CN101217348A - Signal detection method, device and system - Google Patents
Signal detection method, device and system Download PDFInfo
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- CN101217348A CN101217348A CNA2008100558277A CN200810055827A CN101217348A CN 101217348 A CN101217348 A CN 101217348A CN A2008100558277 A CNA2008100558277 A CN A2008100558277A CN 200810055827 A CN200810055827 A CN 200810055827A CN 101217348 A CN101217348 A CN 101217348A
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Abstract
Each embodiment of the invention relates to a method, a device and a system for signal detection; wherein, the method comprises: an anterior synchronization signal is added before sending acknowledgment or deny signals and a posterior synchronization signal is added after sending the acknowledgment or deny signals; matching is carried out among a currently received signal and the acknowledgment signal, the deny signal, the anterior synchronization signal as well as the posterior synchronization signal, and retransmission mergence is carried out on the matching result; the prefix signal of the currently received signal is detected and the detection result of the prefix signal is acquired; the signal type of the currently received signal is determined according to at least the detection result of the prefix signal and the retransmission mergence result of the currently received signal, acquiring the detection result of the currently received signal. Each embodiment of the invention can solve the problems that power increasing and DTX are misjudged as the influence brought by the acknowledgment signal in the prior art, reduce the probability of misjudging and improve the accuracy of detection.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of signal detecting method, Apparatus and system.
Background technology
High speed downlink packet inserts the down high-speed data solution that (High Speed Downlink Packet Access is called for short HSDPA) is Wideband Code Division Multiple Access (WCDMA) (Wideband CDMA is called for short WCDMA) system, and flank speed can reach more than the 12M.The HSDPA system comprises the short frame that adopts 2ms, adopts mixed automatic retransmission request (Hybrid Automatic RetransmissionRequest in physical layer, HARQ) and adapt to modulation and coding (Adaptive Modulation and Coding, be called for short AMC) etc. link adaptation techniques, introduce high order modulation and improve the availability of frequency spectrum, and by sign indicating number divide and the time-division at each user terminal (User Equipment, abbreviation UE) flexible dispatching between, thus downstream data rate effectively improved.
The HSDPA system comprises descending High-Speed Shared Control Channel (Shared Control Channelfor HS-DSCH, abbreviation HS-SCCH), high-speed physical downlink shared channel (HS-PDSCH) (High SpeedPhysical Downlink Shared Channel, be called for short HS-PDSCH) and up High-Speed Dedicated Physical Control Channel (Dedicated Physical Control Channel for HS-PDSCH is called for short HS-DPCCH).Wherein the descending letter of HS-SCCH channel bearing is modern, HS-PDSCH channel bearing downlink data, HS-DPCCH channel bearing uplink feedback information.
In the prior art, realize the transmission of descending control signaling and data by Node B (Node B), if UE detects the control information of having carried this UE on certain HS-SCCH that is monitoring, UE begins to receive the HS-PDSCH data under the indication of control information so.After the HS-PDSCH data decode, based on medium access control high-speed layer (HSDPA Media Access Control, abbreviation MAC-hs) cyclic redundancy check (CRC) (Cyclic Redundancy Check, be called for short CRC), UE can send a confirmation signal " ACK " or deny signal " NACK ", and repeats to send in N continuous up feedback HS-DPCCH subframe and confirm/deny signal.Wherein, " ACK " expression is received data and is decoded, " NACK " expression data decode error.
If UE does not detect control information on HS-SCCH, in corresponding HS-DPCCH subframe, neither send so " ACK ", do not send " NACK " yet.When not confirming or deny the signal transmission, UE is in the up discontinuous transmission (Discontinuous Transmission is called for short DTX) of carrying out.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
Up discontinuous transmission (DTX) information may be mistaken for confirmation signal, if and the HS-SCCH data decode is slipped up, packet in physical layer will be dropped, to arrive Radio Link control (RadioLink Control, abbreviation RLC) layer retransmits, if Node B for confirmation signal " ACK ", can not carry out data re-transmission with the DTX erroneous judgement.
Summary of the invention
Embodiment of the invention technical problem to be solved is to provide a kind of signal detecting method, Apparatus and system, in order to reduce the probability that DTX is mistaken for " ACK ", improves the accuracy of input.
