CN104618936A - Method and system for detecting LTE (Long Term Evolution) preamble signal - Google Patents
Method and system for detecting LTE (Long Term Evolution) preamble signal Download PDFInfo
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Abstract
The invention provides method and system for detecting an LTE (Long Term Evolution) preamble signal. The method comprises the steps of performing blind detection for N subframes; acquiring the false detection probability and detection missing probability of the LTE preamble signals in N subframes according to the detection result; determining the false detection threshold according to the false detection probability, initial detection threshold, preset step size, quantity of samples and false detection probability indexes, wherein N is a natural number and is not greater than the quantity of samples; determining the detection missing threshold according to the detection missing probability, the false detection threshold, the preset step size, the sample quantity and the detection missing probability indexes; detecting the LTE preamble signals in the N subframes according to the detection missing threshold. With the adoption of the method, the false detection threshold value meeting the false detection requirement and the detection missing threshold meeting the detection missing requirement can be adaptively detected according to the radio frequency performances of different terminals, so that the consistency of an LTE protocol consistency testing platform to the preamble signal detection performances can be ensured.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of detection method and system of Long Term Evolution LTE targeting signal.
Background technology
Long Term Evolution (Long Term Evolution, LTE) detection perform of leading (Preamble) signal specifies in agreement 3GPP 36.141, limited by two parameters: empty inspection probability (Pfa) and detection probability (Pd), and require that empty inspection probability (Pfa) is not higher than 0.1%, and detection probability (Pd) is not less than 99%.In order to make the method for expressing of parameter index consistent, define false dismissal probability (Pfd), Pfd=1-Pd, then the detection perform of LTE Preamble signal can examine probability (Pfa) not higher than 0.1% by void, and false dismissal probability (Pfd) does not carry out equivalent description higher than 1%.
The Preamble form that LTE supports is as shown in table 1.Parameter wherein defines by agreement 3GPP 36.211, wherein, Ts is the minimum interval of LTE system, for 1/30.72*10^6s, Tcp is Cyclic Prefix (Cyclic Prefix, CP) length, Tseq is Payload (payload) length of preamble sequence, and namely the entire length of premble sequence is Tcp+Tseq.
| Preamble form | T CP | T SEQ |
| 0 | 3168·T s | 24576·T s |
| 1 | 21024·T s | 24576·T s |
| 2 | 6240·T s | 2·24576·T s |
| 3 | 21024·T s | 2·24576·T s |
| 4 | 448·T s | 4096·T s |
Table 1
Each community of LTE has 64 preamble sequences to can be used as the targeting sequencing of Stochastic accessing, owing to being carry out blind Detecting to preamble sequence, so need default detection threshold at receiving terminal, be set to TH, when the signal of blind Detecting is more than TH, judge preamble signal to be detected, otherwise then without, after carrying out blind Detecting to whole 64 preamble sequences, export the result that this detects, existing LTE Preamble input flow process as shown in Figure 1.
Judge whether that down trigger detects preamble sequence, if not, then continue to judge whether that down trigger detects preamble sequence; If, Preamble Opportunity samples to signal, Preamble Opportunity refers to the subframe that Preamble signal may exist, because preamble sequence is blind Detecting, be that terminal independently sends, network side carries out blind Detecting to preamble sequence on each Preamble Opportunity, if detect, then think that terminal sends, if can't detect, then think that terminal does not send.Setting detection threshold TH, i=0, n=0, D (n)=Null, wherein, i is defined as preamble sequence index, and span is 0 ~ 63; N is defined as the detection counter of preamble signal, when preamble signal being detected, and n++; If preamble signal do not detected in whole testing process, then n=0; D (n) is defined as the result of the preamble signal detected, such as, if 2 preamble signals detected in whole testing process, sequence index is respectively 2 and 7, then n ∈ { 1,2}, D (1)=2, D (2)=7; If preamble signal do not detected in whole testing process, then n=0, D (0)=null.Make index of reference be that the preamble sequence pair sampled signal of i is correlated with, calculate its extreme value P, judge whether P is greater than TH, if be not more than, determine preamble sequence not detected, i=i+1, judge whether i is less than or equal to 63, if not, export D (n); If so, make index of reference be that the preamble sequence pair sampled signal of i=i+1 is correlated with, calculate extreme value, continue to judge whether p is greater than the cycling of TH; If be greater than, determine preamble sequence to be detected, index is i, n=n+1, D (n)=i, i=i+1, judges whether i is less than or equal to 63, if not, exports D (n); If so, make index of reference be that the preamble sequence pair sampled signal of i=i+1 is correlated with, calculate extreme value, continue to judge whether p is greater than the cycling of TH.
For different terminals, make an uproar in its end, intermediate frequency local oscillator is revealed and Preamble signal launch mass all also exists difference, therefore, existing LTE Preamble input flow process, if use fixing detection threshold TH, LTE protocol uniformity test platform may be caused to send the void inspection of preamble signal to different terminals and undetected performance inconsistent, thus cause the inconsistent of test result between different terminals, reduce the reliability of LTE protocol uniformity test.
Summary of the invention
The invention provides a kind of detection method and system of LTE Preamble signal, cause the inconsistent of test result between different terminals to solve existing LTE Preamble signal detecting method, reduce the problem of the reliability of LTE protocol uniformity test.
In order to solve the problem, the invention discloses a kind of detection method of LTE Preamble signal, comprising: blind Detecting is carried out to N number of subframe, obtain void inspection probability and the false dismissal probability of the LTE targeting signal in N number of subframe according to testing result; Determine empty inspection threshold value according to described void inspection probability, initial examination and measurement thresholding, default step-length, sample size and empty inspection probability level, wherein, N is natural number, and N is less than or equal to described sample size; Undetected threshold value is determined according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and false dismissal probability index; According to described undetected threshold value, the LTE targeting signal in N number of subframe is detected.
Correspondingly, the invention also discloses a kind of detection system of LTE Preamble signal, comprising: detection probability acquisition module, for carrying out blind Detecting to N number of subframe, obtaining void inspection probability and the false dismissal probability of the LTE targeting signal in N number of subframe according to testing result; Void picks up threshold value determination module, and for determining empty inspection threshold value according to described void inspection probability, initial examination and measurement thresholding, default step-length, sample size and empty inspection probability level, wherein, N is natural number, and N is less than or equal to described sample size; Undetected threshold value determination module, for determining undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and false dismissal probability index; Detection module, for detecting the LTE targeting signal in N number of subframe according to described undetected threshold value.
Compared with background technology, the present invention includes following advantage:
The Preamble Opportunity of certain sample size is set, in sample size, blind Detecting is carried out to N number of Preamble Opportunity, obtain void inspection probability and the false dismissal probability of the LTEPreamble signal in N number of Preamble Opportunity; According to the initial threshold of void inspection probability, false dismissal probability, setting, the sample size of default length and setting, determine empty inspection threshold value and undetected threshold value, utilization determines that the undetected threshold value obtained carries out detection operation to LTE Preamble signal.
