CN104618936B - A kind of detection method and system of Long Term Evolution LTE targeting signals - Google Patents

A kind of detection method and system of Long Term Evolution LTE targeting signals Download PDF

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CN104618936B
CN104618936B CN201510073824.6A CN201510073824A CN104618936B CN 104618936 B CN104618936 B CN 104618936B CN 201510073824 A CN201510073824 A CN 201510073824A CN 104618936 B CN104618936 B CN 104618936B
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probability
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inspection
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targeting signals
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CN104618936A (en
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卜天
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DATANG LIANYI TECHNOLOGY Co Ltd
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    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract

The present invention provides a kind of detection method and system of LTE Preamble signals, wherein, the described method includes：Blind Detecting is carried out to N number of subframe, empty the inspection probability and false dismissal probability of the LTE targeting signals in N number of subframe are obtained according to testing result；Empty inspection threshold value is determined according to empty probability, initial detecting thresholding, default step-length, sample size and the empty inspection probability level examined, wherein, N is natural number, and N is less than or equal to the sample size；Missing inspection threshold value is determined according to the false dismissal probability, empty inspection threshold value, the default step-length, the sample size and the false dismissal probability index；The LTE targeting signals in N number of subframe are detected according to the missing inspection threshold value.The present invention can be directed to the radio-frequency performance of different terminals, adaptively determine the empty inspection threshold value for meeting empty inspection requirement and the missing inspection threshold value for meeting missing inspection requirement, ensure LTE protocol uniformity test platform to the consistent of Preamble signal detection performances.

Description

A kind of detection method and system of Long Term Evolution LTE targeting signals
Technical field
The present invention relates to field of communication technology, more particularly to a kind of detection side of Long Term Evolution LTE targeting signals Method and system.
Background technology
The detection performance of Long Term Evolution (Long Term Evolution, LTE) leading (Preamble) signal is being assisted Provided in view 3GPP 36.141, limited by two parameters：Void inspection probability (Pfa) and detection probability (Pd), and require Void 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 one of parameter index Cause, define false dismissal probability (Pfd), Pfd=1-Pd, then the detection performance of LTE Preamble signals can be by void inspection probability (Pfa) 0.1% is not higher than, and false dismissal probability (Pfd) carries out equivalent description not higher than 1%.
The Preamble forms that LTE is supported are as shown in table 1.Parameter therein is defined by agreement 3GPP 36.211, its In, Ts is the minimum interval of LTE system, is 1/30.72*10^6s, Tcp is cyclic prefix (Cyclic Prefix, CP) Length, Tseq be preamble sequences Payload (payload) length, i.e. the entire length of premble sequences is Tcp +Tseq。
Preamble forms TCP TSEQ
0 3168·Ts 24576·Ts
1 21024·Ts 24576·Ts
2 6240·Ts 2·24576·Ts
3 21024·Ts 2·24576·Ts
4 448·Ts 4096·Ts
Table 1
Each cell of LTE has the targeting sequencing that 64 preamble sequences can be used as random access, due to being pair Preamble sequences carry out blind Detecting, so needing default detection threshold in receiving terminal, TH are set to, when the signal of blind Detecting exceedes During TH, on the contrary judgement detects preamble signals, then nothing, after to all 64 preamble sequences progress blind Detectings, Export this detection as a result, existing LTE Preamble signal detection flows are as shown in Figure 1.
Judge whether that down trigger detects preamble sequences, if it is not, then continuing to determine whether that down trigger detects Preamble sequences；If so, signal is sampled on Preamble Opportunity, Preamble Opportunity Refer to Preamble signals subframe that may be present, be what terminal was independently sent since preamble sequences are blind Detectings, Network side carries out blind Detecting on each Preamble Opportunity to preamble sequences, if detecting, then it is assumed that Terminal is sent, if can't detect, then it is assumed that terminal is not sent.Detection threshold TH, i=0, n=0, D (n)=Null are set, its In, i is defined as preamble sequence index, and value range is 0~63；N is defined as the detection counter of preamble signals, when When detecting preamble signals, n++；If it is not detected by preamble signals, n=0 in whole detection process；D (n) is defined It is if preamble signals as a result, for example, detecting 2 preamble signals, sequence in whole detection process for what is detected Index is respectively 2 and 7, then n ∈ { 1,2 }, D (1)=2, D (2)=7；If preamble letters are not detected by whole detection process Number, then n=0, D (0)=null.Correlation is carried out for the preamble sequence pairs sampled signal of i using index, calculates its extreme value P, Judging whether P is more than TH, if being not more than, determine to be not detected by preamble sequences, i=i+1 judges whether i is less than or equal to 63, If it is not, output D (n)；If so, carrying out correlation using index for the preamble sequence pairs sampled signal of i=i+1, extreme value is calculated, Continue to judge the circulate operation whether p is more than TH；If more than determining to detect preamble sequences, index as i, n=n+1, D (n)=i, i=i+1, judges whether i is less than or equal to 63, if it is not, output D (n)；If so, the use of index is i=i+1's Preamble sequence pairs sampled signal carries out related, calculating extreme value, continues to judge the circulate operation whether p is more than TH.
For different terminals, its bottom is made an uproar, intermediate frequency local oscillator leakage and Preamble signals launch mass all there is Difference, therefore, existing LTE Preamble signal detection flows, if using fixed detection threshold TH, may cause LTE Empty inspection and missing inspection performance of the Conformance Testing Environment to different terminals transmission preamble signals are inconsistent, so as to cause not With the inconsistent of terminal room test result, the reliability of LTE protocol uniformity test is reduced.
The content of the invention
The present invention provides a kind of detection method and system of LTE Preamble signals, to solve existing LTE Preamble signal detecting methods cause the inconsistent of test result between different terminals, reduce LTE protocol uniformity test The problem of reliability.
To solve the above-mentioned problems, the invention discloses a kind of detection method of LTE Preamble signals, including：To N A subframe carries out blind Detecting, and empty the inspection probability and false dismissal probability of the LTE targeting signals in N number of subframe are obtained according to testing result； Empty inspection threshold value is determined according to empty probability, initial detecting thresholding, default step-length, sample size and the empty inspection probability level examined, Wherein, N is natural number, and N is less than or equal to the sample size；According to the false dismissal probability, the empty inspection threshold value, described default Step-length, the sample size and false dismissal probability index determine missing inspection threshold value；According to the missing inspection threshold value in N number of subframe LTE targeting signals are detected.
Correspondingly, the invention also discloses a kind of detecting system of LTE Preamble signals, including：Detection probability obtains Module, for carrying out blind Detecting to N number of subframe, the empty inspection probability of the LTE targeting signals in N number of subframe is obtained according to testing result And false dismissal probability；Void inspection threshold value determining module, for according to the empty inspection probability, initial detecting thresholding, default step-length, sample Quantity and empty inspection probability level determine empty inspection threshold value, wherein, N is natural number, and N is less than or equal to the sample size；Missing inspection door Limit value determining module, for according to the false dismissal probability, the empty inspection threshold value, the default step-length, the sample size and False dismissal probability index determines missing inspection threshold value；Detection module, before according to the missing inspection threshold value to the LTE in N number of subframe Signal is led to be detected.