In order to realize the embodiment of the invention, the embodiment of the invention provides a kind of signal detecting method, comprising:
Before sending one or more affirmations/deny signal, add preamble, add postamble afterwards;
With current received signal and confirmation signal, deny that signal, preamble and postamble mate, and the matching result of current received signal is retransmitted merging, obtain the matched retransmission amalgamation result of current received signal;
Prefix signal to current received signal detects, and obtains the testing result of prefix signal;
At least according to the testing result of prefix signal and the matched retransmission amalgamation result of current received signal the signal type of current received signal is judged, obtained the testing result of current received signal.
The embodiment of the invention also provides a kind of checkout gear to comprise:
Matching module, be used for current received signal and the affirmation signal of presetting, deny that signal, preamble and postamble mate, and the matching result of current received signal retransmitted merging, obtain the matched retransmission amalgamation result of current received signal;
Processing module is used for the prefix signal of the signal of current reception is detected, and obtains the testing result of prefix signal; At least according to the testing result of prefix signal and the matched retransmission amalgamation result of current received signal the signal type of current received signal is judged, obtained the testing result of the signal of current reception.
The embodiment of the invention also provides a kind of signal detection system, comprising:
User terminal is used for adding preamble before the downlink data decoding back that receives being sent one or more affirmations/deny signal, adds postamble afterwards;
Node B is used for the signal and the confirmation signal of current reception, denies that signal, preamble and postamble mate, and the matching result of current received signal is retransmitted merging, obtains the matched retransmission amalgamation result of current received signal; Prefix signal to current received signal detects, and obtains the testing result of prefix signal; At least according to the testing result of prefix signal and the matched retransmission amalgamation result of current received signal the signal type of current received signal is judged, obtained the testing result of current received signal.
In the technique scheme, add preamble and postamble, the association of result after the Signal Matching of current reception and prefix signal got up on the whole current received signal is judged, the testing result of prefix signal can the current received signal of filtering type, improve the accuracy of input, and under the transmitting power of same ACK and NACK, can effectively reduce the probability that DTX is mistaken for ACK.
Below by drawings and Examples, the technical scheme of the embodiment of the invention is described in further detail.
Description of drawings
Fig. 1 implements a routine process of analysis figure for signal detecting method of the present invention;
Fig. 2 is signal detecting method embodiment two flow charts of the present invention;
Fig. 3 is the parsing schematic diagram of Fig. 2;
Fig. 4 is signal supervisory instrument embodiment one schematic diagram of the present invention;
Fig. 5 is signal supervisory instrument embodiment two schematic diagrames of the present invention;
Fig. 6 is processing module embodiment one schematic diagram in the signal supervisory instrument of the present invention;
Fig. 7 is processing module embodiment two schematic diagrames in the signal supervisory instrument of the present invention;
Fig. 8 is signal supervisory instrument embodiment three schematic diagrames of the present invention;
Fig. 9 is signal detection system embodiment one schematic diagram of the present invention;
Figure 10 is signal detection system embodiment two schematic diagrames of the present invention.
Embodiment
Transmitting terminal among the present invention (as user terminal) is if number of retransmissions is 1, then user terminal added " Preamble " signal before sending " ACK " or " NACK " signal, add " Postamble " signal after " ACK " or " NACK " signal, the signal of transmission is followed successively by Preamble-ACK/NACK-Postamble; If number of retransmissions is greater than 1, then before sending first " ACK " or " NACK " signal, add " Preamble " signal, add " Postamble " signal the last time after " ACK " of Chong Chuaning or " NACK " signal, suppose that number of retransmissions is 2, what send is ack signal, then sends Preamble-ACK-ACK-Postamble successively.Add the transmitting power that preamble (Preamble) and postamble (Postamble) can reduce confirmation signal (ACK) or deny signal (NACK).After transmitting terminal (as user terminal) had sent data flow, corresponding receiving terminal can received signal, and the signal of current reception is detected, and obtained the type of current received signal.