Technical solution of the present invention can for the radio-frequency performance of different terminals, determine adaptively to be met the LTE Preamble void inspection threshold value that empty inspection requires and the undetected threshold value of LTE Preamble meeting undetected requirement, utilize and determine that the undetected threshold value obtained detects LTE Preamble signal, ensure consistent to Preamble signal detection performance of LTE protocol uniformity test platform.
Accompanying drawing explanation
Fig. 1 is existing LTE Preamble input flow chart in background technology;
Fig. 2 is the flow chart of steps determining empty inspection threshold T H_init in the embodiment of the present invention;
Fig. 3 is the flow chart of steps determining undetected threshold T H_final in the embodiment of the present invention;
Fig. 4 solves the implementation flow chart that LTE Preamble signal void is examined and undetected performance is inconsistent in the embodiment of the present invention;
Fig. 5 is the detection method flow chart of steps of a kind of LTE Preamble signal in the embodiment of the present invention one;
Fig. 6 is the detection method flow chart of steps of a kind of LTE Preamble signal in the embodiment of the present invention two;
Fig. 7 is the detection system structure chart of a kind of LTE Preamble signal in the embodiment of the present invention three;
Fig. 8 is the detection system structure chart of a kind of LTE Preamble signal in the embodiment of the present invention four.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Before LTE protocol uniformity test starts, needs determine the detection threshold TH required for LTEPreamble input according to technical solution of the present invention, carry out the self-adaptative adjustment of detection threshold TH according to the otherness of the radio-frequency performance of measured terminal, thus farthest ensure the reliability of LTE protocol uniformity test.After detection threshold TH self-adaptative adjustment completes, can start to carry out LTE protocol uniformity test.The execution flow process of technical solution of the present invention is as described below:
After the prevention at radio-frequency port of measured terminal has been connected with LTE protocol uniformity test platform, RRC_IDLE state is entered by space interface signaling Row control measured terminal, namely the radio-frequency module of measured terminal is in open state but does not send any signal, now, make an uproar in the end of what LTE protocol uniformity test platform detected on PreambleOpportunity is exactly measured terminal radio-frequency module and intermediate frequency local oscillator is revealed.Under such condition, increase detection threshold TH with fixing step-length, when sample space is 10000 PreambleOpportunity, ensure that empty inspection probability is less than 0.1%, TH value is now designated as TH_init.If TH_init cannot be obtained between the theoretical maximum TH_MAX of TH=0 and TH, then TH value is set to the factory-default TH_ORIN of LTE protocol uniformity test platform.
Wherein, fixing step-length can be determined according to the requirement of technical solution of the present invention to precision and efficiency of detecting, and such as, fixing step-length can be set to 0.1dB.
When above-mentioned TH_init exists, RRC_CONNECTION state is entered by space interface signaling Row control measured terminal, and use space interface signaling to control measured terminal lasting transmission Preamble signal, now, what LTE protocol uniformity test platform detected on Preamble Opportunity is exactly the Preamble signal that measured terminal radio-frequency module is launched.Increase detection threshold TH_init with above-mentioned fixing step-length, when sample space is 10000 Preamble Opportunity, ensure that false dismissal probability is less than 1%, TH value is now designated as TH_final.If TH_final cannot be obtained between the theoretical maximum TH_MAX of TH_init and TH, then TH value is set to the factory-default TH_ORIN of LTE protocol uniformity test platform.
After determining to draw detection threshold TH, the value of TH is assigned to " TH " shown in Fig. 1 flow process, can starts to carry out LTE protocol uniformity test.
In said process, determine the step of TH_init as shown in Figure 2: control terminal enters RRC_IDLE state, the initial value of setting TH_init is 0, the maximum of T H_MAX of setting TH, with the factory-default TH_ORIG of TH, the initial value of setting counter s is 0, the initial value of the sample size c (being set to 1000) of Preamble Opportunity is 0, in c Preamble Opportunity, the quantity of the Preamble signal that each Preamble Opportunity detects is F (s), wherein, numerically s and c is identical.Judge whether c is less than 1000, if c is not less than 1000, then judge whether the void inspection probability of 1000 Preamble Opportunity is less than 0.1%, sum (F (s-1))/1000 < 0.1% are utilized to represent, if the void inspection probability of 1000 Preamble Opportunity is less than 0.1%, then export TH_init, flow process terminates.If above-mentioned c is less than 1000, then sets detection threshold TH=TH_init, the value of TH is given " TH " shown in Fig. 1 flow process, obtain D (n), F (s)=n, s=s+1, c=c+1, continue to judge whether c is less than 1000.If the void inspection probability of above-mentioned 1000 Preamble Opportunity is not less than 0.1%, then TH_init=TH_init+0.1, wherein, 0.1 is the fixed step size set, judge whether TH_init is less than TH_MAX, if TH_init is not less than TH_MAX, then set TH=TH_ORIN, TH_init=Null, flow process terminates.If TH_init is less than TH_MAX, then re-execute from the step of setting s, c and F (s).
In said process, determine the step of TH_final as shown in Figure 3: above-mentioned determine TH_init after, judge that whether TH_init is empty, namely judge whether TH_init equals Null, if TH_init=Null, then flow process terminates.If TH_init is not equal to Null, then control terminal enters RRC_CONNECTION state, the initial value of setting TH_final is TH_init, setting TH_MAX and TH_ORIG, the initial value of setting counter s is 0, the initial value of the sample size c (being set to 1000) of Preamble Opportunity is 0, in c Preamble Opportunity, the quantity of the Preamble signal that each Preamble Opportunity detects is F (s), judge whether c is less than 1000, if c is not less than 1000, then judge whether the false dismissal probability of 1000 Preamble Opportunity is more than or equal to 0 and is less than 1%, 0≤1-sum (F (s-1))/1000 < 1% are utilized to represent, if the false dismissal probability of 1000 Preamble Opportunity is more than or equal to 0 and is less than 1%, then export TH_final, flow process terminates.If above-mentioned c is less than 1000, then sets detection threshold TH=TH_final, the value of TH is given " TH " shown in Fig. 1 flow process, obtain D (n), F (s)=n, s=s+1, c=c+1, continue to judge whether c is less than 1000.If the false dismissal probability of above-mentioned 1000 Preamble Opportunity is not more than equal 0, or be not less than 1%, then TH_final=TH_final+0.1, wherein, 0.1 is the fixed step size set, and judges whether TH_final is less than TH_MAX, if TH_final is not less than TH_MAX, then set TH=TH_ORIN, TH_final=Null, flow process terminates.If TH_final is less than TH_MAX, then re-execute from the step of setting s, c and F (s).
