A kind of electric power wireless private network Frequency spectrum quality appraisal procedure and system
阅读说明：本技术 一种电力无线专网频谱质量评估方法及系统 (A kind of electric power wireless private network Frequency spectrum quality appraisal procedure and system ) 是由 缪巍巍 于鹏飞 张小建 吴鹏 蒋承伶 张明轩 刘锐 余勇 冯谷 曹婉恬 于 2018-05-23 设计创作，主要内容包括：本发明涉及一种电力无线专网频谱质量评估方法及系统,根据各测量点对应的资源块组中每个载波的信号与干扰加噪声比SINR值确定各测量点对应的资源块组的等效SINR值,并测量各测量点对应的资源块组的等效SINR值中最优等效SINR值相当的覆盖范围；根据各测量点对应的资源块组单次时间间隔内不包含噪声的概率确定各测量点对应的资源块组n个连续时间间隔不包含噪声的概率；根据所述覆盖范围和各测量点对应的资源块组n个连续时间间隔不包含噪声的概率确定最优等效SINR值对应的信道质量指示CQI数值的修正量；利用所述修正量评估电力无线专网频谱质量。本发明融合频谱质量的持续性因素和频谱质量覆盖范围因素的评价指标,使得在多种维度下的综合后评价指标更加准确。(The present invention relates to a kind of electric power wireless private network Frequency spectrum quality appraisal procedure and systems, the equivalent SINR value of the corresponding resource block group of each measurement point is determined according to the Signal to Interference plus Noise Ratio SINR value of each carrier wave in the corresponding resource block group of each measurement point, and measures the optimal equivalent comparable coverage area of SINR value in the equivalent SINR value of the corresponding resource block group of each measurement point；The probability of noise is not included according to the corresponding n continuous time interval of resource block group of each measurement point of determine the probability for not including noise in the corresponding resource block group single time interval of each measurement point；The correction amount of the corresponding channel quality indicator (CQI) numerical value of the optimal equivalent SINR value of the determine the probability for not including noise according to the coverage area and the corresponding n continuous time interval of resource block group of each measurement point；Electric power wireless private network Frequency spectrum quality is assessed using the correction amount.The present invention merges the lasting sexual factor of Frequency spectrum quality and the evaluation index of Frequency spectrum quality coverage area factor, so that the Comprehensive Post Evaluation index under a variety of dimensions is more accurate.)
1. a kind of electric power wireless private network Frequency spectrum quality appraisal procedure, it is characterised in that:
Each measurement is determined according to the Signal to Interference plus Noise Ratio SINR value of each carrier wave in the corresponding resource block group of each measurement point The equivalent SINR value of the corresponding resource block group of point, and measure most excellent in the equivalent SINR value of the corresponding resource block group of each measurement point Imitate the comparable coverage area of SINR value；
It is corresponding according to each measurement point of determine the probability for not including noise in the corresponding resource block group single time interval of each measurement point N continuous time interval of resource block group do not include noise probability；
The probability for not including noise according to the coverage area and the corresponding n continuous time interval of resource block group of each measurement point is true Determine the correction amount of the corresponding channel quality indicator (CQI) numerical value of optimal equivalent SINR value；
Electric power wireless private network Frequency spectrum quality is assessed using the correction amount.
2. electric power wireless private network Frequency spectrum quality appraisal procedure as described in claim 1, it is characterised in that: described according to each measurement The Signal to Interference plus Noise Ratio SINR value of each carrier wave determines the corresponding resource block of each measurement point in the corresponding resource block group of point The equivalent SINR value of group, comprising:
The equivalent SINR value of the corresponding resource block group of each measurement point is determined as the following formula:
SINR=S/ (I+N)
In formula: SINR is the equivalent SINR value of the corresponding resource block group of each measurement point；S is the useful signal function of each carrier signal Rate；I is the power of each carrier signal or channel interference signal, and N is low-frequency noise.
3. electric power wireless private network Frequency spectrum quality appraisal procedure as described in claim 1, it is characterised in that: each measurement of measurement The optimal equivalent comparable coverage area of SINR value in the equivalent SINR value of the corresponding resource block group of point, comprising:
If the optimal equivalent SINR value corresponds to the corresponding Signal to Interference plus Noise Ratio SINR value of electric power terminal around measurement point Not less than Δ SINRmax, then the electric power terminal present position belongs to the coverage area, wherein SINRmaxIt is corresponding for each measurement point Resource block group equivalent SINR value in optimal equivalent SINR value, Δ is attenuation coefficient.
4. electric power wireless private network Frequency spectrum quality appraisal procedure as described in claim 1, it is characterised in that: described according to each measurement Corresponding n company of resource block group of each measurement point of determine the probability of noise is not included in the corresponding resource block group single time interval of point Continuous time interval does not include the probability of noise, comprising:
Determine that the corresponding n continuous time interval of resource block group of each measurement point does not include the probability P of noise as the following formulan:
Pn=(1-p1)n
In above formula, PnIndicate that n continuous time interval does not include the probability of noise, p1Indicate that current time interval does not include noise Probability.