Compared with background technology, the present invention includes advantages below：
The Preamble Opportunity of certain sample size are set, in sample size, to N number of Preamble Opportunity carries out blind Detecting, obtains the empty of the LTE Preamble signals in N number of Preamble Opportunity and examines generally Rate and false dismissal probability；Probability, false dismissal probability, the initial threshold of setting, default step-length and the sample size of setting are examined according to empty, Determine empty inspection threshold value and missing inspection threshold value, LTE Preamble signals are detected using the missing inspection threshold value determined Operation.
Technical solution of the present invention can be directed to the radio-frequency performance of different terminals, adaptively determine and be met empty inspection requirement The empty inspection threshold values of LTE Preamble and meet the LTE Preamble missing inspection threshold values of missing inspection requirement, utilize what is determined Missing inspection threshold value is detected LTE Preamble signals, ensures LTE protocol uniformity test platform to Preamble signals Detection performance it is consistent.
Brief description of the drawings
Fig. 1 is existing LTE Preamble signal detection flow charts in background technology；
Fig. 2 is the step flow chart that empty inspection threshold T H_init is determined in the embodiment of the present invention；
Fig. 3 is the step flow chart that missing inspection threshold T H_final is determined in the embodiment of the present invention；
Fig. 4 is that the empty inspection of LTE Preamble signals and the inconsistent implementation procedure of missing inspection performance are solved in the embodiment of the present invention Flow chart；
Fig. 5 is a kind of detection method flow chart of steps of LTE Preamble signals in the embodiment of the present invention one；
Fig. 6 is a kind of detection method flow chart of steps of LTE Preamble signals in the embodiment of the present invention two；
Fig. 7 is a kind of detecting system structure chart of LTE Preamble signals in the embodiment of the present invention three；
Fig. 8 is a kind of detecting system structure chart of LTE Preamble signals in the embodiment of the present invention four.
Embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, it is below in conjunction with the accompanying drawings and specific real Applying mode, the present invention is described in further detail.
, it is necessary to which technical solution determines that LTE Preamble believe according to the present invention before LTE protocol uniformity test starts Number required detection threshold TH of detection, the adaptive of thresholding TH is detected according to the otherness of the radio-frequency performance of measured terminal Adjustment, so as to farthest ensure the reliability of LTE protocol uniformity test.When detection threshold TH adaptively adjust completion with Afterwards, you can proceed by LTE protocol uniformity test.The execution flow of technical solution of the present invention is as described below：
After the completion of the prevention at radio-frequency port of measured terminal is connected with LTE protocol uniformity test platform, pass through space interface signaling stream Process control measured terminal enters RRC_IDLE states, i.e. the radio-frequency module of measured terminal is in open state but does not send any letter Number, at this time, what LTE protocol uniformity test platform detected on Preamble Opportunity is exactly measured terminal radio frequency The bottom of module is made an uproar reveals with intermediate frequency local oscillator.Under such condition, detection threshold TH is increased with fixed step-length, is in sample space In the case of 10000 Preamble Opportunity, ensure that empty inspection probability is less than 0.1%, TH values at this time are denoted as TH_ init.If TH_init can not be obtained between the theoretical maximum TH_MAX of TH=0 and TH, TH values are arranged to LTE protocol The factory-default TH_ORIN of uniformity test platform.
Wherein, fixed step-length can determine in requirement of the technical solution to precision and efficiency of detecting according to the present invention, for example, Fixed step-length could be provided as 0.1dB.
In the presence of above-mentioned TH_init, RRC_CONNECTION states are entered by space interface signaling Row control measured terminal, And Preamble signals are persistently sent using space interface signaling control measured terminal, at this time, LTE protocol uniformity test platform exists What is detected on Preamble Opportunity is exactly the Preamble signals that measured terminal radio-frequency module is launched.With above-mentioned Fixed step-length increase detection threshold TH_init, the situation in sample space for 10000 Preamble Opportunity Under, ensure that false dismissal probability is less than 1%, TH values at this time are denoted as TH_final.If in the theoretical maximum TH_ of TH_init and TH TH_final can not be obtained between MAX, then TH values are arranged to the factory-default TH_ of LTE protocol uniformity test platform ORIN。
After determining to draw detection threshold TH, the value of TH is assigned to " TH " shown in Fig. 1 flows, you can proceed by LTE protocol uniformity test.
In the above process, the step of determining TH_init, is as shown in Figure 2：Control terminal enters RRC_IDLE states, sets TH_ The initial value of init is 0, sets the maximum of T H_MAX of TH, and the factory-default TH_ORIG of TH, and setting counter s's is first The initial value for the sample size c (being set to 1000) that initial value is 0, Preamble Opportunity is 0, c Preamble In Opportunity, the quantity of the Preamble signals detected on each Preamble Opportunity is F (s), its In, numerically s is identical with c.Judge whether c is less than 1000, if c is not less than 1000, judge 1000 Preamble Whether the empty inspection probability of Opportunity is less than 0.1%, is represented using sum (F (s-1))/1000 ＜ 0.1%, if 1000 The empty inspection probability of Preamble Opportunity is less than 0.1%, then exports TH_init, flow terminates.If above-mentioned c is less than 1000, then detection threshold TH=TH_init is set, the value of TH is assigned to " TH " shown in Fig. 1 flows, obtains D (n), F (s) =n, s=s+1, c=c+1, continues to judge whether c is less than 1000.If the void of above-mentioned 1000 Preamble Opportunity Examine probability and be not less than 0.1%, then TH_init=TH_init+0.1, wherein, 0.1 fixed step size to set, judges TH_init Whether it is less than TH_MAX, if TH_init is not less than TH_MAX, sets TH=TH_ORIN, TH_init=Null, flow knot Beam.If TH_init is less than TH_MAX, re-executed from the step of setting s, c and F (s).
In the above process, the step of determining TH_final, is as shown in Figure 3：After above-mentioned definite TH_init, TH_ is judged Whether init is empty, that is, judges whether TH_init is equal to Null, if TH_init=Null, flow terminates.If TH_init is not Equal to Null, then control terminal enters RRC_CONNECTION states, sets the initial value of TH_final as TH_init, sets TH_ MAX and TH_ORIG, sets the initial value of counter s as the sample size c (being set to 1000) of 0, Preamble Opportunity Initial value in 0, c Preamble Opportunity, to be detected on each Preamble Opportunity The quantity of Preamble signals is F (s), judges whether c is less than 1000, if c is not less than 1000, judges 1000 Preamble Whether the false dismissal probability of Opportunity is more than or equal to 0 and less than 1%, utilizes 0≤1-sum (F (s-1))/1000 ＜, 1% tables Show, if the false dismissal probability of 1000 Preamble Opportunity is more than or equal to 0 and less than 1%, export TH_final, flow Journey terminates.If above-mentioned c is less than 1000, detection threshold TH=TH_final is set, the value of TH is assigned shown in Fig. 1 flows " TH ", obtains D (n), F (s)=n, s=s+1, c=c+1, continues to judge whether c is less than 1000.If above-mentioned 1000 The false dismissal probability of Preamble Opportunity is not more than equal to 0, or not less than 1%, then TH_final=TH_final+ 0.1, wherein, 0.1 fixed step size to set, 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, and flow terminates.If TH_final is less than TH_MAX, from setting s, The step of c and F (s), re-executes.