In technical solution of the present invention, self adaptation solves the inspection of LTE Preamble signal void and the inconsistent implementation of undetected performance as shown in Figure 4: determine TH_init, judge whether TH_init is empty, if TH_init is empty, then by TH=TH_ORIG assignment to " TH " shown in Fig. 1 flow process, and export " Preamble detection may exist inconsistent ", flow process terminates.If TH_init is not empty, judge whether TH_final is empty, if TH_final be sky, then by TH=TH_ORIG assignment to " TH " shown in Fig. 1 flow process, and export " Preamble detection may exist inconsistent ", flow process terminates.If TH_final is not empty, then by TH=TH_final assignment to " TH " shown in Fig. 1 flow process, flow process terminates.
In sum, technical solution of the present invention can when determining detection threshold TH_final, and LTE protocol uniformity test platform can remain on factory set conditions to the void inspection of LTE Preamble signal and undetected performance; Technical solution of the present invention can self adaptation determine detection threshold TH_final time, can ensure that the void inspection for the LTE Preamble signal of different terminals is consistent with undetected property retention, thus the reliability of raising LTE protocol uniformity test.
Below by detection method and the system of enumerating several specific embodiment and introduce in detail a kind of LTEPreamble signal provided by the invention.
Embodiment one
Introduce the detection method of a kind of LTE Preamble signal that the embodiment of the present invention provides in detail.
With reference to Fig. 5, show the detection method flow chart of steps of a kind of LTE Preamble signal in the embodiment of the present invention.
Step 100, carries out blind Detecting to N number of subframe, obtains void inspection probability and the false dismissal probability of the LTE targeting signal in N number of subframe according to testing result.
Described N is natural number, and N order can increase from 0.
Described subframe can be Preamble Opportunity.
Described false dismissal probability can deduct detection probability by 1 and obtain.
Along with the increase of above-mentioned N, often increase the blind Detecting of a Preamble Opportunity, a new void inspection probability and false dismissal probability can be obtained.
Step 102, determine empty inspection threshold value according to described void inspection probability, initial examination and measurement thresholding, default step-length, sample size and empty inspection probability level, wherein, N is less than or equal to described sample size.
Along with the increase of above-mentioned N, often increase the blind Detecting of a Preamble Opportunity, a new void inspection probability and false dismissal probability can be obtained, meanwhile, also can according to the initial examination and measurement thresholding of the void inspection probability obtained and setting, preset step-length, sample size and empty inspection probability level and determine a new void inspection threshold value.Wherein, initial examination and measurement thresholding can be set to 0, and default step-length can be set as 0.1dB, and sample size can be set as 1000, and empty inspection probability level can be set as 0.1%.
The described void inspection threshold value determining to obtain is the void inspection threshold value met certain requirements.This certain requirement can be: increase initial examination and measurement thresholding with fixing default step-length, when sample size is 10000 Preamble Opportunity, ensures that empty inspection probability is less than empty inspection probability level 0.1%.
Step 104, determines undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and false dismissal probability index.
Correspondingly, also can according to the initial examination and measurement thresholding of the false dismissal probability obtained, the void inspection threshold value determined in above-mentioned steps and setting, preset step-length, sample size and empty inspection probability level and determine a new undetected threshold value.Wherein, initial examination and measurement thresholding can be set to 0, and default step-length can be set as 0.1dB, and sample size can be set as 1000, and empty inspection probability level can be set as 0.1%.
Step 106, detects the LTE targeting signal in N number of subframe according to described undetected threshold value.
Describedly determine that obtaining undetected threshold value is the undetected threshold value met certain requirements.This certain requirement can be: increase empty inspection threshold value with fixing default step-length, when sample size is 10000 PreambleOpportunity, ensure that false dismissal probability is less than false dismissal probability index 1%.
In sum, in the technical scheme of the embodiment of the present invention, the Preamble Opportunity of certain sample size is set, in sample size, blind Detecting is carried out to N number of Preamble Opportunity, obtains void inspection probability and the false dismissal probability of the LTE Preamble signal in N number of Preamble Opportunity; According to the initial threshold of void inspection probability, false dismissal probability, setting, the sample size of default length and setting, determine empty inspection threshold value and undetected threshold value, utilization determines that the undetected threshold value obtained carries out detection operation to LTE Preamble signal.
Technical solution of the present invention can for the radio-frequency performance of different terminals, determine adaptively to be met the LTE Preamble void inspection threshold value that empty inspection requires and the undetected threshold value of LTE Preamble meeting undetected requirement, utilize and determine that the undetected threshold value obtained detects LTE Preamble signal, ensure consistent to Preamble signal detection performance of LTE protocol uniformity test platform.
Embodiment two
Introduce the detection method of a kind of LTE Preamble signal that the embodiment of the present invention provides in detail.
With reference to Fig. 6, show the detection method flow chart of steps of a kind of LTE Preamble signal in the embodiment of the present invention.
Step 200, carries out blind Detecting to N number of subframe, obtains void inspection probability and the false dismissal probability of the LTE targeting signal in N number of subframe according to testing result.
Described N is natural number, and N order can increase from 0.
Described subframe can be Preamble Opportunity.
Described false dismissal probability can deduct detection probability by 1 and obtain.
Along with the increase of above-mentioned N, often increase the blind Detecting of a Preamble Opportunity, a new void inspection probability and false dismissal probability can be obtained.
Step 202, determine empty inspection threshold value according to described void inspection probability, initial examination and measurement thresholding, default step-length, sample size and empty inspection probability level, wherein, N is less than or equal to described sample size.
Along with the increase of above-mentioned N, often increase the blind Detecting of a Preamble Opportunity, a new void inspection probability and false dismissal probability can be obtained, meanwhile, also can according to the initial examination and measurement thresholding of the void inspection probability obtained and setting, preset step-length, sample size and empty inspection probability level and determine a new void inspection threshold value.Wherein, initial examination and measurement thresholding can be set to 0, and default step-length can be set as 0.1dB, and sample size can be set as 1000, and empty inspection probability level can be set as 0.1%.
The described void inspection threshold value determining to obtain is the void inspection threshold value met certain requirements.This certain requirement can be: increase initial examination and measurement thresholding with fixing default step-length, when sample size is 10000 Preamble Opportunity, ensures that empty inspection probability is less than empty inspection probability level 0.1%.
Preferably, described step 202 can comprise:
Sub-step 2021, determine detection threshold when carrying out blind Detecting to N number of subframe according to described initial examination and measurement thresholding and described default step-length, wherein, N is greater than 0, and when N equals 0, described detection threshold is described initial examination and measurement thresholding.
Preferably, described sub-step 2021 can be: when N is greater than 0, the positive integer of described initial examination and measurement thresholding with described default step-length is doubly added, and obtains detection threshold when carrying out blind Detecting to N number of subframe.
Sub-step 2022, detection threshold when described void inspection probability being less than described void inspection probability level is defined as empty inspection threshold value.
Preferably, described sub-step 2022 can comprise:
Step 221, judges whether described void inspection probability is less than described void inspection probability level; If be less than, then perform step 222; If be not less than, then perform step 223.
Step 222, is defined as described void inspection threshold value by the detection threshold during void of the LTE targeting signal obtained in N number of subframe inspection probability.
