CN1996822B - A processing method and system for feedback signals - Google Patents
A processing method and system for feedback signals Download PDFInfo
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- CN1996822B CN1996822B CN2006100867765A CN200610086776A CN1996822B CN 1996822 B CN1996822 B CN 1996822B CN 2006100867765 A CN2006100867765 A CN 2006100867765A CN 200610086776 A CN200610086776 A CN 200610086776A CN 1996822 B CN1996822 B CN 1996822B
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- signal
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- confirming
- answer signal
- feedback signal
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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
This invention discloses one method to process feedback signals, which comprises the following steps: receiver part generates feedback signals by sent data; receiver adds front onto feedback signals according to set rules and priority; the receiver sends feedback signals with front. This invention also discloses one system to process feedback signals to lower needed emission power by receiver through improving feedback signals accuracy.
Description
Technical field
The present invention relates to a kind of communication technology, relate in particular to a kind of method and system of handling feedback signal.
Background technology
In WCDMA (Wideband Code Division Multiple Access (WCDMA) access) system, adopt HARQ (mixing automatic repeat requests) technology can improve the throughput of grouped data effectively, promptly, data for the transmit leg transmission, the recipient will be according to reception condition, respectively to transmit leg feeding back ACK (affirmation is replied), NACK (not confirming to reply) or DTX (no response) signal.Wherein, ACK represents that Data Receiving is correct; NACK represents the Data Receiving mistake; DTX represents not receive data.Transmit leg determines whether to retransmit by detecting recipient's feedback signal then.
In the prior art, transmit leg is in order to come ACK, NACK and DTX signal distinguishing, and the recipient needs bigger transmitting power with the emission feedback signal.
Can distinguish ACK, NACK and DTX signal in order to make transmit leg, and reduce the transmitting power that the recipient launches feedback signal, a kind of improving one's methods arranged at present, promptly when feeding back ACK or NACK, in several feedback signals (as at a plurality of ACK or a plurality of NACK) additional before 1 or 2 prefixes (PRE), at several feedback signals (as at a plurality of ACK or a plurality of NACK) additional afterwards 1 or 2 suffix (POST).Like this, after transmit leg receives recipient's feedback signal, can increase the judgement precision of feedback signal by prefix and suffix.At this moment, not influencing under the situation of precision of feedback signal that transmit leg detects the recipient, can suitably reduce recipient's transmitting power.
Yet, because this improving one's methods needs to increase prefix and suffix, need increase the excess power that sends PRE and these two signals of POST the recipient, need increase at transmit leg and detect PRE and these two signals of POST; Therefore, all to increase the implementation complexity of hardware transmit leg and recipient; In addition, owing to increase suffix, increased the time-delay of ACK or NACK Signal Processing, base is to having exceeded system's acceptable scope.Also can cause interference in addition because of increasing transmitting power to eating dishes without rice or wine.
Summary of the invention
The purpose of this invention is to provide a kind of method and system of handling feedback signal, can improve the accuracy that transmit leg detects recipient's feedback signal, thereby can reduce the recipient for sending the feedback signal desired power.
The invention provides a kind of method of handling feedback signal, comprising:
A, recipient generate feedback signal according to the data that transmit leg sends, and described feedback signal comprises the affirmation answer signal, do not confirm answer signal and no response signal;
B, recipient added prefix before described feedback signal, when the number of repetition of confirming answer signal or not confirming answer signal is n, add 2 prefixes, described n 〉=2 at this n affirmation answer signal or before not confirming answer signal; When the number of repetition of confirming answer signal or not confirming answer signal is 1, before confirming answer signal or not confirming answer signal, add 1 prefix;
C, receive direction transmit leg send described prefix and described feedback signal, when feedback signal and prefix on same position, occurring and need send, by confirming that answer signal=the do not confirm priority order of answer signal＞prefix＞no response signal selects higher feedback signal of a priority or prefix to send.