Referring to Fig. 1, be signal detecting method embodiment one process of analysis figure of the present invention.As shown in Figure 1, present embodiment at first carries out the processing of relevant matches 001 to the data flow that receives, concrete, current received signal and the pattern of " ACK ", " NACK ", " Preamble " and " Postamble " four kinds of signals can be mated, because the number of times that current received signal may retransmit is not 1, therefore need retransmit the result after the current demand signal coupling and merge 004, the result after the acquisition matched retransmission merges.Retransmitting merging 004 o'clock, can carry out prefix signal merging 002 and prefix signal simultaneously and detect 003, obtain the testing result of prefix signal, specifically can be referring to the following explanation that prefix signal is detected, at last, carry out input 005 according to the prefix signal testing result of prefix signal detection 003 back acquisition and the result after the merging of current demand signal matched retransmission, obtain the testing result of current demand signal, i.e. the signal of current reception is " ACK ", " NACK ", " Preamble ", " Postamble " or " DTX ".
Prefix signal to current received signal detects, and the testing result that obtains prefix signal comprises:
1) a preceding signal of current received signal does not exist under the testing result situation, judge: if number of retransmissions is 1, the signal of then getting previous ACK/NACK time slot is as prefix signal, if number of retransmissions greater than 1, then the signal that preceding two ACK/NACK time slots are merged is as prefix signal;
2) a preceding signal of current received signal exists under the testing result situation, directly gets the testing result of the testing result of a preceding signal as prefix signal.
HS-DPCCH carrying and the relevant up feedback signaling of descending HS-DSCH transmission, this signaling is made up of affirmation (ACK) and channel quality indication (CQI), each subframe is made up of 3 time slots, " ACK ", " NACK ", " Preamble ", or " Postamble " is carried on first time slot of HS-DPCCH subframe, CQI is carried in second and the 3rd time slot, the various embodiments described above of the present invention detect judgement at first time slot (ACK/NACK time slot) of each subframe, not to outside the ACK/NACK time slot other time slot (as, the CQI time slot) detect, a preceding signal of described current received signal also is the signal at the ACK/NACK time slot.
Present embodiment confirms in transmission/add preamble before denying signal, add postamble afterwards, and can reduce confirmation signal ACK and deny the transmitting power of signal NACK; And, the association of current received signal and prefix signal got up on the whole current received signal is judged as one, owing to added the testing result of prefix signal, type that can the current received signal of filtering, testing result as prefix signal is a preamble, then the signal of current reception only may be ACK or NACK, the result who merges further combined with matched retransmission again, can improve the accuracy of input, and under the transmitting power of same ACK and NACK, can effectively reduce the probability that DTX is mistaken for ACK.
Referring to Fig. 2, be signal detecting method embodiment two flow charts of the present invention.Fig. 3 is the parsing schematic diagram of Fig. 2.As shown in Figure 2, present embodiment comprises:
Step 0001: before sending one or more affirmations (ACK)/deny (NACK) signal, add preamble (Preamble) signal, add back (Postamble) signal synchronously afterwards;
Step 0010: according to the preliminary signal type that obtains current received signal of the prior information that whether sent downlink data; Prior information specifically can obtain according to whether sending downlink data, if once sent data, then can know and detect the ack/nack signal of up feedback on n the subframe of HS-DPCCH as Node B (Node B) in advance in the up-downgoing of n HS-DSCH subframe;
Step 0002: signal and " ACK ", " NACK ", " Preamble " and " Postamble " of current reception are mated; While execution in step 0003 and step 0004;
Step 0003: the prefix signal to the signal of current reception detects, and obtains the testing result of prefix signal, execution in step 0005;
Step 0004: the matching result to current demand signal retransmits merging;
Step 0005: the signal type of current received signal is judged according to the testing result of prior information, prefix signal and the re-transmission amalgamation result of current received signal;
Step 0006: the testing result that obtains the signal of current reception.
Present embodiment can be understood in conjunction with Fig. 3, Fig. 3 embodiment and Fig. 1 embodiment are similar, but also utilized prior information, owing to receive the receiving terminal of user terminal data stream, know on each subframe, whether have data to send to UE in advance as Node B by HS-DSCH, therefore utilize this prior information in fact impossible signal combination filtering further can be improved the accuracy that receiving terminal (as NodeB) is adjudicated to received signal.As shown in Figure 3, input 051 is to merge 003 result in conjunction with the re-transmission that prior information 010, prefix signal detect 004 testing result, current demand signal to carry out analysis and judgement in the present embodiment, obtain the testing result of current demand signal at last, because present embodiment has also added prior information, therefore, further improved the accuracy of testing result.