Step 223, blind Detecting is carried out to N+1 subframe, the void inspection probability of the LTE targeting signal in N+1 subframe is obtained according to testing result, and detection threshold during void inspection probability according to the LTE targeting signal obtained in N number of subframe and described default step-length, determine the detection threshold when void of the LTE targeting signal obtained in N+1 subframe examines probability.
Wherein, detection threshold during void inspection probability according to the LTE targeting signal obtained in N number of subframe and described default step-length, determine that the process of the detection threshold when void of the LTE targeting signal obtained in N+1 subframe examines probability can be:
The detection threshold during void of the LTE targeting signal obtained in N number of subframe inspection probability be added with described default step-length, the void as the LTE targeting signal obtained in N+1 subframe examines detection threshold during probability.
Step 224, whether the void inspection probability continuing the LTE targeting signal judged in N+1 subframe is less than described void inspection probability level; If be not less than, continue to carry out blind Detecting to N+2 subframe, the void inspection probability of the LTE targeting signal in N+2 subframe is obtained according to testing result, and detection threshold during void inspection probability according to the LTE targeting signal obtained in N+1 subframe and described default step-length, determine the detection threshold when void of the LTE targeting signal obtained in N+2 subframe examines probability.
Wherein, detection threshold during void inspection probability according to the LTE targeting signal obtained in N+1 subframe and described default step-length, determine that the process of the detection threshold when void of the LTE targeting signal obtained in N+2 subframe examines probability can be:
The detection threshold during void of the LTE targeting signal obtained in N+1 subframe inspection probability be added with described default step-length, the void as the LTE targeting signal obtained in N+2 subframe examines detection threshold during probability.
Step 225, whether the void inspection probability continuing the LTE targeting signal judged in N+2 subframe is less than described void inspection probability level, until the void inspection probability of LTE targeting signal in N+M subframe is less than described void inspection probability level, the detection threshold during void of the LTE targeting signal obtained in N+M subframe inspection probability is defined as described void inspection threshold value, wherein, M is positive integer, and N+M is less than or equal to described sample size.
Step 204, determines undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and false dismissal probability index.
Correspondingly, also can according to the initial examination and measurement thresholding of the false dismissal probability obtained, the void inspection threshold value determined in above-mentioned steps and setting, preset step-length, sample size and empty inspection probability level and determine a new undetected threshold value.Wherein, initial examination and measurement thresholding can be set to 0, and default step-length can be set as 0.1dB, and sample size can be set as 1000, and empty inspection probability level can be set as 0.1%.
Preferably, described step 204 can comprise:
Sub-step 2041, determine detection threshold when carrying out blind Detecting to N number of subframe according to described void inspection threshold value and described default step-length, wherein, N is greater than 0, and when N equals 0, described detection threshold is described void inspection threshold value.
Preferably, described sub-step 2041 can be:
When N is greater than 0, described void inspection threshold value is doubly added with the positive integer of described default step-length, obtains detection threshold when blind Detecting carried out to N number of subframe.
Sub-step 2042, detection threshold when described false dismissal probability being less than described false dismissal probability index is defined as undetected threshold value.
Preferably, described sub-step 2042 can comprise:
Step 421, judges whether described N false dismissal probability is less than described false dismissal probability index, if be less than, then performs step 422; If be not less than, then perform step 423.
Step 422, is defined as described undetected threshold value by the detection threshold during false dismissal probability of the LTE targeting signal obtained in N number of subframe.
Step 423, blind Detecting is carried out to N+1 subframe, the false dismissal probability of the LTE targeting signal in N+1 subframe is obtained according to testing result, and detection threshold during false dismissal probability according to the LTE targeting signal obtained in N number of subframe and described default step-length, determine the detection threshold during false dismissal probability of the LTE targeting signal obtained in N+1 subframe.
Wherein, detection threshold during false dismissal probability according to the LTE targeting signal obtained in N number of subframe and described default step-length, the process of detection threshold when determining the false dismissal probability of the LTE targeting signal obtained in N+1 subframe can be:
The detection threshold during false dismissal probability of the LTE targeting signal obtained in N number of subframe is added with described default step-length, detection threshold during false dismissal probability as the LTE targeting signal in acquisition N+1 subframe.
Step 424, whether the false dismissal probability continuing the LTE targeting signal judged in N+1 subframe is less than described false dismissal probability index; If be not less than, continue to carry out blind Detecting to N+2 subframe, the false dismissal probability of the LTE targeting signal in N+2 subframe is obtained according to testing result, and detection threshold during false dismissal probability according to the LTE targeting signal obtained in N+1 subframe and described default step-length, determine the detection threshold during false dismissal probability of the LTE targeting signal in acquisition N+2 subframe.
Wherein, detection threshold during false dismissal probability according to the LTE targeting signal obtained in N+1 subframe and described default step-length, the process of detection threshold when determining the false dismissal probability of the LTE targeting signal in acquisition N+2 subframe can be:
The detection threshold during false dismissal probability of the LTE targeting signal obtained in N+1 subframe is added with described default step-length, detection threshold during false dismissal probability as the LTE targeting signal in acquisition N+2 subframe.
Step 425, whether the false dismissal probability continuing the LTE targeting signal judged in N+2 subframe is less than described false dismissal probability index, until the false dismissal probability of LTE targeting signal in N+M subframe is less than described false dismissal probability index, the detection threshold during false dismissal probability of the LTE targeting signal obtained in N+M subframe is defined as described undetected threshold value, wherein, M is positive integer, and N+M is less than or equal to described sample size.
Step 206, detects the LTE targeting signal in N number of subframe according to described undetected threshold value.
Describedly determine that obtaining undetected threshold value is the undetected threshold value met certain requirements.This certain requirement can be: increase empty inspection threshold value with fixing default step-length, when sample size is 10000 PreambleOpportunity, ensure that false dismissal probability is less than false dismissal probability index 1%.
Preferably, if do not determine to obtain described void inspection threshold value according to described void inspection probability, described initial examination and measurement thresholding, described default step-length, described sample size and described void inspection probability level, or, if do not determine to obtain described undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and described false dismissal probability index, then according to void inspection thresholding default value, LTE targeting signal is detected.
That is, between described initial examination and measurement thresholding and detection threshold maximum, according to described void inspection probability, described initial examination and measurement thresholding, described default step-length, described sample size and described void inspection probability level are not determined to obtain described void inspection threshold value, or, between described void inspection threshold value and described detection threshold maximum, according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and described false dismissal probability index are not determined to obtain described undetected threshold value, then according to void inspection thresholding default value, LTE targeting signal is detected.
In sum, in the technical scheme of the embodiment of the present invention, the Preamble Opportunity of certain sample size is set, in sample size, blind Detecting is carried out to N number of Preamble Opportunity, obtains void inspection probability and the false dismissal probability of the LTE Preamble signal in N number of Preamble Opportunity; According to the initial threshold of void inspection probability, false dismissal probability, setting, the sample size of default length and setting, determine empty inspection threshold value and undetected threshold value, utilization determines that the undetected threshold value obtained carries out detection operation to LTE Preamble signal.