The empty inspection of LTE Preamble signals and the inconsistent execution of missing inspection performance are adaptively solved in technical solution of the present invention Process is as shown in Figure 4：Determine TH_init, judge whether TH_init is empty, if TH_init is sky, TH=TH_ORIG is assigned It is worth to " TH " shown in Fig. 1 flows, and exports " there may be inconsistent for Preamble detections ", flow terminates.If TH_init It is not sky, judges whether TH_final is empty, if TH_final is sky, TH=TH_ORIG is assigned to shown in Fig. 1 flows " TH ", and export " Preamble detection there may be inconsistent ", flow terminates.If TH_final is not sky, by TH= TH_final is assigned to " TH " shown in Fig. 1 flows, and flow terminates.
In conclusion technical solution of the present invention can be when that can not determine detection threshold TH_final, LTE protocol is consistent Property test platform factory set conditions may remain in the empty inspection of LTE Preamble signals and missing inspection performance；The technology of the present invention Scheme is when can adaptively determine detection threshold TH_final, it is ensured that believe for the LTE Preamble of different terminals Number empty inspection it is consistent with missing inspection property retention, so as to improve the reliability of LTE protocol uniformity test.
A kind of LTE Preamble signals provided by the invention are discussed in detail below by several specific embodiments are enumerated Detection method and system.
Embodiment one
A kind of detection method of LTE Preamble signals provided in an embodiment of the present invention is discussed in detail.
With reference to Fig. 5, a kind of detection method flow chart of steps of LTE Preamble signals in the embodiment of the present invention is shown.
Step 100, blind Detecting is carried out to N number of subframe, the LTE targeting signals in N number of subframe is obtained according to testing result Void inspection probability and false dismissal probability.
The N is natural number, and N can be sequentially increased since 0.
The subframe can be Preamble Opportunity.
The false dismissal probability can subtract detection probability by 1 and obtain.
With the increase of above-mentioned N, often increase the blind Detecting of a Preamble Opportunity, one can be obtained newly Empty inspection probability and false dismissal probability.
Step 102, probability level is examined according to empty probability, initial detecting thresholding, default step-length, sample size and the void examined Determine empty inspection threshold value, wherein, N is less than or equal to the sample size.
With the increase of above-mentioned N, often increase the blind Detecting of a Preamble Opportunity, one can be obtained newly Empty inspection probability and false dismissal probability, it is also possible to according to the empty inspection probability of acquisition and the initial detecting thresholding of setting, default Step-length, sample size and empty inspection probability level determine a new empty inspection threshold value.Wherein, initial detecting thresholding could be provided as 0, default step-length can be set as 0.1dB, and sample size can be set as 1000, and void inspection probability level can be set as 0.1%.
The empty inspection threshold value determined is the empty inspection threshold value to meet certain requirements.This certain requirement can be： Initial detecting thresholding is increased with fixed default step-length, the feelings in sample size for 10000 Preamble Opportunity Under condition, ensure that empty inspection probability is less than empty inspection probability level 0.1%.
Step 104, according to the false dismissal probability, empty inspection threshold value, the default step-length, the sample size and the leakage Inspection probability level determines missing inspection threshold value.
Correspondingly, can also be according to the empty inspection threshold value and setting determined in the false dismissal probability of acquisition, above-mentioned steps Initial detecting thresholding, default step-length, sample size and empty inspection probability level determine a new missing inspection threshold value.Wherein, initially Detection threshold could be provided as 0, and default step-length can be set as 0.1dB, and sample size can be set as 1000, and void inspection probability refers to Mark can be set as 0.1%.
Step 106, the LTE targeting signals in N number of subframe are detected according to the missing inspection threshold value.
It is described that to determine to obtain missing inspection threshold value be the missing inspection threshold value to meet certain requirements.Certain requirement can be：With The fixed empty inspection threshold value of default step-length increase, in the case where sample size is 10000 Preamble Opportunity, Ensure that false dismissal probability is less than false dismissal probability index 1%.
In conclusion in the technical solution of the embodiment of the present invention, the Preamble of certain sample size is set Opportunity, in sample size, carries out blind Detecting to N number of Preamble Opportunity, obtains N number of Preamble Empty the inspection probability and false dismissal probability of LTE Preamble signals in Opportunity；According to void inspection probability, false dismissal probability, set The sample size of fixed initial threshold, default step-length and setting, determines empty inspection threshold value and missing inspection threshold value, using determining To missing inspection threshold value operation is detected to LTE Preamble signals.
Technical solution of the present invention can be directed to the radio-frequency performance of different terminals, adaptively determine and be met empty inspection requirement The empty inspection threshold values of LTE Preamble and meet the LTE Preamble missing inspection threshold values of missing inspection requirement, utilize what is determined Missing inspection threshold value is detected LTE Preamble signals, ensures LTE protocol uniformity test platform to Preamble signals Detection performance it is consistent.
Embodiment two
A kind of detection method of LTE Preamble signals provided in an embodiment of the present invention is discussed in detail.
With reference to Fig. 6, a kind of detection method flow chart of steps of LTE Preamble signals in the embodiment of the present invention is shown.
Step 200, blind Detecting is carried out to N number of subframe, the LTE targeting signals in N number of subframe is obtained according to testing result Void inspection probability and false dismissal probability.
The N is natural number, and N can be sequentially increased since 0.
The subframe can be Preamble Opportunity.
The false dismissal probability can subtract detection probability by 1 and obtain.
With the increase of above-mentioned N, often increase the blind Detecting of a Preamble Opportunity, one can be obtained newly Empty inspection probability and false dismissal probability.
Step 202, probability level is examined according to empty probability, initial detecting thresholding, default step-length, sample size and the void examined Determine empty inspection threshold value, wherein, N is less than or equal to the sample size.
With the increase of above-mentioned N, often increase the blind Detecting of a Preamble Opportunity, one can be obtained newly Empty inspection probability and false dismissal probability, it is also possible to according to the empty inspection probability of acquisition and the initial detecting thresholding of setting, default Step-length, sample size and empty inspection probability level determine a new empty inspection threshold value.Wherein, initial detecting thresholding could be provided as 0, default step-length can be set as 0.1dB, and sample size can be set as 1000, and void inspection probability level can be set as 0.1%.
The empty inspection threshold value determined is the empty inspection threshold value to meet certain requirements.This certain requirement can be： Initial detecting thresholding is increased with fixed default step-length, the feelings in sample size for 10000 Preamble Opportunity Under condition, ensure that empty inspection probability is less than empty inspection probability level 0.1%.
