction operation in all positions, this travelling carriage receives this word does not work receiving circuit before N time.These words that become mutual coupling are processed as an information that receives.
If do not have consistency between these words that repeat to receive, this word is continued to be received until five times.Then to these words carry out-majority decision operation to be obtaining a word, and this word is carried out error-correction operation by using an error correcting code, thereby form an information that receives.
If this pre-determined number is set to three times, if do not become mutual coupling as yet through three words of error-correction operation, these words with as the results of most decisions, those words of selecting from five words are identical.In the place with high field intensity and good condition of acceptance, or have the place of low fading frequency, for example when the user just walks, the mistake in the entire stream becomes less or by concentration of local.As a result, a word is repeated to receive repeatedly and the probability of zero defect can be enhanced.Like this,, just may not need to receive again this same word twice, thereby the average energy consumption of travelling carriage is reduced if three obtained words became mutual coupling before this same word is obtained five times as repeating to receive the result of three same words.As a result, the waiting time of travelling carriage can be extended.
Even this pre-determined number is set to twice, if this two word is through becoming mutual coupling before the error-correction operation, the danger that produces mistake at the same position of two words is considered to very little.Therefore, the error rate of these words of process error-correction operation significantly reduces, and the time of reception section of this travelling carriage can be reduced.
Fig. 1 one is used for the form of data flow of a descending control-channel of the automatic mobile telephone system of JTACS-scheme;
Fig. 2 is the flow chart according to a confirmation method of reseptance of the first embodiment of the present invention;
Fig. 3 is the flow chart according to a confirmation method of reseptance of the first embodiment of the present invention;
Fig. 4 is the block diagram of formation of a travelling carriage of a portable cell phone system.
(embodiment 1)
Get a portable cell phone according to the JTACS scheme as an example, below will describe a confirmation method of reseptance according to the first embodiment of the present invention.Because the AMPS scheme also adopts the data flow with an identical relevant descending control-channel that is used for JTACS, this confirmation reception programme can be used to the portable cell phone according to the AMPS scheme.Present embodiment relates to treats the software handled by a Control on Communication district, as under the situation of the travelling carriage of a portable cell phone system shown in Figure 4.This Control on Communication district comprise be used to store this software and various data relevant with this software of execution-memory block.The hardware configuration of this memory block can be realized by known technology.Therefore for for purpose of brevity, save detailed icon and explanation to them at this.
Fig. 1 shows the form about a data flow of the descending control-channel of the automatic mobile telephone system of a JTACS-scheme, and Fig. 2 shows the flow chart according to the affirmation message receiving method of the first embodiment of the present invention.
The reception of the information of a relevant descending control-channel is implemented in the following manner.
At first (in step 1), a bit synchronization mode (1010101010) is detected and is carried out bit synchronization from a data flow, and a word method of synchronization (111000110010) is detected.
Detect word synchronously after, begin to read and follow this word data in synchronization stream A or B.According to a predetermined flag, make determining with reading data flow A or B.
Each word includes 40 and be repeated to send five times.When this word is at first received three times (step 2), the word of these receptions is compared (step 3) bit by bit mutually.All mating mutually in the position if these three words become, a word that is shown by these word tables is carried out error-correction operation (step 4) by use-error correcting code.This word through error correction is processed as an information that receives, and makes a receiving circuit (step 5) of not working.As a result, this word no longer is received until five times.By using at the line shown in Fig. 4, carry out the receiving circuit work/do not work of making by symbol " a " expression.Can choose at random the handling procedure of step 4 and 5.In brief, this flow graph can be changed so that the processing operation that the processing of execution in step 5 or execution in step 4 and 5 are cooperated with each other before step 4.
If at first received three times result as this word, there is not coupling between these words of acquisition, this word will be continued to receive until five (step 6).Altogether five words be carried out bit by bit most decisions (step 7), thus obtain a word.(step 8) is so that finally obtain an information that receives by using an error correcting code that one word of such acquisition is carried out error-correction operation.
Although in first embodiment, the number of times that this word is initially received is set to three times, it also can be set to twice, if the Control on Communication district correct the ability of the mistake in the information and based on the effect that cuts down the consumption of energy that shortens the time period that receives this information between trade off.
(embodiment 2)
Fig. 3 shows the flow chart of affirmation message receiving method according to a second embodiment of the present invention.
Present embodiment relates to shown in Figure 4 one and is used for treating the software of being handled by a Control on Communication district under the situation of mobile radio station of portable cell phone system.This Control on Communication district comprises that one is used to store the memory block that this software reaches the various data relevant with carrying out this software.The hardware of this memory block constitutes and can realize by known technology, and therefore for for purpose of brevity, saves detailed icon or description to them at this.
The reception of the information of a relevant descending control-channel realizes in the following manner.