Also carry out after execution in step C: transmit leg detects described prefix and described feedback signal.
Described affirmation answer signal, do not confirm that answer signal, prefix and no response signal are orthogonal in twos.
The present invention also discloses a kind of system that handles feedback signal, comprising:
Transmit leg is used for sending data to the recipient, and receives prefix and feedback signal that the recipient sends, and described feedback signal comprises the affirmation answer signal, do not confirm answer signal and no response signal;
The recipient, the data that are used for sending according to transmit leg generate feedback signal, and add prefix before feedback signal, when the number of repetition of confirming answer signal or not confirming answer signal is n, add 2 prefixes, described n 〉=2 at this n affirmation answer signal or before not confirming answer signal; When the number of repetition of confirming answer signal or not confirming answer signal is 1, before confirming answer signal or not confirming answer signal, add 1 prefix, then described prefix and described feedback signal are issued transmit leg, when feedback signal and prefix on same position, occurring and need send, by confirming that answer signal=the do not confirm priority order of answer signal＞prefix＞no response signal selects higher feedback signal of a priority or prefix to send.
Described transmit leg comprises:
Transmitting element is used for sending data to the recipient;
Receiving element is used to receive prefix and the feedback signal that the recipient sends;
Detecting unit is used to detect described prefix and the described feedback signal that described receiving element receives.
Described recipient comprises:
Receiving element is used to receive the data that transmit leg sends;
Generation unit, the data that are used for receiving according to receiving element generate feedback signal;
The prefix adding device is used for adding prefix before feedback signal, when the number of repetition of confirming answer signal or not confirming answer signal is n, add 2 prefixes, described n 〉=2 at this n affirmation answer signal or before not confirming answer signal; When the number of repetition of confirming answer signal or not confirming answer signal is 1, before confirming answer signal or not confirming answer signal, add 1 prefix;
Transmitting element, be used for prefix and feedback signal that the prefix adding device generates are issued transmit leg, when feedback signal and prefix on same position, occurring and need send, by confirming that answer signal=the do not confirm priority order of answer signal＞prefix＞no response signal selects higher feedback signal of a priority or prefix to send.
According to the present invention, by on feedback signal, only using prefix, both, can reduce the required transmitting power of recipient effectively by improving the precision of feedback signal, simultaneously be not easy to realization because of there being suffix to become again, thereby eliminated the interference that the waste because of transmitting power causes eating dishes without rice or wine.
Description of drawings
It is 1 situation that Fig. 1 shows the ACK number of repetition;
It is 3 situation that Fig. 2 shows the ACK number of repetition;
Fig. 3 shows the schematic diagram of processing feedback signal of the present invention system.
Embodiment
Understand and realization the present invention the existing embodiments of the invention of describing in conjunction with the accompanying drawings for the ease of persons skilled in the art.
According to the present invention, for the data that transmit leg sends, whether the recipient will be according to correctly receiving, respectively to transmit leg feeding back ACK or NACK signal; If do not receive data, then to transmit leg feedback DTX signal (what is equivalent to does not send).Wherein when feeding back ACK or NACK,, then before this ACK or NACK, add 1 prefix, and after ACK or NACK, do not send suffix if ACK or NACK number of repetition are 1; If ACK or NACK number of repetition are n (n＞=2), then before this n ACK that repeats or NACK, add 2 prefixes, and after ACK or NACK, do not send suffix.If on same position, there are a plurality of signals (as ACK, NACK, PRE or DTX) to be sent out, will from each signal, select transmission: an ACK=NACK＞PRE＞DTX by following priority.Be that ACK is identical with NACK priority, the priority of ACK and NACK is greater than the priority of prefix, and the priority of prefix is greater than unresponsive priority.
It is 1 situation that Fig. 1 shows the ACK number of repetition, and when the sending direction recipient sent n packet, according to the present invention, the recipient need add 1 prefix before feedback signal ACK.