Technical solution of the present invention can for the radio-frequency performance of different terminals, determine adaptively to be met the LTE Preamble void inspection threshold value that empty inspection requires and the undetected threshold value of LTE Preamble meeting undetected requirement, utilize and determine that the undetected threshold value obtained detects LTE Preamble signal, ensure consistent to Preamble signal detection performance of LTE protocol uniformity test platform.
Technical solution of the present invention cannot self adaptation determine the detection threshold of LTE Preamble signal time, can ensure that LTE protocol uniformity test platform is identical with existing technical scheme with undetected performance to the inspection of the void of Preamble signal.
Embodiment three
Introduce the detection system of a kind of LTE Preamble signal that the embodiment of the present invention provides in detail.
With reference to Fig. 7, show the detection system structure chart of a kind of LTE Preamble signal in the embodiment of the present invention.
Described system can comprise: detection probability acquisition module 300, and void picks up threshold value determination module 302, undetected threshold value determination module 304, detection module 306.
Introduce the relation between the function of each module and each module below respectively in detail.
Detection probability acquisition module 300, for carrying out blind Detecting to N number of subframe, obtains void inspection probability and the false dismissal probability of the LTE targeting signal in N number of subframe according to testing result.
Void picks up threshold value determination module 302, and for determining empty inspection threshold value according to described void inspection probability, initial examination and measurement thresholding, default step-length, sample size and empty inspection probability level, wherein, N is natural number, and N is less than or equal to described sample size.
Undetected threshold value determination module 304, for determining undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and false dismissal probability index.
Detection module 306, for detecting the LTE targeting signal in N number of subframe according to described undetected threshold value.
In sum, in the technical scheme of the embodiment of the present invention, the Preamble Opportunity of certain sample size is set, in sample size, blind Detecting is carried out to N number of Preamble Opportunity, obtains void inspection probability and the false dismissal probability of the LTE Preamble signal in N number of Preamble Opportunity; According to the initial threshold of void inspection probability, false dismissal probability, setting, the sample size of default length and setting, determine empty inspection threshold value and undetected threshold value, utilization determines that the undetected threshold value obtained carries out detection operation to LTE Preamble signal.
Technical solution of the present invention can for the radio-frequency performance of different terminals, determine adaptively to be met the LTE Preamble void inspection threshold value that empty inspection requires and the undetected threshold value of LTE Preamble meeting undetected requirement, utilize and determine that the undetected threshold value obtained detects LTE Preamble signal, ensure consistent to Preamble signal detection performance of LTE protocol uniformity test platform.
Embodiment four
Introduce the detection system of a kind of LTE Preamble signal that the embodiment of the present invention provides in detail.
With reference to Fig. 8, show the detection system structure chart of a kind of LTE Preamble signal in the embodiment of the present invention.
Described system can comprise: detection probability acquisition module 400, and void picks up threshold value determination module 402, undetected threshold value determination module 404, detection module 406.
Wherein, described void is picked up threshold value determination module 402 and can be comprised: the first detection threshold determination submodule 4021, void picks up threshold value determination submodule 4022.
Described void is picked up threshold value determination submodule 4022 and can be comprised: empty inspection probabilistic determination unit, void picks up threshold value determining unit.
Described undetected threshold value determination module 404 can comprise: the second detection threshold determination submodule 4041, undetected threshold value determination submodule 4042.
Described undetected threshold value determination submodule 4042 can comprise: false dismissal probability judging unit, leaks and picks up threshold value determining unit.
Introduce the relation between each module, each submodule, the function of each unit and each module, each submodule, each unit below respectively in detail.
Detection probability acquisition module 400, for carrying out blind Detecting to N number of subframe, obtains void inspection probability and the false dismissal probability of the LTE targeting signal in N number of subframe according to testing result.
Void picks up threshold value determination module 402, and for determining empty inspection threshold value according to described void inspection probability, initial examination and measurement thresholding, default step-length, sample size and empty inspection probability level, wherein, N is natural number, and N is less than or equal to described sample size.
Preferably, described void is picked up threshold value determination module 402 and can be comprised:
First detection threshold determination submodule 4021, for when N is greater than 0, is doubly added the positive integer of described initial examination and measurement thresholding with described default step-length, obtains detection threshold when carrying out blind Detecting to N number of subframe.
Void picks up threshold value determination submodule 4022, is defined as empty inspection threshold value for detection threshold when described void inspection probability being less than described void inspection probability level.Wherein, when N equals 0, described detection threshold is described initial examination and measurement thresholding.
Preferably, described void is picked up threshold value determination submodule 4022 and can be comprised:
Empty inspection probabilistic determination unit, for judging whether described void inspection probability is less than described void inspection probability level.
Void picks up threshold value determining unit, if be less than described void inspection probability level for described void inspection probability, then the detection threshold during void of the LTE targeting signal obtained in N number of subframe inspection probability is defined as described void inspection threshold value.
If described void inspection probability is not less than described void inspection probability level, then described detection probability acquisition module 400 pairs of N+1 subframes carry out blind Detecting, obtain the void inspection probability of the LTE targeting signal in N+1 subframe according to testing result; The detection threshold during void of the LTE targeting signal obtained in N number of subframe inspection probability is added with described default step-length by described first detection threshold determination submodule 4021, and the void as the LTE targeting signal obtained in N+1 subframe examines detection threshold during probability; Whether the void inspection probability that described void inspection probabilistic determination unit continues the LTE targeting signal judged in N+1 subframe is less than described void inspection probability level; If the void inspection probability of the LTE targeting signal in N+1 subframe is not less than described void inspection probability level, described detection probability acquisition module 400 continues to carry out blind Detecting to N+2 subframe, obtains the void inspection probability of the LTE targeting signal in N+2 subframe according to testing result; The detection threshold during void of the LTE targeting signal obtained in N+1 subframe inspection probability is added with described default step-length by described first detection threshold determination submodule 4021, and the void as the LTE targeting signal obtained in N+2 subframe examines detection threshold during probability.
Whether the void inspection probability that described void inspection probabilistic determination unit continues the LTE targeting signal judged in N+2 subframe is less than described void inspection probability level, until the void inspection probability of LTE targeting signal in N+M subframe is less than described void inspection probability level, described void is picked up threshold value determining unit and the detection threshold during void of the LTE targeting signal obtained in N+M subframe inspection probability is defined as described void inspection threshold value, wherein, M is positive integer, and N+M is less than or equal to described sample size.
Undetected threshold value determination module 404, for determining undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and false dismissal probability index.
Preferably, described undetected threshold value determination module 404 can comprise:
Second detection threshold determination submodule 4041, for when N is greater than 0, is doubly added described void inspection threshold value with the positive integer of described default step-length, obtains detection threshold when carrying out blind Detecting to N number of subframe.