Preferably, the step 202 can include：
Sub-step 2021, determines to carry out blind Detecting to N number of subframe according to the initial detecting thresholding and the default step-length When detection threshold, wherein, N be more than 0, when N be equal to 0 when, the detection threshold is the initial detecting thresholding.
Preferably, the sub-step 2021 can be：When N is more than 0, by the initial detecting thresholding and the default step Long positive integer times are added, and obtain carrying out N number of subframe detection threshold during blind Detecting.
Sub-step 2022, is determined as empty inspection door by the empty detection threshold examined when probability is less than the empty inspection probability level Limit value.
Preferably, the sub-step 2022 can include：
Step 221, judge whether the empty inspection probability is less than the empty inspection probability level；If being less than, step is performed 222；If being not less than, step 223 is performed.
Detection threshold when step 222, by the empty inspection probability of the LTE targeting signals obtained in N number of subframe is determined as described Void inspection threshold value.
Step 223, blind Detecting is carried out to N+1 subframe, the leading letters of LTE in N+1 subframe is obtained according to testing result Number empty inspection probability, and detection threshold during according to the empty inspection probability of the LTE targeting signals obtained in N number of subframe and described default Step-length, the definite void for obtaining the LTE targeting signals in N+1 subframe examine detection threshold during probability.
Detection threshold and the default step when wherein, according to the empty inspection probability of the LTE targeting signals obtained in N number of subframe Long, the process of detection threshold when determining to obtain the empty inspection probability of the LTE targeting signals in N+1 subframe can be：
The detection threshold when void of the LTE targeting signals obtained in N number of subframe is examined probability is added with the default step-length, Void as the LTE targeting signals obtained in N+1 subframe examines detection threshold during probability.
Step 224, continue to judge whether the empty inspection probability of the LTE targeting signals in N+1 subframe is general less than the empty inspection Rate index；If being not less than, continue to carry out blind Detecting to N+2 subframe, before the LTE in N+2 subframe is obtained according to testing result Detection threshold and institute when leading the empty inspection probability of signal, and probability is examined according to the LTE targeting signals obtained in N+1 subframe empty Default step-length is stated, the definite void for obtaining the LTE targeting signals in N+2 subframe examines detection threshold during probability.
Detection threshold when wherein, according to the empty inspection probability of the LTE targeting signals obtained in N+1 subframe and described preset Step-length, the process of detection threshold when determining to obtain the empty inspection probability of the LTE targeting signals in N+2 subframe can be：
Detection threshold and the default step-length phase when LTE targeting signals obtained in N+1 subframe empty examined probability Add, the void as the LTE targeting signals obtained in N+2 subframe examines detection threshold during probability.
Step 225, continue to judge whether the empty inspection probability of the LTE targeting signals in N+2 subframe is general less than the empty inspection Rate index, until the empty inspection probability of the LTE targeting signals in N+M subframe is less than the void and examines probability level, will obtain N+M Detection threshold during the empty inspection probability of the LTE targeting signals in subframe is determined as the empty inspection threshold value, wherein, M is positive integer, N+M is less than or equal to the sample size.
Step 204, according to the false dismissal probability, empty inspection threshold value, the default step-length, the sample size and the leakage Inspection probability level determines missing inspection threshold value.
Correspondingly, can also be according to the empty inspection threshold value and setting determined in the false dismissal probability of acquisition, above-mentioned steps Initial detecting thresholding, default step-length, sample size and empty inspection probability level determine a new missing inspection threshold value.Wherein, initially Detection threshold could be provided as 0, and default step-length can be set as 0.1dB, and sample size can be set as 1000, and void inspection probability refers to Mark can be set as 0.1%.
Preferably, the step 204 can include：
Sub-step 2041, when determining to carry out blind Detecting to N number of subframe according to the empty inspection threshold value and the default step-length Detection threshold, wherein, N is more than 0, and when N is equal to 0, the detection threshold empty examines threshold value to be described.
Preferably, the sub-step 2041 can be：
When N is more than 0, the empty threshold value of examining is added with the positive integer times of the default step-length, is obtained to N number of subframe Carry out detection threshold during blind Detecting.
Sub-step 2042, the detection threshold when false dismissal probability is less than the false dismissal probability index are determined as missing inspection door Limit value.
Preferably, the sub-step 2042 can include：
Step 421, judge whether the N false dismissal probabilities are less than the false dismissal probability index, if being less than, perform step 422；If being not less than, step 423. is performed
Detection threshold when step 422, by the false dismissal probability of the LTE targeting signals obtained in N number of subframe is determined as described Missing inspection threshold value.
Step 423, blind Detecting is carried out to N+1 subframe, the leading letters of LTE in N+1 subframe is obtained according to testing result Number false dismissal probability, and detection threshold during according to the false dismissal probability for obtaining the LTE targeting signals in N number of subframe and described default Step-length, detection threshold when determining to obtain the false dismissal probability of the LTE targeting signals in N+1 subframe.
Detection threshold and the default step when wherein, according to the false dismissal probability for obtaining the LTE targeting signals in N number of subframe Long, the process of detection threshold when determining to obtain the false dismissal probability of the LTE targeting signals in N+1 subframe can be：
Detection threshold during by the false dismissal probabilities of the LTE targeting signals obtained in N number of subframe is added with the default step-length, Detection threshold during as the false dismissal probability for obtaining the LTE targeting signals in N+1 subframe.
Step 424, continue to judge whether the false dismissal probability of the LTE targeting signals in N+1 subframe is general less than the missing inspection Rate index；If being not less than, continue to carry out blind Detecting to N+2 subframe, before the LTE in N+2 subframe is obtained according to testing result Lead the false dismissal probability of signal, and detection threshold during according to the false dismissal probability for obtaining the LTE targeting signals in N+1 subframe and institute Default step-length is stated, detection threshold when determining to obtain the false dismissal probability of the LTE targeting signals in N+2 subframe.
Wherein, according to obtain N+1 subframe in LTE targeting signals false dismissal probability when detection threshold and it is described preset Step-length, the process of detection threshold when determining to obtain the false dismissal probability of the LTE targeting signals in N+2 subframe can be：
By obtain N+1 subframe in LTE targeting signals false dismissal probability when detection threshold and the default step-length phase Add, as obtain N+2 subframe in LTE targeting signals false dismissal probability when detection threshold.
Step 425, continue to judge whether the false dismissal probability of the LTE targeting signals in N+2 subframe is general less than the missing inspection Rate index, until the false dismissal probability of the LTE targeting signals in N+M subframe is less than the false dismissal probability index, will obtain N+M The detection threshold during false dismissal probability of the LTE targeting signals in subframe is determined as the missing inspection threshold value, wherein, M is positive integer, N+M is less than or equal to the sample size.
Step 206, the LTE targeting signals in N number of subframe are detected according to the missing inspection threshold value.
It is described that to determine to obtain missing inspection threshold value be the missing inspection threshold value to meet certain requirements.Certain requirement can be：With The fixed empty inspection threshold value of default step-length increase, in the case where sample size is 10000 Preamble Opportunity, Ensure that false dismissal probability is less than false dismissal probability index 1%.