5. electric power wireless private network Frequency spectrum quality appraisal procedure as described in claim 1, it is characterised in that: each measurement point is corresponding N continuous time interval of resource block group does not include the corresponding channel quality instruction of the optimal equivalent SINR value of determine the probability of noise The correction amount of CQI numerical value, comprising:
The CQI numerical algorithm defined using 3GPP obtains the corresponding channel quality indicator (CQI) numerical value of the optimal equivalent SINR value；
The coverage area and live electric power application terminal covering are required into comparison, if being unsatisfactory for requiring, downward revision CQI number Value is until the coverage area meets live electric power application terminal covering and requires；
What probability and live electric power application applicable norm by described n continuous time interval of resource block group not comprising noise defined The comparison of transmission success rate, if being unsatisfactory for requiring, downward revision CQI numerical value simultaneously reduces continuous time interval number, until the money The probability that n continuous time interval of source block group does not include noise meets the transmission success rate that live electric power application applicable norm defines It is required that.
6. electric power wireless private network Frequency spectrum quality appraisal procedure as described in claim 1, it is characterised in that: the correction amount and institute Electric power wireless private network Frequency spectrum quality is stated to be positively correlated.
7. a kind of electric power wireless private network Frequency spectrum quality assessment system, it is characterised in that:
First determining module, for the Signal to Interference plus Noise Ratio according to each carrier wave in the corresponding resource block group of each measurement point SINR value determines the equivalent SINR value of the corresponding resource block group of each measurement point, and measure the corresponding resource block group of each measurement point etc. Imitate the optimal equivalent comparable coverage area of SINR value in SINR value；
Second determining module, for according to the probability for not including noise in the corresponding resource block group single time interval of each measurement point Determine that the corresponding n continuous time interval of resource block group of each measurement point does not include the probability of noise；
Third determining module, for according to the coverage area and the corresponding n continuous time interval of resource block group of each measurement point The correction amount of the corresponding channel quality indicator (CQI) numerical value of the optimal equivalent SINR value of determine the probability not comprising noise；
Evaluation module, for assessing electric power wireless private network Frequency spectrum quality using the correction amount.
8. electric power wireless private network Frequency spectrum quality assessment system as claimed in claim 7, it is characterised in that: described first determines mould Block is also used to: the equivalent SINR value of the corresponding resource block group of each measurement point is determined as the following formula:
SINR=S/ (I+N)
In formula: SINR is the equivalent SINR value of the corresponding resource block group of each measurement point；S is the useful signal function of each carrier signal Rate；I is the power of each carrier signal or channel interference signal, and N is low-frequency noise.
9. electric power wireless private network Frequency spectrum quality assessment system as claimed in claim 7, it is characterised in that: described second determines mould Block is also used to: determining that n continuous time interval of resource block group does not include the probability P of noise as the following formulan:
Pn=(1-p1)n
In above formula, PnIndicate that n continuous time interval does not include the probability of noise, p1Indicate that current time interval does not include noise Probability.
10. electric power wireless private network Frequency spectrum quality assessment system as claimed in claim 7, it is characterised in that: the third determines Module, comprising:
Acquiring unit, CQI numerical algorithm for being defined using 3GPP obtain the corresponding channel matter of the optimal equivalent SINR value Amount instruction CQI numerical value；
First comparing unit, for the coverage area and live electric power application terminal covering to be required comparison, if being unsatisfactory for wanting It asks, then downward revision CQI numerical value is until the coverage area meets live electric power application terminal covering and requires；
Second comparing unit, for described n continuous time interval of resource block group not included to the probability and live electric power of noise The transmission success rate comparison defined using applicable norm, if being unsatisfactory for requiring, downward revision CQI numerical value simultaneously reduces continuous time Space-number, until the probability that described n continuous time interval of resource block group does not include noise meets live electric power application and is applicable in rule The transmission success rate requirement that model defines.
11. electric power wireless private network Frequency spectrum quality assessment system as claimed in claim 7, it is characterised in that: the evaluation module, It is also used to assess the correction amount to be positively correlated with the electric power wireless private network Frequency spectrum quality.
Technical field
The present invention relates to electric power wireless communication fields, and in particular to a kind of electric power wireless private network Frequency spectrum quality appraisal procedure and System.
Background technique
The construction of electric power wireless private network uses TD-LTE standard, and standard frequency domain scheduling of resource that this is wireless is system resource scheduling Important method.In frequency domain resource scheduling, descending scheduling is to be determined by eNodeB, and eNodeB is as transmitting terminal, and unclear How is Chu's channel condition, and channel quality measurement is completed by UE.UE feedback channel quality, channel quality is quantized into 0 by agreement~ 15 sequence (4bit number to carry), and it is defined as CQI, eNodeB is according to CQI (CQI, the Channel Quality reported Indicator, channel quality instruction) determine coding mode.The Criterion of Selecting of CQI is the bit error rate for the transmission block that UE is received No more than 10%.