It is 3 situation that Fig. 2 shows the ACK number of repetition, and when the sending direction recipient sent n packet, according to the present invention, the recipient need add 2 prefixes before feedback signal ACK.When the sending direction recipient sent n+1 packet, according to the present invention, the recipient need add 2 prefixes before feedback signal ACK.Yet, because n+1 relative n the packet of packet is to send continuously, so the feedback signal of n+1 packet and the feedback signal of n packet are also answered continuous feedback, therefore, on n+1 and n+2 position, can send two kinds of feedback signal: ACK and prefix signal.According to aforesaid priority rule, on n+1 and n+2 position, should select ack signal to send.
For the ease of the detection of transmit leg to feedback signal, feedback signal ACK of the present invention, NACK, DTX and prefix (PRE) have orthogonality in twos each other.
Be 1 to be the testing process that example illustrates transmit leg with the ACK/NACK number of repetition now, transmit leg can be done as a whole the detection with the signal combination of ACK or NACK and PRE part.ACK/NACK occurs because PRE invariably accompanies, and the priority that signal sends provides, and therefore all possible signal combination is as follows:
n-1 n
ACK+ACK
ACK+NACK
ACK+PRE
ACK+DTX
NACK+ACK
NACK+NACK
NACK+PRE
NACK+DTX
PRE+ACK
PRE+NACK
DTX+PRE
DTX+DTX
Transmit leg can detect the feedback signal of reception by detection method according to above-mentioned signal combination, as adopting multiplication rule, makes up as the feedback signal that receives so that determine a kind of of correlation maximum.
As shown in Figure 3, the present invention also discloses a kind of system that handles feedback signal, and described system comprises: transmit leg is used for sending data to the recipient, and receives the feedback signal that has prefix that the recipient sends, and detects the feedback signal that has prefix; The recipient, the data that are used for sending according to transmit leg generate feedback signal, and add prefix according to pre-defined rule and priority rule before feedback signal, and the feedback signal that will have prefix is then issued transmit leg.Described pre-defined rule is: when the number of repetition of confirming answer signal or not confirming answer signal is at least 2, added 2 prefixes before confirming answer signal or not confirming answer signal; When the number of repetition of confirming answer signal or not confirming answer signal is 1, before confirming answer signal or not confirming answer signal, add 1 prefix.Described priority rule is following order: confirm answer signal=do not confirm answer signal＞prefix＞no response signal.When feedback signal and prefix occurring need send on same position, according to priority principle is selected the higher feedback signal of a priority.
Described transmit leg comprises: transmitting element is used for sending data to the recipient; Receiving element is used to receive the feedback signal that has prefix that the recipient sends; Detecting unit is used to detect the feedback signal that has prefix that described receiving element receives.
Described recipient comprises: receiving element is used to receive the data that transmit leg sends; Generation unit, the data that are used for receiving according to receiving element generate feedback signal; The prefix adding device is used for adding prefix before feedback signal; Transmitting element is used for the feedback signal that has prefix that the prefix adding device generates is issued transmit leg.
According to the present invention, by on feedback signal, only using prefix, both, can reduce the required transmitting power of recipient effectively by improving the precision of feedback signal, simultaneously be not easy to realization because of there being suffix to become again, thereby eliminated the interference that the waste because of transmitting power causes eating dishes without rice or wine.
Though described the present invention by embodiment, those of ordinary skills know, without departing from the spirit and substance in the present invention, just can make the present invention that many distortion and variation are arranged, and scope of the present invention is limited to the appended claims.