The embodiment of the invention can also be concrete in conjunction with default discontinuous transmission threshold value, i.e. the power threshold of DTX with the power of current demand signal matched retransmission amalgamation result and default DTX threshold value relatively, if surpass default threshold value, then is judged as and is not DTX.Because the power ratio during discontinuous transmission is less, the transmission energy is low, if therefore surpass this threshold value, it then is not discontinuous transmission, up must feed back " ACK " arranged, " NACK ", " Preamble " or " Postamble " signal, can from these four types, judge, thus filtering DTX, if be lower than default threshold value, then can tentatively be judged as the DTX signal; Among Fig. 1-Fig. 3 embodiment, if current received signal is all lower with the matching result of " ACK ", " NACK ", " Preamble " and " Postamble ", then can also tentatively be judged as DTX, but in conjunction with default DTX threshold value, the testing result of current demand signal can be more accurate.
When prefix signal is detected, if detect a preceding signal detecting result that does not have current received signal, as: first signal that user terminal sends, when then receiving terminal receives this signal, the front do not have can be for reference a preceding signal detecting result, then can be to previous or a plurality of affirmations of current received signal/deny that the time slot amalgamation result detects, the signal that previous or a plurality of affirmations/deny time slot is merged is as prefix signal; Or obtain the signal type and the default discontinuous transmission threshold value of corresponding prefix signal again according to prior information, to previous or a plurality of affirmations/deny that the result that time slot merges judges, obtains the testing result of prefix signal.
For the convenience of judging, when the type of current received signal is differentiated, can adopt following method:
Set in advance the Assembly Listing of prefix signal and corresponding current received signal, obtain several signal types of current received signal corresponding in the Assembly Listing according to the testing result of prefix signal;
Whether the power of matched retransmission amalgamation result of judging current received signal greater than default discontinuous transmission threshold value, is then tentatively to judge that current received signal is not the discontinuous transmission signal; Otherwise judge that tentatively current received signal is the discontinuous transmission signal;
According to several signal types of current received signal corresponding in the signal type of the current received signal of the preliminary correspondence that obtains of prior information, the described Assembly Listing, the preliminary judged result of current received signal and the matched retransmission amalgamation result of current received signal are judged the signal type of current received signal according to default discontinuous transmission threshold value.
As shown in Table 1, for enumerating prefix signal and the current signal combination tabulation that may send:
The Assembly Listing of table one prefix signal and current demand signal
| Prefix signal | The possible type of current demand signal | Combined number |
| ACK/NACK | ACK/NACK/PRE/POST | 8 kinds |
| PRE(Preamble) | ACK/NACK | 2 kinds |
| DTX/POST(Postamble) | PRE/DTX | 4 kinds |
Can find out from table one, possible signal combination has 14 kinds, therefore, when current received signal is judged, obtain prefix signal according to a prior information and a preceding signal detecting result, thereby dwindled the number of types of current demand signal, as shown in Table 1, Preamble is abbreviated as PRE, and Postamble is abbreviated as POST, as to detect prefix signal be PRE, then as can be known from table one, current demand signal can only be ACK or NACK, again in conjunction with the matched retransmission amalgamation result of current received signal, can judge the type of current demand signal.
The various embodiments described above adopt the pattern that adds forward and backward synchronizing signal, and utilize 14 kinds of possible signal combination, have further improved the accuracy that detects according to prefix signal, DTX threshold value and/or prior information.
Referring to Fig. 4, be signal supervisory instrument embodiment one schematic diagram of the present invention.As shown in Figure 4, present embodiment comprises:
Result after the present embodiment device merges current received signal matched retransmission judges the type of the data-signal of current reception on the whole in conjunction with the testing result of prefix signal.The testing result of prefix signal can the current received signal of filtering type, the result further combined with matched retransmission merges can obtain the correct signal type of current received signal.Present embodiment conveniently detects signal type, further improves the accuracy that detects.
Referring to Fig. 5, be signal supervisory instrument embodiment two schematic diagrames of the present invention.Present embodiment and Fig. 4 embodiment are similar, but can further include:
Can also comprise: thresholding module 03, be connected with processing module 02, be used to store default discontinuous transmission threshold value;
Differentiate submodule, be used for the signal type of current received signal being judged according to the matched retransmission amalgamation result of the signal of the testing result of prior information, default discontinuous transmission threshold value, prefix signal and current reception, specifically can be referring to according to prior information, threshold value etc. current demand signal being carried out the associated description that type is judged among the method embodiment.