Preferably, if according to the empty inspection probability, the initial detecting thresholding, the default step-length, the sample size Do not determine to obtain the empty inspection threshold value with the empty inspection probability level, if alternatively, according to the false dismissal probability, the empty inspection door Limit value, the default step-length, the sample size and the false dismissal probability index do not determine to obtain the missing inspection threshold value, then root LTE targeting signals are detected according to void inspection thresholding default value.
That is, between the initial detecting thresholding and detection threshold maximum, according to the empty probability, described examined Initial detecting thresholding, the default step-length, the sample size and the empty inspection probability level do not determine to obtain the empty inspection door Limit value, alternatively, between the empty inspection threshold value and the detection threshold maximum, according to the false dismissal probability, the empty inspection Threshold value, the default step-length, the sample size and the false dismissal probability index do not determine to obtain the missing inspection threshold value, then LTE targeting signals are detected according to void inspection thresholding default value.
In conclusion in the technical solution of the embodiment of the present invention, the Preamble of certain sample size is set Opportunity, in sample size, carries out blind Detecting to N number of Preamble Opportunity, obtains N number of Preamble Empty the inspection probability and false dismissal probability of LTE Preamble signals in Opportunity；According to void inspection probability, false dismissal probability, set The sample size of fixed initial threshold, default step-length and setting, determines empty inspection threshold value and missing inspection threshold value, using determining To missing inspection threshold value operation is detected to LTE Preamble signals.
Technical solution of the present invention can be directed to the radio-frequency performance of different terminals, adaptively determine and be met empty inspection requirement The empty inspection threshold values of LTE Preamble and meet the LTE Preamble missing inspection threshold values of missing inspection requirement, utilize what is determined Missing inspection threshold value is detected LTE Preamble signals, ensures LTE protocol uniformity test platform to Preamble signals Detection performance it is consistent.
Technical solution of the present invention can ensure when can not adaptively determine the detection threshold of LTE Preamble signals LTE protocol uniformity test platform is identical with existing technical solution to the empty inspection of Preamble signals and missing inspection performance.
Embodiment three
A kind of detecting system of LTE Preamble signals provided in an embodiment of the present invention is discussed in detail.
With reference to Fig. 7, a kind of detecting system structure chart of LTE Preamble signals in the embodiment of the present invention is shown.
The system can include：Detection probability acquisition module 300, void inspection threshold value determining module 302, missing inspection threshold value Determining module 304, detection module 306.
Be discussed in detail separately below each module function and each module between relation.
Detection probability acquisition module 300, for carrying out blind Detecting to N number of subframe, obtains in N number of subframe according to testing result LTE targeting signals empty inspection probability and false dismissal probability.
Void inspection threshold value determining module 302, for according to the empty inspection probability, initial detecting thresholding, default step-length, sample Quantity and empty inspection probability level determine empty inspection threshold value, wherein, N is natural number, and N is less than or equal to the sample size.
Missing inspection threshold value determining module 304, for according to the false dismissal probability, the empty inspection threshold value, the default step Long, described sample size and false dismissal probability index determine missing inspection threshold value.
Detection module 306, for being detected according to the missing inspection threshold value to the LTE targeting signals in N number of subframe.
In conclusion in the technical solution of the embodiment of the present invention, the Preamble of certain sample size is set Opportunity, in sample size, carries out blind Detecting to N number of Preamble Opportunity, obtains N number of Preamble Empty the inspection probability and false dismissal probability of LTE Preamble signals in Opportunity；According to void inspection probability, false dismissal probability, set The sample size of fixed initial threshold, default step-length and setting, determines empty inspection threshold value and missing inspection threshold value, using determining To missing inspection threshold value operation is detected to LTE Preamble signals.
Technical solution of the present invention can be directed to the radio-frequency performance of different terminals, adaptively determine and be met empty inspection requirement The empty inspection threshold values of LTE Preamble and meet the LTE Preamble missing inspection threshold values of missing inspection requirement, utilize what is determined Missing inspection threshold value is detected LTE Preamble signals, ensures LTE protocol uniformity test platform to Preamble signals Detection performance it is consistent.
Example IV
A kind of detecting system of LTE Preamble signals provided in an embodiment of the present invention is discussed in detail.
With reference to Fig. 8, a kind of detecting system structure chart of LTE Preamble signals in the embodiment of the present invention is shown.
The system can include：Detection probability acquisition module 400, void inspection threshold value determining module 402, missing inspection threshold value Determining module 404, detection module 406.
Wherein, the empty inspection threshold value determining module 402 can include：First detection threshold determination sub-module 4021, it is empty Examine threshold value determination sub-module 4022.
The empty inspection threshold value determination sub-module 4022 can include：Void inspection probabilistic determination unit, void inspection threshold value determine Unit.
The missing inspection threshold value determining module 404 can include：Second detection threshold determination sub-module 4041, missing inspection thresholding It is worth determination sub-module 4042.
The missing inspection threshold value determination sub-module 4042 can include：False dismissal probability judging unit, missing inspection threshold value determine Unit.
Each module, each submodule, the function of each unit and each module, each submodule, each list are discussed in detail separately below Relation between member.
Detection probability acquisition module 400, for carrying out blind Detecting to N number of subframe, obtains in N number of subframe according to testing result LTE targeting signals empty inspection probability and false dismissal probability.
Void inspection threshold value determining module 402, for according to the empty inspection probability, initial detecting thresholding, default step-length, sample Quantity and empty inspection probability level determine empty inspection threshold value, wherein, N is natural number, and N is less than or equal to the sample size.
Preferably, the empty inspection threshold value determining module 402 can include：
First detection threshold determination sub-module 4021, for when N be more than 0 when, by the initial detecting thresholding with it is described pre- If the positive integer times of step-length are added, obtain carrying out N number of subframe detection threshold during blind Detecting.
Void examines threshold value determination sub-module 4022, for the empty inspection probability to be less than to inspection during the empty inspection probability level Survey thresholding and be determined as empty inspection threshold value.Wherein, when N is equal to 0, the detection threshold is the initial detecting thresholding.
Preferably, the empty inspection threshold value determination sub-module 4022 can include：
Void examines probabilistic determination unit, for judging whether the empty inspection probability is less than the empty inspection probability level.
Void examines threshold value determination unit, if being less than the empty inspection probability level for the empty inspection probability, will obtain N number of Detection threshold during the empty inspection probability of the LTE targeting signals in subframe is determined as the empty inspection threshold value.