Undetected threshold value determination submodule 4042, is defined as undetected threshold value for detection threshold when described false dismissal probability being less than described false dismissal probability index; Wherein, when N equals 0, described detection threshold is described void inspection threshold value.
Preferably, described undetected threshold value determination submodule 4042 can comprise:
False dismissal probability judging unit, for judging whether described false dismissal probability is less than described false dismissal probability index.
Threshold value determining unit is picked up in leakage, if be less than described false dismissal probability index for described false dismissal probability, then the detection threshold during false dismissal probability of the LTE targeting signal obtained in N number of subframe is defined as described undetected threshold value.
If described false dismissal probability is not less than described false dismissal probability index, then described detection probability acquisition module 400 pairs of N+1 subframes carry out blind Detecting, obtain the false dismissal probability of the LTE targeting signal in N+1 subframe according to testing result; The detection threshold during false dismissal probability of the LTE targeting signal obtained in N number of subframe is added with described default step-length by described second detection threshold determination submodule 4041, detection threshold during false dismissal probability as the LTE targeting signal in acquisition N+1 subframe; Whether the false dismissal probability that described false dismissal probability judging unit continues the LTE targeting signal judged in N+1 subframe is less than described false dismissal probability index; If the false dismissal probability of the LTE targeting signal in N+1 subframe is not less than described false dismissal probability index, described detection probability acquisition module 400 continues to carry out blind Detecting to N+2 subframe, obtains the false dismissal probability of the LTE targeting signal in N+2 subframe according to testing result; The detection threshold during false dismissal probability of the LTE targeting signal obtained in N+1 subframe is added with described default step-length by described second detection threshold determination submodule 4041, detection threshold during false dismissal probability as the LTE targeting signal in acquisition N+2 subframe.
Whether the false dismissal probability that described false dismissal probability judging unit continues the LTE targeting signal judged in N+2 subframe is less than described false dismissal probability index, until the false dismissal probability of LTE targeting signal in N+M subframe is less than described false dismissal probability index, described leakage is picked up threshold value determining unit and the detection threshold during false dismissal probability of the LTE targeting signal obtained in N+M subframe is defined as described undetected threshold value, wherein, M is positive integer, and N+M is less than or equal to described sample size.
Detection module 406, for detecting the LTE targeting signal in N number of subframe according to described undetected threshold value.
Preferably, described system also comprises:
Acquiescence Threshold detection module, if for not determining to obtain described void inspection threshold value according to described void inspection probability, described initial examination and measurement thresholding, described default step-length, described sample size and described void inspection probability level, or, if do not determine to obtain described undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and described false dismissal probability index, then according to void inspection thresholding default value, LTE targeting signal is detected.
Preferably, do not determine to obtain described void inspection threshold value according to described void inspection probability, described initial examination and measurement thresholding, described default step-length, described sample size and described void inspection probability level if described, can comprise:
If between described initial examination and measurement thresholding and detection threshold maximum, do not determine to obtain described void inspection threshold value according to described void inspection probability, described initial examination and measurement thresholding, described default step-length, described sample size and described void inspection probability level.
Preferably, do not determine to obtain described undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and described false dismissal probability index if described, can comprise:
If between described void inspection threshold value and described detection threshold maximum, do not determine to obtain described undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and described false dismissal probability index.
In sum, in the technical scheme of the embodiment of the present invention, the Preamble Opportunity of certain sample size is set, in sample size, blind Detecting is carried out to N number of Preamble Opportunity, obtains void inspection probability and the false dismissal probability of the LTE Preamble signal in N number of Preamble Opportunity; According to the initial threshold of void inspection probability, false dismissal probability, setting, the sample size of default length and setting, determine empty inspection threshold value and undetected threshold value, utilization determines that the undetected threshold value obtained carries out detection operation to LTE Preamble signal.
Technical solution of the present invention can for the radio-frequency performance of different terminals, determine adaptively to be met the LTE Preamble void inspection threshold value that empty inspection requires and the undetected threshold value of LTE Preamble meeting undetected requirement, utilize and determine that the undetected threshold value obtained detects LTE Preamble signal, ensure consistent to Preamble signal detection performance of LTE protocol uniformity test platform.
Technical solution of the present invention cannot self adaptation determine the detection threshold of LTE Preamble signal time, can ensure that LTE protocol uniformity test platform is identical with existing technical scheme with undetected performance to the inspection of the void of Preamble signal.
For system embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above to detection method and the system of a kind of LTE Preamble signal that the embodiment of the present invention provides, be described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (17)
1. a detection method for Long Term Evolution LTE targeting signal, is characterized in that, comprising:
Blind Detecting is carried out to N number of subframe, obtains void inspection probability and the false dismissal probability of the LTE targeting signal in N number of subframe according to testing result;
Determine empty inspection threshold value according to described void inspection probability, initial examination and measurement thresholding, default step-length, sample size and empty inspection probability level, wherein, N is natural number, and N is less than or equal to described sample size;
Undetected threshold value is determined according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and false dismissal probability index;
According to described undetected threshold value, the LTE targeting signal in N number of subframe is detected.
2. method according to claim 1, is characterized in that, described according to described void inspection probability, initial examination and measurement thresholding, preset step-length, sample size and empty inspection probability level and determine empty inspection threshold value, comprising:
Determine detection threshold when carrying out blind Detecting to N number of subframe according to described initial examination and measurement thresholding and described default step-length, wherein, N is greater than 0;
Detection threshold when described void inspection probability being less than described void inspection probability level is defined as empty inspection threshold value;
Wherein, when N equals 0, described detection threshold is described initial examination and measurement thresholding.
3. method according to claim 2, is characterized in that, the described detection threshold determining when carrying out blind Detecting to N number of subframe according to described initial examination and measurement thresholding and described default step-length, and wherein, N is greater than 0, comprising:
When N is greater than 0, the positive integer of described initial examination and measurement thresholding with described default step-length is doubly added, obtains detection threshold when blind Detecting carried out to N number of subframe.
4. method according to claim 2, is characterized in that, described detection threshold when described void inspection probability being less than described void inspection probability level is defined as empty inspection threshold value, comprising:
Judge whether described void inspection probability is less than described void inspection probability level;
If be less than, the detection threshold during void of the LTE targeting signal obtained in N number of subframe inspection probability is defined as described void inspection threshold value;
If be not less than, blind Detecting is carried out to N+1 subframe, the void inspection probability of the LTE targeting signal in N+1 subframe is obtained according to testing result, and detection threshold during void inspection probability according to the LTE targeting signal obtained in N number of subframe and described default step-length, determine the detection threshold when void of the LTE targeting signal obtained in N+1 subframe examines probability;
Whether the void inspection probability continuing the LTE targeting signal judged in N+1 subframe is less than described void inspection probability level; If be not less than, continue to carry out blind Detecting to N+2 subframe, the void inspection probability of the LTE targeting signal in N+2 subframe is obtained according to testing result, and detection threshold during void inspection probability according to the LTE targeting signal obtained in N+1 subframe and described default step-length, determine the detection threshold when void of the LTE targeting signal obtained in N+2 subframe examines probability;
Whether the void inspection probability continuing the LTE targeting signal judged in N+2 subframe is less than described void inspection probability level, until the void inspection probability of LTE targeting signal in N+M subframe is less than described void inspection probability level, the detection threshold during void of the LTE targeting signal obtained in N+M subframe inspection probability is defined as described void inspection threshold value, wherein, M is positive integer, and N+M is less than or equal to described sample size.