Referring to Fig. 6, be processing module embodiment one schematic diagram in the signal supervisory instrument of the present invention.Processing module comprises in the present embodiment:
Prefix signal detection sub-module 0211 is used for the testing result of the preceding received signal of the current received signal prefix signal as current received signal, and with the testing result of the described preceding signal testing result as prefix signal;
Assembly Listing submodule 0212 is used for storing in advance the Assembly Listing that comprises all prefix signals and corresponding current received signal combination;
Signal is differentiated submodule 0213, be connected with prefix signal detection sub-module 0211 and Assembly Listing submodule 0212, be used for obtaining the signal type of current received signal as testing result according to the matched retransmission amalgamation result of current received signal and the testing result of described prefix signal.
Referring to Fig. 7, be processing module embodiment two schematic diagrames in the signal supervisory instrument of the present invention.The present embodiment processing module comprises:
Prefix signal detection sub-module 0221 is connected with the priori module, is used to judge whether a preceding signal of current received signal exists testing result, is then with the testing result of the preceding signal of the current received signal testing result as prefix signal; Otherwise obtain the type of corresponding several prefix signals according to prior information, type according to the prefix signal of default discontinuous transmission threshold value and prior information correspondence, to previous or a plurality of affirmations of current received signal/deny that the result that signal slot merges judges, obtains the testing result of prefix signal;
Assembly Listing submodule 0222, be connected with prefix signal detection sub-module 0221, be used to store the Assembly Listing that comprises prefix signal and corresponding current all combinations of received signal, obtain several signal types of current received signal corresponding in the Assembly Listing according to the testing result of prefix signal;
Differentiate submodule 0223, be connected with prefix signal detection sub-module 0221 and Assembly Listing submodule 0222, whether the power that is used to judge current received signal is that the current received signal of then preliminary judgement is not the discontinuous transmission signal greater than default discontinuous transmission threshold value; Otherwise judge that tentatively current received signal is the discontinuous transmission signal; According to several signal types of current received signal corresponding in the signal type of the current received signal of the preliminary correspondence that obtains of prior information, the Assembly Listing, the preliminary judged result of current received signal and the matched retransmission amalgamation result of current received signal are judged that to the signal type of current received signal the signal type that obtains current received signal is as testing result according to default discontinuous transmission threshold value.
Referring to Fig. 8, be signal supervisory instrument embodiment three schematic diagrames of the present invention.The present embodiment matching module comprises:
The back is (POST) pattern submodule 011 synchronously, is used for storage and the corresponding pattern information of postamble, and the signal of current reception and the back synchronous mode of storage are complementary;
Preamble (PRE) pattern submodule 012 is used for storage and the corresponding pattern speech of preamble breath, and the signal of current reception and the preamble pattern of storage are complementary;
Confirm (ACK) pattern submodule 013, be used for storage and the corresponding pattern information of confirmation signal, and the signal of current reception and the affirmation pattern of storage are complementary;
Deny (NACK) pattern submodule 014, be used for storage and deny the corresponding pattern information of signal, and the signal of current reception and the pattern of denying of storage are complementary;
Merge submodule 015, with back synchronous mode submodule 012, preamble pattern submodule 011, affirmation mode submodule 013 and deny that pattern submodule 014 links to each other, be used for the matching result of each submodule is retransmitted merging.
Referring to Fig. 9, be signal detection system embodiment one schematic diagram of the present invention.Present embodiment comprises:
User terminal is used for adding preamble before the downlink data decoding back that receives being sent one or more affirmations/deny signal, adds postamble afterwards, sends interrupted re-transmitted signal when not detecting control information;
Node B is used for the signal and the confirmation signal of current reception, denies that signal, preamble and postamble mate, and the matching result of current received signal is retransmitted merging, obtains the matched retransmission amalgamation result of current received signal; Prefix signal to current received signal detects, and obtains the testing result of prefix signal; At least according to the testing result of prefix signal and the matched retransmission amalgamation result of current received signal the signal type of current received signal is judged, obtained the testing result of current received signal.