If the empty inspection probability is not less than the empty inspection probability level, the detection probability acquisition module 400 is to N+1 Subframe carries out blind Detecting, and the empty inspection probability of the LTE targeting signals in N+1 subframe is obtained according to testing result；First inspection Detection threshold when surveying thresholding determination sub-module 4021 by the empty inspection probability of the LTE targeting signals obtained in N number of subframe with it is described Default step-length is added, and the void as the LTE targeting signals obtained in N+1 subframe examines detection threshold during probability；The empty inspection Probabilistic determination unit continues to judge whether the empty inspection probability of the LTE targeting signals in N+1 subframe is less than the empty probability of examining and refers to Mark；If the empty inspection probability of the LTE targeting signals in N+1 subframe is obtained not less than the empty inspection probability level, the detection probability Modulus block 400 continues to carry out blind Detecting to N+2 subframe, and the LTE targeting signals in N+2 subframe are obtained according to testing result Void inspection probability；The first detection threshold determination sub-module 4021 is general by the empty inspection of the LTE targeting signals obtained in N+1 subframe Detection threshold during rate is added with the default step-length, when the void as the LTE targeting signals obtained in N+2 subframe examines probability Detection threshold.
The empty inspection probabilistic determination unit continues to judge whether the empty inspection probability of the LTE targeting signals in N+2 subframe is small In the empty inspection probability level, until the empty inspection probability of the LTE targeting signals in N+M subframe is less than the empty probability of examining and refers to Mark, the void of the LTE targeting signals obtained in N+M subframe is examined detection threshold during probability by the empty inspection threshold value determination unit It is determined as the empty inspection threshold value, wherein, M is positive integer, and N+M is less than or equal to the sample size.
Missing inspection threshold value determining module 404, for according to the false dismissal probability, the empty inspection threshold value, the default step Long, described sample size and false dismissal probability index determine missing inspection threshold value.
Preferably, the missing inspection threshold value determining module 404 can include：
Second detection threshold determination sub-module 4041, for when N is more than 0, the empty threshold value of examining to be preset with described The positive integer times of step-length are added, and obtain carrying out N number of subframe detection threshold during blind Detecting.
Missing inspection threshold value determination sub-module 4042, for the false dismissal probability to be less than to the inspection during false dismissal probability index Survey thresholding and be determined as missing inspection threshold value；Wherein, when N is equal to 0, the detection threshold is the empty inspection threshold value.
Preferably, the missing inspection threshold value determination sub-module 4042 can include：
False dismissal probability judging unit, for judging whether the false dismissal probability is less than the false dismissal probability index.
Missing inspection threshold value determination unit, if being less than the false dismissal probability index for the false dismissal probability, will obtain N number of The detection threshold during false dismissal probability of the LTE targeting signals in subframe is determined as the missing inspection threshold value.
If the false dismissal probability is not less than the false dismissal probability index, the detection probability acquisition module 400 is to N+1 Subframe carries out blind Detecting, and the false dismissal probability of the LTE targeting signals in N+1 subframe is obtained according to testing result；Second inspection Detection threshold when surveying thresholding determination sub-module 4041 by the false dismissal probabilities of the LTE targeting signals obtained in N number of subframe with it is described Default step-length is added, detection threshold during as the false dismissal probability for obtaining the LTE targeting signals in N+1 subframe；The missing inspection Probabilistic determination unit continues to judge whether the false dismissal probability of the LTE targeting signals in N+1 subframe refers to less than the false dismissal probability Mark；If the false dismissal probability of the LTE targeting signals in N+1 subframe is not less than the false dismissal probability index, the detection probability obtains Modulus block 400 continues to carry out blind Detecting to N+2 subframe, and the LTE targeting signals in N+2 subframe are obtained according to testing result False dismissal probability；The second detection threshold determination sub-module 4041 is general by the missing inspection of the LTE targeting signals obtained in N+1 subframe Detection threshold during rate is added with the default step-length, as obtain N+2 subframe in LTE targeting signals false dismissal probability when Detection threshold.
The false dismissal probability judging unit continues to judge whether the false dismissal probability of the LTE targeting signals in N+2 subframe is small In the false dismissal probability index, until the false dismissal probability of the LTE targeting signals in N+M subframe refers to less than the false dismissal probability Mark, the missing inspection threshold value determination unit by obtain N+M subframe in LTE targeting signals false dismissal probability when detection threshold It is determined as the missing inspection threshold value, wherein, M is positive integer, and N+M is less than or equal to the sample size.
Detection module 406, for being detected according to the missing inspection threshold value to the LTE targeting signals in N number of subframe.
Preferably, the system also includes：
Threshold detection module is given tacit consent to, if for according to the empty inspection probability, the initial detecting thresholding, the default step Long, described sample size and the empty inspection probability level do not determine to obtain the empty inspection threshold value, if alternatively, according to the missing inspection Probability, empty inspection threshold value, the default step-length, the sample size and the false dismissal probability index do not determine to obtain described Missing inspection threshold value, then be detected LTE targeting signals according to void inspection thresholding default value.
Preferably, it is if described according to the empty inspection probability, the initial detecting thresholding, the default step-length, the sample Quantity and the empty inspection probability level do not determine to obtain the empty inspection threshold value, can include：
If between the initial detecting thresholding and detection threshold maximum, according to the empty inspection probability, the initial inspection Thresholding, the default step-length, the sample size and the empty inspection probability level is surveyed not determine to obtain the empty inspection threshold value.
Preferably, if it is described according to the false dismissal probability, the empty inspection threshold value, the default step-length, the sample number Amount and the false dismissal probability index do not determine to obtain the missing inspection threshold value, can include：
If between the empty inspection threshold value and the detection threshold maximum, according to the false dismissal probability, the empty inspection Threshold value, the default step-length, the sample size and the false dismissal probability index do not determine to obtain the missing inspection threshold value.
In conclusion in the technical solution of the embodiment of the present invention, the Preamble of certain sample size is set Opportunity, in sample size, carries out blind Detecting to N number of Preamble Opportunity, obtains N number of Preamble Empty the inspection probability and false dismissal probability of LTE Preamble signals in Opportunity；According to void inspection probability, false dismissal probability, set The sample size of fixed initial threshold, default step-length and setting, determines empty inspection threshold value and missing inspection threshold value, using determining To missing inspection threshold value operation is detected to LTE Preamble signals.
Technical solution of the present invention can be directed to the radio-frequency performance of different terminals, adaptively determine and be met empty inspection requirement The empty inspection threshold values of LTE Preamble and meet the LTE Preamble missing inspection threshold values of missing inspection requirement, utilize what is determined Missing inspection threshold value is detected LTE Preamble signals, ensures LTE protocol uniformity test platform to Preamble signals Detection performance it is consistent.
Technical solution of the present invention can ensure when can not adaptively determine the detection threshold of LTE Preamble signals LTE protocol uniformity test platform is identical with existing technical solution to the empty inspection of Preamble signals and missing inspection performance.
For system embodiment, since it is substantially similar to embodiment of the method, so description is fairly simple, it is related Part illustrates referring to the part of embodiment of the method.
Each embodiment in this specification is described by the way of progressive, what each embodiment stressed be with The difference of other embodiment, between each embodiment identical similar part mutually referring to.
The detection method and system of a kind of LTE Preamble signals provided above the embodiment of the present invention, carry out It is discussed in detail, specific case used herein is set forth the principle of the present invention and embodiment, above example Illustrate to be only intended to help the method and its core concept for understanding the present invention；Meanwhile for those of ordinary skill in the art, according to According to the thought of the present invention, there will be changes in specific embodiments and applications, in conclusion this specification content It should not be construed as limiting the invention.

