CN102014420A - Method for assessing voice quality of mobile communication - Google Patents
Method for assessing voice quality of mobile communication Download PDFInfo
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- CN102014420A CN102014420A CN2010105498354A CN201010549835A CN102014420A CN 102014420 A CN102014420 A CN 102014420A CN 2010105498354 A CN2010105498354 A CN 2010105498354A CN 201010549835 A CN201010549835 A CN 201010549835A CN 102014420 A CN102014420 A CN 102014420A
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Abstract
The invention relates to the field of mobile communication, in particular to a method for assessing voice quality of mobile communication. The method is used for assessing the voice quality sensed by a subscriber in the voice call process of the mobile communication subscriber. The method is as follows: when a mobile communication network is adopted for calling, signallings transmitted among networks are collected, wherein related data, information and the like are carried in the signalings; and certain related data and information are utilized to assess the voice quality of the call of the mobile communication subscriber. According to the method, the assessment is not influenced by districts and other equipment, so that operators can obtain the situation of mobile communication networks timely, and persons are reasonably arranged to carry out network optimization.
Description
Technical field
The present invention relates to moving communicating field, particularly the appraisal procedure of moving communicating field speech quality provides corresponding appraisal procedure and is used for assessing the speech quality of mobile communication subscriber in user's perception of voice call process.
Background technology
Increase along with mobile communication subscriber quantity, how in real time, comprehensively, effectively assesses user conversation speech quality seems more and more important so that the problem that occurs according to speech quality in time is optimized mobile communications network mobile communication carrier more and more payes attention to the satisfaction of user's communication quality.
The speech quality evaluation can be divided into subjective assessment and objective evaluation two big classes.The quality of speech is estimated in subjective assessment with artificial main body.The advantage of subjective evaluation method is to meet when human obedient the sensation of speech quality, has obtained at present using widely.Method commonly used has mean opinion score (Mean Opinion Score, the MOS score), diagnosis rhythm word test (Diagnostic Rhyme Test, DRT score), diagnosis satisfaction measurement (Diagnostic Acceptability Measure, DAM score) etc.The subjective assessment of speech quality requires the audiometry experiment of a large amount of people, a large amount of number of times, so that can obtain generally accepted result.But because subjective assessment is wasteful, elapsed-time standards is long, so the subjective assessment of speech quality is not easy to realize.
It is the subjective evaluation method of being recommended by CCITT that MOS gets separating method, now extensively as the standard of comparison between the different system.This appraisal procedure lumps different types of distortion together, does not point out the reason of distortion, is unfavorable for the improvement of algorithm.In addition, the selection of test condition and some other factors can influence the result of MOS method.Diagnosis rhythm word method of testing is a kind of method of testing of reflection speech intelligibility or intelligibility, and it is mainly used in the quality test of low rate speech coding; Diagnosis satisfaction measurement method is to the full assessment of combining of voice quality, and it is to a kind of tolerance of the acceptance level of speech quality under multiple condition.It is more that these two kinds of methods are weighed factor, realizes comparatively complicated.
The speech quality method for objectively evaluating adopt certain specific parameter go to characterize voice by strengthen or coded system after distortion level, and come the performance quality of evaluation process system with this.Existing method for objectively evaluating all needs special equipment, can't (perhaps extremely difficult) to all users' of mobile communication conversation speech quality carry out in real time, comprehensively, effectively assessment.
Summary of the invention
The objective of the invention is to defective, provide a kind of relevant signaling data when gathering user's communication in real time, comprehensively, effectively to assess the method for mobile communication subscriber conversation speech quality at prior art.
Technical scheme of the present invention is as follows: a kind of method of assessing the mobile communication speech quality comprises the steps:
(1) obtain some the relevant signaling datas in the communication process one time, mainly comprise: whether measurement report, switching, sub-district type of coding, sub-district discontinuousness transmission mode are opened;
(2) conversation once when setting up or when switching judge whether the current sub-district that takies opens discontinuousness transmission mode; According to the unlatching situation of discontinuousness transmission mode, determine the value of signal quality Rxqual in the current calculating that takies the sub-district;
(3) obtain the average signal quality of every measurement report in the communication process, note is made avgRxqual;
(4), the avgRxqual of each bar measurement report is utilized formula A-B * e according to taking the type of coding of sub-district
K * avgRxqual+mCalculate, round downwards then and draw a desired value of describing each bar measurement report speech quality, note is made TalkQ; In the following formula, A, B, k, m are constant;
(5) article one measurement report after switching, desired value with the speech quality that switches preceding the last item measurement report is calculated by formula TalkQ-|TalkQ|*M%, then the desired value of result of calculation and current measurement report is compared, get the desired value of smaller value as current measurement report; In the following formula, M is a constant;
(6) measurement report of second and third after switching, desired value with the speech quality that switches preceding the last item measurement report is calculated by formula TalkQ-|TalkQ|*N%, then the desired value of result of calculation and current measurement report is compared, get the desired value of smaller value as current measurement report; In the following formula, N is a constant;
(7) the desired value TalkQ according to every measurement report determines speech quality, and the big more representative voice quality of desired value is good more.