5. method according to claim 4, it is characterized in that, detection threshold during the void inspection probability of the described LTE targeting signal according to obtaining in N number of subframe and described default step-length, determine the detection threshold when void of the LTE targeting signal obtained in N+1 subframe examines probability, comprising:
The detection threshold during void of the LTE targeting signal obtained in N number of subframe inspection probability be added with described default step-length, the void as the LTE targeting signal obtained in N+1 subframe examines detection threshold during probability;
Detection threshold during the void inspection probability of the described LTE targeting signal according to obtaining in N+1 subframe and described default step-length, determine the detection threshold when void of the LTE targeting signal obtained in N+2 subframe examines probability, comprising:
The detection threshold during void of the LTE targeting signal obtained in N+1 subframe inspection probability be added with described default step-length, the void as the LTE targeting signal obtained in N+2 subframe examines detection threshold during probability.
6. method according to claim 1, is characterized in that, described according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and false dismissal probability index determine undetected threshold value, comprising:
Determine detection threshold when carrying out blind Detecting to N number of subframe according to described void inspection threshold value and described default step-length, wherein, N is greater than 0;
Detection threshold when described false dismissal probability being less than described false dismissal probability index is defined as undetected threshold value;
Wherein, when N equals 0, described detection threshold is described void inspection threshold value.
7. method according to claim 6, is characterized in that, the described detection threshold determining when carrying out blind Detecting to N number of subframe according to described void inspection threshold value and described default step-length, and wherein, N is greater than 0, comprising:
When N is greater than 0, described void inspection threshold value is doubly added with the positive integer of described default step-length, obtains detection threshold when blind Detecting carried out to N number of subframe.
8. method according to claim 6, is characterized in that, described detection threshold when described false dismissal probability being less than described false dismissal probability index is defined as undetected threshold value, comprising:
Judge whether described N false dismissal probability is less than described false dismissal probability index;
If be less than, the detection threshold during false dismissal probability of the LTE targeting signal obtained in N number of subframe is defined as described undetected threshold value;
If be not less than, blind Detecting is carried out to N+1 subframe, the false dismissal probability of the LTE targeting signal in N+1 subframe is obtained according to testing result, and detection threshold during false dismissal probability according to the LTE targeting signal obtained in N number of subframe and described default step-length, determine the detection threshold during false dismissal probability of the LTE targeting signal obtained in N+1 subframe;
Whether the false dismissal probability continuing the LTE targeting signal judged in N+1 subframe is less than described false dismissal probability index; If be not less than, continue to carry out blind Detecting to N+2 subframe, the false dismissal probability of the LTE targeting signal in N+2 subframe is obtained according to testing result, and detection threshold during false dismissal probability according to the LTE targeting signal obtained in N+1 subframe and described default step-length, determine the detection threshold during false dismissal probability of the LTE targeting signal in acquisition N+2 subframe;
Whether the false dismissal probability continuing the LTE targeting signal judged in N+2 subframe is less than described false dismissal probability index, until the false dismissal probability of LTE targeting signal in N+M subframe is less than described false dismissal probability index, the detection threshold during false dismissal probability of the LTE targeting signal obtained in N+M subframe is defined as described undetected threshold value, wherein, M is positive integer, and N+M is less than or equal to described sample size.
9. method according to claim 8, it is characterized in that, detection threshold during the described false dismissal probability according to the LTE targeting signal in the N number of subframe of acquisition and described default step-length, determine the detection threshold during false dismissal probability of the LTE targeting signal obtained in N+1 subframe, comprising:
The detection threshold during false dismissal probability of the LTE targeting signal obtained in N number of subframe is added with described default step-length, detection threshold during false dismissal probability as the LTE targeting signal in acquisition N+1 subframe;
Detection threshold during the described false dismissal probability according to the LTE targeting signal in acquisition N+1 subframe and described default step-length, determine the detection threshold during false dismissal probability of the LTE targeting signal obtained in N+2 subframe, comprising:
The detection threshold during false dismissal probability of the LTE targeting signal obtained in N+1 subframe is added with described default step-length, detection threshold during false dismissal probability as the LTE targeting signal in acquisition N+2 subframe.
10. method according to claim 1, is characterized in that, described method also comprises:
If do not determine to obtain described void inspection threshold value according to described void inspection probability, described initial examination and measurement thresholding, described default step-length, described sample size and described void inspection probability level, or, if do not determine to obtain described undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and described false dismissal probability index, then according to void inspection thresholding default value, LTE targeting signal is detected.
11. methods according to claim 10, is characterized in that, do not determine to obtain described void inspection threshold value, comprising if described according to described void inspection probability, described initial examination and measurement thresholding, described default step-length, described sample size and described void inspection probability level:
If between described initial examination and measurement thresholding and detection threshold maximum, do not determine to obtain described void inspection threshold value according to described void inspection probability, described initial examination and measurement thresholding, described default step-length, described sample size and described void inspection probability level.
12. methods according to claim 11, is characterized in that, do not determine to obtain described undetected threshold value, comprising if described according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and described false dismissal probability index:
If between described void inspection threshold value and described detection threshold maximum, do not determine to obtain described undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and described false dismissal probability index.
The detection system of 13. 1 kinds of Long Term Evolution LTE targeting signals, is characterized in that, comprising:
Detection probability acquisition module, for carrying out blind Detecting to N number of subframe, obtains void inspection probability and the false dismissal probability of the LTE targeting signal in N number of subframe according to testing result;
Void picks up threshold value determination module, and for determining empty inspection threshold value according to described void inspection probability, initial examination and measurement thresholding, default step-length, sample size and empty inspection probability level, wherein, N is natural number, and N is less than or equal to described sample size;
Undetected threshold value determination module, for determining undetected threshold value according to described false dismissal probability, described void inspection threshold value, described default step-length, described sample size and false dismissal probability index;
Detection module, for detecting the LTE targeting signal in N number of subframe according to described undetected threshold value.
14. systems according to claim 13, is characterized in that, described void picks up threshold value determination module, comprising:
First detection threshold determination submodule, for when N is greater than 0, is doubly added the positive integer of described initial examination and measurement thresholding with described default step-length, obtains detection threshold when carrying out blind Detecting to N number of subframe;
Void picks up threshold value determination submodule, is defined as empty inspection threshold value for detection threshold when described void inspection probability being less than described void inspection probability level;
Wherein, when N equals 0, described detection threshold is described initial examination and measurement thresholding.