Claims (11)

  1. A kind of 1. detection method of Long Term Evolution LTE targeting signals, it is characterised in that including：
    Blind Detecting is carried out to N number of subframe, empty inspection probability and the leakage of the LTE targeting signals in N number of subframe are obtained according to testing result Examine probability；
    Empty inspection thresholding is determined according to empty probability, initial detecting thresholding, default step-length, sample size and the empty inspection probability level examined Value, wherein, N is natural number, and N is less than or equal to the sample size, described empty to examine probability, initial detecting thresholding, in advance according to described If the step of step-length, sample size and empty inspection probability level determine empty inspection threshold value, including：According to the initial detecting thresholding and Detection threshold when the default step-length determines to carry out N number of subframe blind Detecting, wherein, N is more than 0；The empty inspection probability is small Detection threshold when the empty inspection probability level is determined as empty inspection threshold value；Wherein, when N is equal to 0, the detection threshold is The initial detecting thresholding；
    It is true according to the false dismissal probability, the empty inspection threshold value, the default step-length, the sample size and false dismissal probability index Determine missing inspection threshold value, it is described according to the false dismissal probability, the empty inspection threshold value, the default step-length, the sample size and False dismissal probability index determines the step of missing inspection threshold value, including：Determined according to the empty inspection threshold value and the default step-length to N A subframe carries out detection threshold during blind Detecting, wherein, N is more than 0；When the false dismissal probability is less than the false dismissal probability index Detection threshold be determined as missing inspection threshold value；Wherein, when N is equal to 0, the detection threshold is the empty inspection threshold value；
    The LTE targeting signals in N number of subframe are detected according to the missing inspection threshold value.
  2. It is 2. according to the method described in claim 1, it is characterized in that, described according to the initial detecting thresholding and the default step Long detection threshold when determining to carry out N number of subframe blind Detecting, wherein, N is more than 0, including：
    When N be more than 0 when, the initial detecting thresholding is added with the positive integer times of the default step-length, obtain to N number of subframe into Detection threshold during row blind Detecting.
  3. 3. according to the method described in claim 1, it is characterized in that, described refer to the empty probability of examining less than the empty probability of examining The detection threshold of timestamp is determined as empty inspection threshold value, including：
    Judge whether the empty inspection probability is less than the empty inspection probability level；
    If being less than, the detection threshold when void of the LTE targeting signals obtained in N number of subframe is examined probability is determined as the empty inspection door Limit value；
    If being not less than, blind Detecting is carried out to N+1 subframe, the LTE targeting signals in N+1 subframe are obtained according to testing result Void inspection probability, and detection threshold during according to the empty inspection probability of the LTE targeting signals obtained in N number of subframe and the default step Long, the definite void for obtaining the LTE targeting signals in N+1 subframe examines detection threshold during probability；
    Continue to judge whether the empty inspection probability of the LTE targeting signals in N+1 subframe is less than the empty inspection probability level；It is if not small In, continue to carry out blind Detecting to N+2 subframe, it is general according to the empty inspection of the LTE targeting signals in testing result N+2 subframe of acquisition Rate, and detection threshold when examining probability according to the LTE targeting signals obtained in N+1 subframe empty and the default step-length, really Surely detection threshold during the empty inspection probability of the LTE targeting signals in N+2 subframe is obtained；
    Continue to judge whether the empty inspection probability of the LTE targeting signals in N+2 subframe is less than the empty inspection probability level, until N+ The empty inspection probability of LTE targeting signals in M subframe is less than the empty inspection probability level, before obtaining the LTE in N+M subframe Detection threshold when leading the empty inspection probability of signal is determined as the empty inspection threshold value, wherein, M is positive integer, and N+M is less than or equal to institute State sample size.
  4. It is 4. according to the method described in claim 3, it is characterized in that, described according to the LTE targeting signals obtained in N number of subframe Detection threshold and the default step-length during void inspection probability, determine to obtain the empty inspection probability of the LTE targeting signals in N+1 subframe When detection threshold, including：
    The detection threshold when void of the LTE targeting signals obtained in N number of subframe is examined probability is added with the default step-length, as Obtain detection threshold during the empty inspection probability of the LTE targeting signals in N+1 subframe；
    Detection threshold and the default step-length during the empty inspection probability of the LTE targeting signals according in N+1 subframe of acquisition, Determine to obtain detection threshold during the empty inspection probability of the LTE targeting signals in N+2 subframe, including：
    The detection threshold when void of the LTE targeting signals obtained in N+1 subframe is examined probability is added with the default step-length, is made To obtain detection threshold during the empty inspection probability of the LTE targeting signals in N+2 subframe.
  5. It is 5. according to the method described in claim 1, it is characterized in that, described according to the empty inspection threshold value and the default step-length Determine to N number of subframe carry out blind Detecting when detection threshold, wherein, N be more than 0, including：
    When N is more than 0, the empty threshold value of examining is added with the positive integer times of the default step-length, obtains carrying out N number of subframe Detection threshold during blind Detecting.
  6. 6. according to the method described in claim 1, it is characterized in that, described refer to the false dismissal probability less than the false dismissal probability The detection threshold of timestamp is determined as missing inspection threshold value, including：
    Judge whether the false dismissal probability is less than the false dismissal probability index；
    If being less than, detection threshold during by the false dismissal probabilities of the LTE targeting signals obtained in N number of subframe is determined as the missing inspection door Limit value；
    If being not less than, blind Detecting is carried out to N+1 subframe, the LTE targeting signals in N+1 subframe are obtained according to testing result False dismissal probability, and detection threshold during according to the false dismissal probability for obtaining the LTE targeting signals in N number of subframe and the default step It is long, detection threshold when determining to obtain the false dismissal probability of the LTE targeting signals in N+1 subframe；
    Continue to judge whether the false dismissal probability of the LTE targeting signals in N+1 subframe is less than the false dismissal probability index；It is if not small In, continue to carry out blind Detecting to N+2 subframe, it is general according to the missing inspection of the LTE targeting signals in testing result N+2 subframe of acquisition Rate, and according to obtain N+1 subframe in LTE targeting signals false dismissal probability when detection threshold and the default step-length, really Surely the detection threshold during false dismissal probability of the LTE targeting signals in N+2 subframe is obtained；
    Continue to judge whether the false dismissal probability of the LTE targeting signals in N+2 subframe is less than the false dismissal probability index, until N+ The false dismissal probability of LTE targeting signals in M subframe is less than the false dismissal probability index, before the LTE that will be obtained in N+M subframe Detection threshold when leading the false dismissal probability of signal is determined as the missing inspection threshold value, wherein, M is positive integer, and N+M is less than or equal to institute State sample size.