Further, the method for aforesaid assessment mobile communication speech quality, in step (2), if discontinuousness transmission mode is opened, the value of signal quality Rxqual is the local measurements Rxqual_Sub in the measurement report in the then current calculating that takies the sub-district; If discontinuousness transmission mode is not opened, the value of signal quality Rxqual is the global measuring value Rxqual_Full in the measurement report in the then current calculating that takies the sub-district.
Further, the method of aforesaid assessment mobile communication speech quality, the method of average signal quality avgRxqual of determining every measurement report in step (3) is as follows: the preceding n bar measurement report in the communication process, with the signal quality Rxqual of every measurement report oneself as its average signal quality avgRxqual; Each bar measurement report is afterwards got the average signal quality avgRxqual of the mean value of common n+1 signal quality Rxqual its oneself and preceding n bar measurement report as each bar measurement report; Wherein, n is a positive integer.
Further, the method for aforesaid assessment mobile communication speech quality, in step (4), the span of the A in the formula, B, k, m is as follows: 0＜A＜35,0＜B＜5,0＜k＜1 ,-1＜m＜1; During full rate, the preferred value of the A in the formula, B, k, m is followed successively by 32,1.25,0.5,0; When half rate, the preferred value of the A in the formula, B, k, m is followed successively by 18,0.7,0.5,0.
Further, the method for aforesaid assessment mobile communication speech quality, in step (5), the value of M is the real number of 0＜M＜100, preferred value is 60.
Further, the method for aforesaid assessment mobile communication speech quality, in step (6), the value of N is the real number of 0＜M＜100, and N＜M, preferred value is 25.
Beneficial effect of the present invention is as follows: the relevant signaling data information the when method of assessment mobile communication speech quality provided by the present invention can be conversed according to mobile communication subscriber in real time, is effectively assessed mobile communication subscriber conversation speech quality, as long as gathering relevant signaling just can assess each conversation of all users, be not subjected to the influence of region and other equipment, make operator in time understand the mobile communications network situation, rationally the arrangement personnel carry out the network optimization.
Description of drawings
Fig. 1 is a method flow diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in detail.
When mobile communication subscriber is conversed by mobile communications network, can between network, transmit various signalings.Can carry relevant data, information etc. in the signaling.The present invention utilizes some related data, information to assess the quality of mobile communication subscriber conversation speech quality just.
As shown in Figure 1, a kind of method of assessing the mobile communication speech quality provided by the present invention comprises the steps:
Step S1 obtains some the relevant signaling datas in the communication process one time, and mainly comprise: whether measurement report (MR), switching, sub-district type of coding, sub-district discontinuousness transmission mode (DTX) are opened.Relevant signaling can obtain from A mouth, Abis mouth and other communications network interfaces that can obtain related data.
Step S2, conversation once when setting up or when switching judge whether the current sub-district that takies opens discontinuousness transmission mode (DTX); According to the unlatching situation of discontinuousness transmission mode (DTX), determine the value of signal quality Rxqual in the current calculating that takies the sub-district.
Concrete grammar is: if DTX opens, the value of signal quality Rxqual is the Rxqual_Sub value in the measurement report in the then current calculating that takies the sub-district; If DTX does not open, the value of signal quality Rxqual is the Rxqual_Full value in the measurement report in the then current calculating that takies the sub-district.
Rxqual represents signal quality, be the data that from measurement report, to extract, Rxqual_Sub and Rxqual_Full are the indexs of the expression signal quality that calculates based on different measuring primary system meter in the measurement report, Rxqual_Full is the global measuring value, Rxqual_Sub is a local measurements, and these two desired values are well-known in the industry.
Step S3 obtains the average signal quality of every measurement report (MR) in the communication process, and note is made avgRxqual.