At first (, detect a bit synchronization mode (1010101010) and make it stand bit synchronization from a data flow, and a word method of synchronization (11000110010) is detected in step 1).
Detect this word synchronously after, or the beginning read data flow A or the B that follows this word method of synchronization.According to a predetermined flag, specified data stream A or B will be read.
Each word includes 40 and repeatedly sent five times.When this word is at first received three times (step 2), the word of these receptions is carried out error-correction operation (step 3) by using an error correcting code.After this, these are compared (step 4) bit by bit mutually by the word of error correction.If these words become mutual coupling in all positions, make the receiving circuit (step 5) of not working.This word no longer is received until five times.Processed by this word that the word table of these couplings shows as an information that receives.By using a line of representing by symbol " a " among Fig. 4, the work of execution receiving circuit/do not work.
If at first received three times result as this word, there is not coupling between these words of acquisition, this word will be continued to receive until five (step 6).Altogether five words be carried out bit by bit most decisions (step 7), thus obtain a word.(step 8) is so that finally obtain an information that receives by using an error correcting code that one word of such acquisition is carried out error-correction operation.
As previously discussed, for the data of a descending control-channel of the portable cell phone that adopts AMPS or JTACS scheme, same word is repeated to send five times.Substitute all numbers of words and be received, have only a part in whole numbers of words by actual reception, and for the received time period of other number of words, a receiving circuit is made not work, thereby cause the energy consumption of travelling carriage to reduce.As a result, the waiting time of travelling carriage can correspondingly be prolonged.Only when three words that at first receive became mutual coupling in all positions, these words were processed as the word that receives, thereby prevented the reception of other number of words.Therefore, the average received time period of travelling carriage can be shortened.
In first embodiment, if the word that the result obtained that is at first received three times as a word becomes mutual coupling in all positions, can be sure of to obtain and the identical error correcting capability that obtains in this case: the word that is obtained that is received five times result as a word is carried out a majority decision operation on every basis.
In a second embodiment, the error correction with the word by five receptions produces the danger of Different Results, thereby causes the slight weakening of error correcting capability.Yet, comparing with first embodiment, second embodiment provides in the high possibility that is carried out generation coupling between three words that at first receive of error correction, and has further shortened section average time of the information that receives.
Because by above-mentioned formation, the ratio of the operating time of receiving circuit can be reduced fifty-fifty, can realize that energy consumption reduces and the prolongation of waiting time.
In the above-described embodiment, the reception number of times of this word for example is described to five times.But the reception number of times of this word is not restricted to five times, and it can be another number in the present invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98101301 CN1230824A (en) | 1998-03-31 | 1998-03-31 | Acknowledgment message receiving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98101301 CN1230824A (en) | 1998-03-31 | 1998-03-31 | Acknowledgment message receiving method |
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|---|---|
| CN1230824A true CN1230824A (en) | 1999-10-06 |
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| CN 98101301 Pending CN1230824A (en) | 1998-03-31 | 1998-03-31 | Acknowledgment message receiving method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110138254A1 (en) * | 2009-12-08 | 2011-06-09 | Tsung-Chieh Yang | Method for reducing uncorrectable errors of a memory device regarding error correction code, and associated memory device and controller thereof |
| CN102141944B (en) * | 2010-02-02 | 2012-12-12 | 慧荣科技股份有限公司 | Method for reducing uncorrectable errors and memory device and controller thereof |
| CN112748221A (en) * | 2020-12-30 | 2021-05-04 | 南京汽车集团有限公司 | Method for detecting hydrogen leakage of whole vehicle by using light truck hydrogen fuel cell vehicle |
-
1998
- 1998-03-31 CN CN 98101301 patent/CN1230824A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110138254A1 (en) * | 2009-12-08 | 2011-06-09 | Tsung-Chieh Yang | Method for reducing uncorrectable errors of a memory device regarding error correction code, and associated memory device and controller thereof |
| US8516354B2 (en) | 2009-12-08 | 2013-08-20 | Silicon Motion Inc. | Method for reducing uncorrectable errors of a memory device regarding error correction code, and associated memory device and controller thereof |
| US8631310B2 (en) | 2009-12-08 | 2014-01-14 | Silicon Motion Inc. | Method for reducing uncorrectable errors of a memory device regarding error correction code, and associated memory device and controller thereof |
| CN102141944B (en) * | 2010-02-02 | 2012-12-12 | 慧荣科技股份有限公司 | Method for reducing uncorrectable errors and memory device and controller thereof |
| CN112748221A (en) * | 2020-12-30 | 2021-05-04 | 南京汽车集团有限公司 | Method for detecting hydrogen leakage of whole vehicle by using light truck hydrogen fuel cell vehicle |
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