  7. It is 7. according to the method described in claim 6, it is characterized in that, described according to the LTE targeting signals obtained in N number of subframe Detection threshold and the default step-length during false dismissal probability, determine to obtain the false dismissal probability of the LTE targeting signals in N+1 subframe When detection threshold, including：
    Detection threshold during by the false dismissal probabilities of the LTE targeting signals obtained in N number of subframe is added with the default step-length, as Obtain the detection threshold during false dismissal probability of the LTE targeting signals in N+1 subframe；
    Detection threshold and the default step-length during false dismissal probability of the LTE targeting signals according in N+1 subframe of acquisition, Detection threshold when determining to obtain the false dismissal probability of the LTE targeting signals in N+2 subframe, including：
    By obtain N+1 subframe in LTE targeting signals false dismissal probability when detection threshold be added with the default step-length, work To obtain the detection threshold during false dismissal probability of the LTE targeting signals in N+2 subframe.
  8. 8. according to the method described in claim 1, it is characterized in that, the method further includes：
    If examined generally according to empty probability, the initial detecting thresholding, the default step-length, the sample size and the void examined Rate index does not determine to obtain the empty inspection threshold value, if alternatively, according to the false dismissal probability, the empty inspection threshold value, described pre- If step-length, the sample size and the false dismissal probability index do not determine to obtain the missing inspection threshold value, then thresholding is examined according to void Default value is detected LTE targeting signals.
  9. A kind of 9. detecting system of Long Term Evolution LTE targeting signals, it is characterised in that including：
    Detection probability acquisition module, for carrying out blind Detecting to N number of subframe, before the LTE in N number of subframe is obtained according to testing result Lead empty the inspection probability and false dismissal probability of signal；
    Void inspection threshold value determining module, for according to it is described it is empty examine probability, initial detecting thresholding, default step-length, sample size and Void inspection probability level determines empty inspection threshold value, wherein, N is natural number, and N is less than or equal to the sample size, the empty inspection thresholding It is worth determining module, including：First detection threshold determination sub-module, for when N be more than 0 when, by the initial detecting thresholding and institute The positive integer times for stating default step-length are added, and obtain carrying out N number of subframe detection threshold during blind Detecting；Void inspection threshold value determines son Module, for the empty detection threshold examined when probability is less than the empty inspection probability level to be determined as empty inspection threshold value；Wherein, When N is equal to 0, the detection threshold is the initial detecting thresholding；
    Missing inspection threshold value determining module, for according to the false dismissal probability, the empty inspection threshold value, the default step-length, described Sample size and false dismissal probability index determine missing inspection threshold value, the missing inspection threshold value determining module, including：Second detection threshold Determination sub-module, for when N is more than 0, the empty threshold value of examining to be added with the positive integer times of the default step-length, obtains pair N number of subframe carries out detection threshold during blind Detecting；Missing inspection threshold value determination sub-module, it is described for the false dismissal probability to be less than Detection threshold during false dismissal probability index is determined as missing inspection threshold value；Wherein, when N is equal to 0, the detection threshold is the void Examine threshold value；
    Detection module, for being detected according to the missing inspection threshold value to the LTE targeting signals in N number of subframe.
  10. 10. system according to claim 9, it is characterised in that the empty inspection threshold value determination sub-module, including：
    Void examines probabilistic determination unit, for judging whether the empty inspection probability is less than the empty inspection probability level；
    Void examines threshold value determination unit, if being less than the empty inspection probability level for the empty inspection probability, will obtain N number of subframe Detection threshold during the empty inspection probability of interior LTE targeting signals is determined as the empty inspection threshold value；
    If the empty inspection probability not less than it is described it is empty examine probability level, the detection probability acquisition module to N+1 subframe into Row blind Detecting, the empty inspection probability of the LTE targeting signals in N+1 subframe is obtained according to testing result；First detection threshold Detection threshold and the default step-length phase when determination sub-module is by the empty inspection probability of the LTE targeting signals obtained in N number of subframe Add, the void as the LTE targeting signals obtained in N+1 subframe examines detection threshold during probability；The empty inspection probabilistic determination list Member continues to judge whether the empty inspection probability of the LTE targeting signals in N+1 subframe is less than the empty inspection probability level；If N+1 The empty inspection probability of LTE targeting signals in subframe continues not less than the empty inspection probability level, the detection probability acquisition module Blind Detecting is carried out to N+2 subframe, the empty inspection probability of the LTE targeting signals in N+2 subframe is obtained according to testing result；It is described Detection threshold when first detection threshold determination sub-module is by the empty inspection probability of the LTE targeting signals obtained in N+1 subframe and The default step-length is added, and the void as the LTE targeting signals obtained in N+2 subframe examines detection threshold during probability；
    The empty inspection probabilistic determination unit continues to judge whether the empty inspection probability of the LTE targeting signals in N+2 subframe is less than institute Empty inspection probability level is stated, up to the empty inspection probability of the LTE targeting signals in N+M subframe is less than the empty inspection probability level, institute The detection threshold when void of the LTE targeting signals obtained in N+M subframe is examined probability by empty inspection threshold value determination unit is stated to determine Threshold value is examined for the void, wherein, M is positive integer, and N+M is less than or equal to the sample size.
  11. 11. system according to claim 9, it is characterised in that the missing inspection threshold value determination sub-module, including：
    False dismissal probability judging unit, for judging whether the false dismissal probability is less than the false dismissal probability index；
    Missing inspection threshold value determination unit, if being less than the false dismissal probability index for the false dismissal probability, will obtain N number of subframe The detection threshold during false dismissal probability of interior LTE targeting signals is determined as the missing inspection threshold value；
    If the false dismissal probability is not less than the false dismissal probability index, the detection probability acquisition module to N+1 subframe into Row blind Detecting, the false dismissal probability of the LTE targeting signals in N+1 subframe is obtained according to testing result；Second detection threshold Detection threshold and the default step-length phase when determination sub-module is by the false dismissal probabilities of the LTE targeting signals obtained in N number of subframe Add, as obtain N+1 subframe in LTE targeting signals false dismissal probability when detection threshold；The false dismissal probability judges single Member continues to judge whether the false dismissal probability of the LTE targeting signals in N+1 subframe is less than the false dismissal probability index；If N+1 The false dismissal probability of LTE targeting signals in subframe is not less than the false dismissal probability index, and the detection probability acquisition module continues Blind Detecting is carried out to N+2 subframe, the false dismissal probability of the LTE targeting signals in N+2 subframe is obtained according to testing result；It is described Second detection threshold determination sub-module by obtain N+1 subframe in LTE targeting signals false dismissal probability when detection threshold and The default step-length is added, detection threshold during as the false dismissal probability for obtaining the LTE targeting signals in N+2 subframe；
    The false dismissal probability judging unit continues to judge whether the false dismissal probability of the LTE targeting signals in N+2 subframe is less than institute False dismissal probability index is stated, until the false dismissal probability of the LTE targeting signals in N+M subframe is less than the false dismissal probability index, institute State missing inspection threshold value determination unit by obtain N+M subframe in LTE targeting signals false dismissal probability when detection threshold determine For the missing inspection threshold value, wherein, M is positive integer, and N+M is less than or equal to the sample size.
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