This step is divided into two kinds of situations, is respectively:
S3-1, the preceding n bar MR in the communication process, with the signal quality Rxqual of every MR oneself as its average signal quality avgRxqual;
S3-2, each bar MR afterwards get the average signal quality avgRxqual of the mean value of common n+1 signal quality Rxqual its oneself and preceding n bar MR as each bar MR; Wherein, n is the positive integer more than or equal to 1, gets 3 or 5 usually.
Step S4 according to the type of coding that takies the sub-district, utilizes formula A-B * e to the avgRxqual of each bar measurement report (MR)
K * avgRxqual+mCalculate, round downwards then and draw a desired value of describing each bar MR speech quality, note is made TalkQ.In the following formula, A, B, k, m are constant; The span of A in the formula, B, k, m is as follows: 0＜A＜35,0＜B＜5,0＜k＜1 ,-1＜m＜1; During full rate, the preferred value of the A in the formula, B, k, m is followed successively by 32,1.25,0.5,0 or close real number; When half rate, the preferred value of the A in the formula, B, k, m is followed successively by 18,0.7,0.5,0 or close real number.
Step S5, article one MR after switching, desired value with the speech quality that switches preceding the last item MR is calculated by formula TalkQ-|TalkQ|*M%, then the desired value of result of calculation and current MR is compared, and gets the desired value of smaller value as current MR.In the following formula, M is a constant; The value of M is the real number of 0＜M＜100, and preferred value is 60.
Step S6, after switching second and third MR, desired value with the speech quality that switches preceding the last item MR is calculated by formula TalkQ-|TalkQ|*N%, then the desired value of result of calculation and current MR is compared, and gets the desired value of smaller value as current MR; In the following formula, N is a constant; The value of N is the real number of 0＜M＜100, and N＜M, and preferred value is 25.
Step S7 determines speech quality according to the desired value TalkQ of every measurement report, and the big more representative voice quality of desired value is good more.In theory the TalkQ maximum be A in the formula of step S4 value (if A get 32 maximum is 32), can be negative value.
In addition, between TalkQ and the MOS value approximate corresponding relation is arranged, can weigh speech quality by the MOS that is converted into that TalkQ is approximate.As shown in table 1:
Table 1
| TalkQ | 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
| MOS | 4.27 | 4.25 | 4.24 | 4.22 | 4.2 | 4.17 | 4.15 | 4.11 | 4.07 |
| TalkQ | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 |
| MOS | 4.02 | 3.97 | 3.91 | 3.84 | 3.76 | 3.67 | 3.57 | 3.46 | 3.34 |
| TalkQ | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 |
| MOS | 3.21 | 3.07 | 2.93 | 2.78 | 2.63 | 2.48 | 2.34 | 2.2 | 2.06 |
| TalkQ | 5 | 4 | 3 | 2 | 1 | 0 | -1 | -2 | -3 |
| MOS | 1.94 | 1.82 | 1.72 | 1.62 | 1.54 | 1.46 | 1.39 | 1.34 | 1.28 |
| TalkQ | -4 | -5 | -6 | -7 | -8 | -9 | -10 | -11 | -12 |
| MOS | 1.24 | 1.2 | 1.17 | 1.15 | 1.12 | 1.1 | 1.09 | 1.07 | 1.06 |
| TalkQ | -13 | -14 | -15 | -16 | -17 | -18 | -19 | -20 | |
| MOS | 1.05 | 1.04 | 1.04 | 1.03 | 1.03 | 1.02 | 1.02 | 1.01 |
Relevant signaling data information when the present invention can converse according to mobile communication subscriber in real time, is effectively assessed mobile communication subscriber conversation speech quality, as long as gathering relevant signaling just can assess each conversation of all users, be not subjected to the influence of region and other equipment, make operator in time understand the mobile communications network situation, rationally the arrangement personnel carry out the network optimization.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technology thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1. a method of assessing the mobile communication speech quality comprises the steps:
(1) obtain some the relevant signaling datas in the communication process one time, mainly comprise: whether measurement report, switching, sub-district type of coding, sub-district discontinuousness transmission mode are opened;
(2) conversation once when setting up or when switching judge whether the current sub-district that takies opens discontinuousness transmission mode; According to the unlatching situation of discontinuousness transmission mode, determine the value of signal quality Rxqual in the current calculating that takies the sub-district;
(3) obtain the average signal quality of every measurement report in the communication process, note is made avgRxqual;
(4), the avgRxqual of each bar measurement report is utilized formula A-B * e according to taking the type of coding of sub-district
K * avgRxqual+mCalculate, round downwards then and draw a desired value of describing each bar measurement report speech quality, note is made TalkQ; In the following formula, A, B, k, m are constant;
(5) article one measurement report after switching, desired value with the speech quality that switches preceding the last item measurement report is calculated by formula TalkQ-|TalkQ|*M%, then the desired value of result of calculation and current measurement report is compared, get the desired value of smaller value as current measurement report; In the following formula, M is a constant;
(6) measurement report of second and third after switching, desired value with the speech quality that switches preceding the last item measurement report is calculated by formula TalkQ-|TalkQ|*N%, then the desired value of result of calculation and current measurement report is compared, get the desired value of smaller value as current measurement report; In the following formula, N is a constant;
(7) the desired value TalkQ according to every measurement report determines speech quality, and the big more representative voice quality of desired value is good more.