15. systems according to claim 14, is characterized in that, described void picks up threshold value determination submodule, comprising:
Empty inspection probabilistic determination unit, for judging whether described void inspection probability is less than described void inspection probability level;
Void picks up threshold value determining unit, if be less than described void inspection probability level for described void inspection probability, then the detection threshold during void of the LTE targeting signal obtained in N number of subframe inspection probability is defined as described void inspection threshold value;
If described void inspection probability is not less than described void inspection probability level, then described detection probability acquisition module carries out blind Detecting to N+1 subframe, obtains the void inspection probability of the LTE targeting signal in N+1 subframe according to testing result; The detection threshold during void of the LTE targeting signal obtained in N number of subframe inspection probability is added with described default step-length by described first detection threshold determination submodule, and the void as the LTE targeting signal obtained in N+1 subframe examines detection threshold during probability; Whether the void inspection probability that described void inspection probabilistic determination unit continues the LTE targeting signal judged in N+1 subframe is less than described void inspection probability level; If the void inspection probability of the LTE targeting signal in N+1 subframe is not less than described void inspection probability level, described detection probability acquisition module continues to carry out blind Detecting to N+2 subframe, obtains the void inspection probability of the LTE targeting signal in N+2 subframe according to testing result; The detection threshold during void of the LTE targeting signal obtained in N+1 subframe inspection probability is added with described default step-length by described first detection threshold determination submodule, and the void as the LTE targeting signal obtained in N+2 subframe examines detection threshold during probability;
Whether the void inspection probability that described void inspection probabilistic determination unit continues the LTE targeting signal judged in N+2 subframe is less than described void inspection probability level, until the void inspection probability of LTE targeting signal in N+M subframe is less than described void inspection probability level, described void is picked up threshold value determining unit and the detection threshold during void of the LTE targeting signal obtained in N+M subframe inspection probability is defined as described void inspection threshold value, wherein, M is positive integer, and N+M is less than or equal to described sample size.
16. systems according to claim 13, is characterized in that, described undetected threshold value determination module, comprising:
Second detection threshold determination submodule, for when N is greater than 0, is doubly added described void inspection threshold value with the positive integer of described default step-length, obtains detection threshold when carrying out blind Detecting to N number of subframe;
Undetected threshold value determination submodule, is defined as undetected threshold value for detection threshold when described false dismissal probability being less than described false dismissal probability index;
Wherein, when N equals 0, described detection threshold is described void inspection threshold value.
17. systems according to claim 16, is characterized in that, described undetected threshold value determination submodule, comprising:
False dismissal probability judging unit, for judging whether described false dismissal probability is less than described false dismissal probability index;
Threshold value determining unit is picked up in leakage, if be less than described false dismissal probability index for described false dismissal probability, then the detection threshold during false dismissal probability of the LTE targeting signal obtained in N number of subframe is defined as described undetected threshold value;
If described false dismissal probability is not less than described false dismissal probability index, then described detection probability acquisition module carries out blind Detecting to N+1 subframe, obtains the false dismissal probability of the LTE targeting signal in N+1 subframe according to testing result; The detection threshold during false dismissal probability of the LTE targeting signal obtained in N number of subframe is added with described default step-length by described second detection threshold determination submodule, detection threshold during false dismissal probability as the LTE targeting signal in acquisition N+1 subframe; Whether the false dismissal probability that described false dismissal probability judging unit continues the LTE targeting signal judged in N+1 subframe is less than described false dismissal probability index; If the false dismissal probability of the LTE targeting signal in N+1 subframe is not less than described false dismissal probability index, described detection probability acquisition module continues to carry out blind Detecting to N+2 subframe, obtains the false dismissal probability of the LTE targeting signal in N+2 subframe according to testing result; The detection threshold during false dismissal probability of the LTE targeting signal obtained in N+1 subframe is added with described default step-length by described second detection threshold determination submodule, detection threshold during false dismissal probability as the LTE targeting signal in acquisition N+2 subframe;
Whether the false dismissal probability that described false dismissal probability judging unit continues the LTE targeting signal judged in N+2 subframe is less than described false dismissal probability index, until the false dismissal probability of LTE targeting signal in N+M subframe is less than described false dismissal probability index, described leakage is picked up threshold value determining unit and the detection threshold during false dismissal probability of the LTE targeting signal obtained in N+M subframe is defined as described undetected threshold value, wherein, M is positive integer, and N+M is less than or equal to described sample size.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10652446B2 (en) | 2016-01-25 | 2020-05-12 | Lg Innotek Co., Ltd. | Camera module and optical apparatus |
| CN113038514A (en) * | 2021-03-24 | 2021-06-25 | 中国科学院计算技术研究所 | Self-adaptive method of 5G PRACH peak detection algorithm |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090040918A1 (en) * | 2007-06-14 | 2009-02-12 | Jing Jiang | Random Access Preamble Detection for Long Term Evolution Wireless Networks |
| CN102076006A (en) * | 2011-01-28 | 2011-05-25 | 武汉理工大学 | Method for detecting PRACH preamble signal |
| CN102238580A (en) * | 2011-08-04 | 2011-11-09 | 大唐移动通信设备有限公司 | PRACH (Physical Random Access Channel) detecting method and equipment |
| CN103687046A (en) * | 2012-09-26 | 2014-03-26 | 京信通信系统（中国）有限公司 | Detection method and apparatus of random access preamble sequence |
-
2015
- 2015-02-11 CN CN201510073824.6A patent/CN104618936B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090040918A1 (en) * | 2007-06-14 | 2009-02-12 | Jing Jiang | Random Access Preamble Detection for Long Term Evolution Wireless Networks |
| CN102076006A (en) * | 2011-01-28 | 2011-05-25 | 武汉理工大学 | Method for detecting PRACH preamble signal |
| CN102238580A (en) * | 2011-08-04 | 2011-11-09 | 大唐移动通信设备有限公司 | PRACH (Physical Random Access Channel) detecting method and equipment |
| CN103687046A (en) * | 2012-09-26 | 2014-03-26 | 京信通信系统（中国）有限公司 | Detection method and apparatus of random access preamble sequence |
Non-Patent Citations (1)
| Title |
|---|
| SUNGBONG KIM,ETC: "A Delay-Robust Random Access Preamble Detection Algorithm for LTE System", 《IEEE》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10652446B2 (en) | 2016-01-25 | 2020-05-12 | Lg Innotek Co., Ltd. | Camera module and optical apparatus |
| US11509805B2 (en) | 2016-01-25 | 2022-11-22 | Lg Innotek Co., Ltd. | Camera module with improved curing stability |
| CN113038514A (en) * | 2021-03-24 | 2021-06-25 | 中国科学院计算技术研究所 | Self-adaptive method of 5G PRACH peak detection algorithm |
| CN113038514B (en) * | 2021-03-24 | 2022-09-13 | 中国科学院计算技术研究所 | Self-adaptive method of 5G PRACH peak detection algorithm |
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|---|---|
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