Claims (6)
1. a method of handling feedback signal is characterized in that, comprising:
A, recipient generate feedback signal according to the data that transmit leg sends, and described feedback signal comprises the affirmation answer signal, do not confirm answer signal and no response signal;
B, recipient added prefix before described feedback signal, when the number of repetition of confirming answer signal or not confirming answer signal is n, add 2 prefixes, described n 〉=2 at this n affirmation answer signal or before not confirming answer signal; When the number of repetition of confirming answer signal or not confirming answer signal is 1, before confirming answer signal or not confirming answer signal, add 1 prefix;
C, receive direction transmit leg send described prefix and described feedback signal, when feedback signal and prefix on same position, occurring and need send, by confirming that answer signal=the do not confirm priority order of answer signal＞prefix＞no response signal selects higher feedback signal of a priority or prefix to send.
2. the method for processing feedback signal according to claim 1 is characterized in that, also carry out after execution in step C: transmit leg detects described prefix and described feedback signal.
3. the method for processing feedback signal according to claim 1 is characterized in that, described affirmation answer signal, does not confirm that answer signal, prefix and no response signal are orthogonal in twos.
4. a system that handles feedback signal is characterized in that, comprising:
Transmit leg is used for sending data to the recipient, and receives prefix and feedback signal that the recipient sends, and described feedback signal comprises the affirmation answer signal, do not confirm answer signal and no response signal;
The recipient, the data that are used for sending according to transmit leg generate feedback signal, and add prefix before feedback signal, when the number of repetition of confirming answer signal or not confirming answer signal is n, add 2 prefixes, described n 〉=2 at this n affirmation answer signal or before not confirming answer signal; When the number of repetition of confirming answer signal or not confirming answer signal is 1, before confirming answer signal or not confirming answer signal, add 1 prefix, then described prefix and described feedback signal are issued transmit leg, when feedback signal and prefix on same position, occurring and need send, by confirming that answer signal=the do not confirm priority order of answer signal＞prefix＞no response signal selects higher feedback signal of a priority or prefix to send.
5. the system of processing feedback signal according to claim 4 is characterized in that, described transmit leg comprises:
Transmitting element is used for sending data to the recipient;
Receiving element is used to receive prefix and the feedback signal that the recipient sends;
Detecting unit is used to detect described prefix and the described feedback signal that described receiving element receives.
6. according to the system of claim 4 or 5 described processing feedback signals, it is characterized in that described recipient comprises:
Receiving element is used to receive the data that transmit leg sends;
Generation unit, the data that are used for receiving according to receiving element generate feedback signal;
The prefix adding device is used for adding prefix before feedback signal, when the number of repetition of confirming answer signal or not confirming answer signal is n, add 2 prefixes, described n 〉=2 at this n affirmation answer signal or before not confirming answer signal; When the number of repetition of confirming answer signal or not confirming answer signal is 1, before confirming answer signal or not confirming answer signal, add 1 prefix;
Transmitting element, be used for prefix and feedback signal that the prefix adding device generates are issued transmit leg, when feedback signal and prefix on same position, occurring and need send, by confirming that answer signal=the do not confirm priority order of answer signal＞prefix＞no response signal selects higher feedback signal of a priority or prefix to send.
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| CN2006100867765A CN1996822B (en) | 2006-06-26 | 2006-06-26 | A processing method and system for feedback signals |
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| CN2006100867765A CN1996822B (en) | 2006-06-26 | 2006-06-26 | A processing method and system for feedback signals |
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| CN1996822B true CN1996822B (en) | 2011-06-22 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1463097A (en) * | 2003-05-13 | 2003-12-24 | 武汉汉网高技术有限公司 | Random access method utilized in orthographic frequency division multiple access (OFDM) system |
| CN1182738C (en) * | 2001-09-03 | 2004-12-29 | 三星电子株式会社 | Communication system and method with raised communication efficiency |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182738C (en) * | 2001-09-03 | 2004-12-29 | 三星电子株式会社 | Communication system and method with raised communication efficiency |
| CN1463097A (en) * | 2003-05-13 | 2003-12-24 | 武汉汉网高技术有限公司 | Random access method utilized in orthographic frequency division multiple access (OFDM) system |
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