Node B is for sending the functional entity of downlink data and control signaling, the function that can comprise general Node B, as comprise descending sending module, be used to send downlink data and control command, Node B not only comprises the function of general Node B in the present embodiment, comprise also being used for up feedback signal is detected obtaining the functional module of current received signal testing result that the inside concrete structure of Node B can be referring to Fig. 4, Fig. 5 and Fig. 8 embodiment, no longer drawing at this is illustrated.
Referring to Figure 10, be signal detection system embodiment two schematic diagrames of the present invention.Present embodiment is to the further refinement of Node B, and as shown in figure 10, the present embodiment Node B comprises:
Processing module 11 is connected with matching module 14, thresholding module 13 and priori module 12, is used for the prefix signal of the signal of current reception is detected, and obtains the testing result of prefix signal; Coupling amalgamation result according to testing result, discontinuous transmission threshold value and the current received signal of prior information, prefix signal is judged the signal type of current received signal, obtain the testing result of current received signal, described prefix signal can be a preceding signal of current received signal, the signal that previous or a plurality of affirmations/deny signal slot merges.
The present invention can have multiple multi-form embodiment, be that example illustrates technical scheme of the present invention in conjunction with the accompanying drawings with Fig. 1-Figure 10 above, this does not also mean that the applied instantiation of the present invention can only be confined in the specific flow process or example structure, those of ordinary skill in the art should understand, and above the specific embodiments that is provided is some examples in the multiple its preferred usage.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (18)
1. a signal detecting method is characterized in that, comprising:
Before sending one or more affirmations/deny signal, add preamble, add postamble afterwards;
With current received signal and confirmation signal, deny that signal, preamble and postamble mate, and the matching result of current received signal is retransmitted merging, obtain the matched retransmission amalgamation result of current received signal;
Prefix signal to current received signal detects, and obtains the testing result of prefix signal;
At least according to the testing result of prefix signal and the matched retransmission amalgamation result of current received signal the signal type of current received signal is judged, obtained the testing result of current received signal.
2. signal detecting method according to claim 1 is characterized in that, described according to the matched retransmission amalgamation result of the testing result of prefix signal and current received signal the signal type of current received signal is judged at least comprise:
According to default discontinuous transmission threshold value, the testing result of prefix signal and the matched retransmission amalgamation result of current received signal the signal type of current received signal is judged.
3. signal detecting method according to claim 2 is characterized in that, also comprises before the signal type of current received signal is judged:
Tentatively obtain the corresponding prefix signal and/or the signal type of current received signal according to the prior information that whether sent downlink data;
Described according to the matched retransmission amalgamation result of the testing result of prefix signal and current received signal the signal type of current received signal is judged specifically at least comprise:
According to prior information, default discontinuous transmission threshold value, the testing result of prefix signal and the matched retransmission amalgamation result of current received signal the signal type of current received signal is judged.
4. according to the described arbitrary signal detecting method of claim 1-3, it is characterized in that the prefix signal of described signal to current reception detects, the testing result that obtains prefix signal specifically comprises:
When there is testing result in a preceding signal that detects current received signal, with the preceding signal of current received signal prefix signal as current received signal, and with the testing result of the described preceding signal testing result as prefix signal.
5. according to the described arbitrary signal detecting method of claim 1-3, it is characterized in that the prefix signal of described signal to current reception detects, the testing result that obtains prefix signal comprises:
When detecting a preceding signal detecting result that does not have current received signal, judging to retransmit to merge whether number of times is 1, is then to get previous affirmation/deny that the signal of signal slot is as prefix signal; Otherwise confirm/deny that with preceding two signals that signal slot merges are as prefix signal.
6. signal detecting method according to claim 5 is characterized in that, the prefix signal of described signal to current reception detects, and the testing result that obtains prefix signal further comprises:
When detecting a preceding signal detecting result that does not have current received signal, obtain the type of the prefix signal corresponding according to the prior information that whether sent downlink data with prior information;
According to the type of the prefix signal of default discontinuous transmission threshold value and prior information correspondence, to previous or a plurality of affirmations of current received signal/deny that the result that signal slot merges judges, obtains the testing result of prefix signal.
7. signal detecting method according to claim 1 is characterized in that, described signal type to current received signal judges that the testing result that obtains current received signal specifically comprises:
Set in advance the Assembly Listing of prefix signal and corresponding current received signal, obtain several signal types of current received signal corresponding in the Assembly Listing according to the testing result of prefix signal;
The signal type of current received signal is judged according to several signal types that obtain in the matched retransmission amalgamation result of current received signal and the described Assembly Listing signal type that obtains current received signal is as testing result.