2. the method for assessment mobile communication speech quality as claimed in claim 1, it is characterized in that: in step (2), if discontinuousness transmission mode is opened, the value of signal quality Rxqual is the local measurements Rxqual_Sub in the measurement report in the then current calculating that takies the sub-district; If discontinuousness transmission mode is not opened, the value of signal quality Rxqual is the global measuring value Rxqual_Full in the measurement report in the then current calculating that takies the sub-district.
3. the method for assessment mobile communication speech quality as claimed in claim 1, it is characterized in that: the method for average signal quality avgRxqual of determining every measurement report in step (3) is as follows: the preceding n bar measurement report in the communication process, with the signal quality Rxqual of every measurement report oneself as its average signal quality avgRxqual; Each bar measurement report is afterwards got the average signal quality avgRxqual of the mean value of common n+1 signal quality Rxqual its oneself and preceding n bar measurement report as each bar measurement report; Wherein, n is a positive integer.
4. the method for assessment mobile communication speech quality as claimed in claim 1 is characterized in that: in step (4), the span of the A in the formula, B, k, m is as follows; 0＜A＜35,0＜B＜5,0＜k＜1 ,-1＜m＜1; During full rate, the preferred value of the A in the formula, B, k, m is followed successively by 32,1.25,0.5,0; When half rate, the preferred value of the A in the formula, B, k, m is followed successively by 18,0.7,0.5,0.
5. the method for assessment mobile communication speech quality as claimed in claim 1 is characterized in that: in step (5), the value of M is the real number of 0＜M＜100, and preferred value is 60.
6. as the method for claim 1 or 5 described assessment mobile communication speech qualities, it is characterized in that: in step (6), the value of N is the real number of 0＜M＜100, and N＜M, and preferred value is 25.
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| CN102685789A (en) * | 2012-05-22 | 2012-09-19 | 北京东方文骏软件科技有限责任公司 | Method for evaluating QoE (Quality Of Experience) of voice service user perception experience by simulating user behaviors |
| CN105578510A (en) * | 2016-03-08 | 2016-05-11 | 中国联合网络通信集团有限公司 | Call quality test method, device |
| CN110536314A (en) * | 2018-05-23 | 2019-12-03 | 中国移动通信集团重庆有限公司 | Determination method, apparatus, equipment and the medium of voice quality |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102685789A (en) * | 2012-05-22 | 2012-09-19 | 北京东方文骏软件科技有限责任公司 | Method for evaluating QoE (Quality Of Experience) of voice service user perception experience by simulating user behaviors |
| CN102685789B (en) * | 2012-05-22 | 2014-07-16 | 北京东方文骏软件科技有限责任公司 | Method for evaluating QoE (Quality Of Experience) of voice service user perception experience by simulating user behaviors |
| CN105578510A (en) * | 2016-03-08 | 2016-05-11 | 中国联合网络通信集团有限公司 | Call quality test method, device |
| CN105578510B (en) * | 2016-03-08 | 2019-01-15 | 中国联合网络通信集团有限公司 | The test method of speech quality, device |
| CN110536314A (en) * | 2018-05-23 | 2019-12-03 | 中国移动通信集团重庆有限公司 | Determination method, apparatus, equipment and the medium of voice quality |
| CN110536314B (en) * | 2018-05-23 | 2022-12-27 | 中国移动通信集团重庆有限公司 | Method, device, equipment and medium for determining voice quality |
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