8. signal detecting method according to claim 3 is characterized in that, described signal type to current received signal judges that the testing result that obtains current received signal specifically comprises:
Set in advance the Assembly Listing of prefix signal and corresponding current received signal, obtain several signal types of current received signal corresponding in the Assembly Listing according to the testing result of prefix signal;
Whether the power of matched retransmission amalgamation result of judging current received signal greater than default discontinuous transmission threshold value, is then tentatively to judge that current received signal is not the discontinuous transmission signal; Otherwise judge that tentatively current received signal is the discontinuous transmission signal;
According to several signal types of current received signal corresponding in the signal type of the current received signal of the preliminary correspondence that obtains of prior information, the described Assembly Listing, the preliminary judged result of current received signal and the matched retransmission amalgamation result of current received signal are judged that to the signal type of current received signal the signal type that obtains current received signal is as testing result according to default discontinuous transmission threshold value.
9. a signal supervisory instrument is characterized in that, comprising:
Matching module, be used for current received signal and the affirmation signal of presetting, deny that signal, preamble and postamble mate, and the matching result of current received signal retransmitted merging, obtain the matched retransmission amalgamation result of current received signal;
Processing module is used for the prefix signal of current received signal is detected, and obtains the testing result of prefix signal; At least according to the testing result of prefix signal and the matched retransmission amalgamation result of current received signal the signal type of current received signal is judged, obtained the testing result of the signal of current reception.
10. signal supervisory instrument according to claim 9 is characterized in that, also comprises:
The thresholding module is used to store default signal discontinuous transmission threshold value.
11. signal supervisory instrument according to claim 10 is characterized in that, also comprises:
The priori module is used for the prior information whether basis sent downlink data, the preliminary corresponding current received signal and/or the signal type of prefix signal of obtaining;
Described processing module comprises:
Differentiate submodule, be used for the signal type of current received signal being judged according to the matched retransmission amalgamation result of the signal of the testing result of prior information, default discontinuous transmission threshold value, prefix signal and current reception.
12. signal supervisory instrument according to claim 9 is characterized in that, described processing module comprises:
The first prefix signal detection sub-module is used for the testing result of the preceding received signal of the current received signal prefix signal as current received signal, and with the testing result of the described preceding signal testing result as prefix signal;
The first Assembly Listing submodule is used for storing in advance the Assembly Listing that comprises all prefix signals and corresponding current received signal combination;
First signal is differentiated submodule, is used for obtaining the signal type of current received signal as testing result according to the matched retransmission amalgamation result of current received signal and the testing result of described prefix signal.
13. signal supervisory instrument according to claim 11 is characterized in that, described processing module also comprises:
The second prefix signal detection sub-module, be used for type according to the prefix signal of default discontinuous transmission threshold value and prior information correspondence, to previous or a plurality of affirmations of current received signal/deny that the result that signal slot merges judges, obtains the testing result of prefix signal;
The second Assembly Listing submodule is used to store the Assembly Listing that comprises prefix signal and corresponding current all combinations of received signal, obtains several signal types of current received signal corresponding in the Assembly Listing according to the testing result of prefix signal;
Whether described differentiation submodule, the power that is used to judge current received signal are that the current received signal of then preliminary judgement is not the discontinuous transmission signal greater than default discontinuous transmission threshold value; Otherwise judge that tentatively current received signal is the discontinuous transmission signal; According to several signal types of current received signal corresponding in the signal type of the current received signal of the preliminary correspondence that obtains of prior information, the Assembly Listing, the preliminary judged result of current received signal and the matched retransmission amalgamation result of current received signal are judged that to the signal type of current received signal the signal type that obtains current received signal is as testing result according to default discontinuous transmission threshold value.
14., it is characterized in that described matching module comprises according to the described arbitrary signal supervisory instrument of claim 9-13:
Back synchronous mode submodule is used for storage and the corresponding pattern information of postamble, and the signal of current reception and the back synchronous mode of storage are complementary;
The preamble pattern submodule is used for storage and the corresponding pattern information of preamble, and the signal of current reception and the preamble pattern of storage are complementary;
The affirmation mode submodule is used for storage and the corresponding pattern information of confirmation signal, and the signal of current reception and the affirmation pattern of storage are complementary;
Deny the pattern submodule, be used for storage and deny the corresponding pattern information of signal, and the signal of current reception and the pattern of denying of storage are complementary;
Merge submodule, be used for the matching result of each submodule is retransmitted merging.
15. a signal detection system is characterized in that, comprising:
User terminal is used in the downlink data decoding to receiving, and sends one or more affirmations/deny adding preamble before the signal, adds postamble afterwards;
Node B is used for the signal and the confirmation signal of current reception, denies that signal, preamble and postamble mate, and the matching result of current received signal is retransmitted merging, obtains the matched retransmission amalgamation result of current received signal; Prefix signal to current received signal detects, and obtains the testing result of prefix signal; At least according to the testing result of prefix signal and the matched retransmission amalgamation result of current received signal the signal type of current received signal is judged, obtained the testing result of current received signal.
16. signal detection system according to claim 15 is characterized in that, described Node B comprises:
Matching module, be used for current received signal and the affirmation signal of presetting, deny that signal, preamble and postamble mate, and the matching result of current received signal retransmitted merging, obtain the matched retransmission amalgamation result of current received signal;
Processing module is used for the prefix signal of current received signal is detected, and obtains the testing result of prefix signal; At least according to the testing result of prefix signal and the matched retransmission amalgamation result of current received signal the signal type of current received signal is judged, obtained the testing result of the signal of current reception.
17. signal detection system according to claim 16 is characterized in that, described Node B also comprises:
The thresholding module is used to store default signal discontinuous transmission threshold value.
18. signal detection system according to claim 17 is characterized in that, described Node B also comprises:
The priori module is used for the prior information whether basis sent downlink data, the preliminary corresponding current received signal and/or the signal type of prefix signal of obtaining;
Described processing module comprises:
Differentiate submodule, be used for the signal type of current received signal being judged according to the matched retransmission amalgamation result of the signal of the testing result of prior information, default discontinuous transmission threshold value, prefix signal and current reception.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102315901A (en) * | 2010-07-02 | 2012-01-11 | 中兴通讯股份有限公司 | Method and device for determining discontinuous transmission (DTX) |
| CN103809014A (en) * | 2012-11-15 | 2014-05-21 | 凹凸电子（武汉）有限公司 | Detecting unit, detecting circuit and detecting method |
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| CN112671517A (en) * | 2020-12-14 | 2021-04-16 | 中国电子科技集团公司第五十四研究所 | Data retransmission method based on time slot confirmation in mobile ad hoc network communication |
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| GB9925896D0 (en) * | 1999-11-03 | 1999-12-29 | Koninkl Philips Electronics Nv | Radio communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102315901A (en) * | 2010-07-02 | 2012-01-11 | 中兴通讯股份有限公司 | Method and device for determining discontinuous transmission (DTX) |
| CN102315901B (en) * | 2010-07-02 | 2015-06-24 | 中兴通讯股份有限公司 | Method and device for determining discontinuous transmission (DTX) |
| CN104350720A (en) * | 2012-06-26 | 2015-02-11 | 英特尔公司 | Providing serial protocol for bidirectional serial interconnect |
| US9524265B2 (en) | 2012-06-26 | 2016-12-20 | Intel Corporation | Providing a serial protocol for a bidirectional serial interconnect |
| CN104350720B (en) * | 2012-06-26 | 2018-02-13 | 英特尔公司 | The device, method and system of serial protocol for bidirectional linked list interconnection are provided |
| CN103809014A (en) * | 2012-11-15 | 2014-05-21 | 凹凸电子（武汉）有限公司 | Detecting unit, detecting circuit and detecting method |
| CN105827374A (en) * | 2016-03-21 | 2016-08-03 | 华为技术有限公司 | Data decoding method and device |
| CN105827374B (en) * | 2016-03-21 | 2019-11-12 | 华为技术有限公司 | A kind of data decoding method and equipment |
| CN112671517A (en) * | 2020-12-14 | 2021-04-16 | 中国电子科技集团公司第五十四研究所 | Data retransmission method based on time slot confirmation in mobile ad hoc network communication |
| CN112671517B (en) * | 2020-12-14 | 2022-04-08 | 中国电子科技集团公司第五十四研究所 | Data retransmission method based on time slot confirmation in mobile ad hoc network communication |
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