According to 3GPP agreement, the modulation system and transmission block of a pair of corresponding code rate of CQI closest to selection can be looked for Size, and CQI can be obtained by BLER-SINR table.By indicating the CQI value of current radio channel quality, TD-LTE application Link adaptation techniques based on physical layer, by adjusting the modulation system and code rate of transmission of radio links, it is ensured that link Transmission quality.When channel condition is poor, lesser modulation system and code rate are selected；When channel condition is preferable, choosing Biggish modulation system is selected, to maximise transmission rate.In the modulation system of transmission of radio links and the tune of code rate During whole, the data rate that system always wants to transmission is consistent with the trend of channel variation, thus maximumlly using wireless The transmittability of channel.
The accuracy and real-time of the quality of wireless channel information of CQI instruction will affect link of the TD-LTE based on physical layer Adaptive performance, and then influence the transmission quality of Radio Link.The accuracy and letter of the quality of wireless channel information of CQI instruction The quantization error of channel estimation algorithm and channel quality has direct relation, and the real-time of quality of wireless channel is by channel quality The influence for measuring moment and transmission time time delay, this is because when the brings such as processing delay and scheduling delay of system itself Prolong.Under normal circumstances, wireless channel variation is slower, and limited delay not will cause performance and significantly lose, but if nothing Line channel variation is than very fast, then just having serious influence to TD-LTE system performance.
Electric power wireless private network access terminal be generally quasi-static deployment, with the other Industry systems of frequency range and complexity answer Influencing bring burst noise with environment is an important factor for influencing quality of wireless channel.Although burst noise is to wireless channel matter The influence of amount may be of short duration, but be likely to result in the re-transmission of business or the increase of propagation delay time.
Summary of the invention
For solve it is above-mentioned in the prior art on TD-LTE system performance just have it is serious influence and cause business re-transmission or The problem of increase of person's propagation delay time the object of the present invention is to provide a kind of electric power wireless private network Frequency spectrum quality appraisal procedure and is System, it is wireless by fusing wireless terminal signaling and interference plus noise ratio (SINR), the duration of SINR mass and the SINR mass Three kinds of factors of physical channel coverage area, assess current wireless physical channel quality.
The purpose of the present invention is adopt the following technical solutions realization:
The present invention provides a kind of electric power wireless private network Frequency spectrum quality appraisal procedure, thes improvement is that:
It is determined according to the Signal to Interference plus Noise Ratio SINR value of each carrier wave in the corresponding resource block group of each measurement point each The equivalent SINR value of the corresponding resource block group of measurement point, and measure in the equivalent SINR value of the corresponding resource block group of each measurement point most The comparable coverage area of excellent effect SINR value；
According to each measurement point of determine the probability for not including noise in the corresponding resource block group single time interval of each measurement point Corresponding n continuous time interval of resource block group does not include the probability of noise；
The general of noise is not included according to the coverage area and the corresponding n continuous time interval of resource block group of each measurement point Rate determines the correction amount of the corresponding channel quality indicator (CQI) numerical value of optimal equivalent SINR value；
Electric power wireless private network Frequency spectrum quality is assessed using the correction amount.
Further e: the signal and interference plus noise according to each carrier wave in the corresponding resource block group of each measurement point Than the equivalent SINR value that SINR value determines the corresponding resource block group of each measurement point, comprising:
The equivalent SINR value of the corresponding resource block group of each measurement point is determined as the following formula:
SINR=S/ (I+N)
In formula: SINR is the equivalent SINR value of the corresponding resource block group of each measurement point；S is the useful letter of each carrier signal Number power；I is the power of each carrier signal or channel interference signal, and N is low-frequency noise.
Further: optimal equivalent SINR value phase in the equivalent SINR value for measuring the corresponding resource block group of each measurement point When coverage area, comprising:
If the optimal equivalent SINR value corresponds to the corresponding Signal to Interference plus Noise Ratio of electric power terminal around measurement point SINR value is not less than Δ SINRmax, then the electric power terminal present position belongs to the coverage area, wherein SINRmaxFor each measurement Optimal equivalent SINR value in the equivalent SINR value of the corresponding resource block group of point, Δ is attenuation coefficient.
Further: described according to the probability for not including noise in the corresponding resource block group single time interval of each measurement point Determine that the corresponding n continuous time interval of resource block group of each measurement point does not include the probability of noise, comprising:
Determine that the corresponding n continuous time interval of resource block group of each measurement point does not include the probability P of noise as the following formulan:
Pn=(1-p1)n
In above formula, PnIndicate that n continuous time interval does not include the probability of noise, p1Indicate that current time interval does not include The probability of noise.
Further: described according to the coverage area and the corresponding n continuous time interval of resource block group of each measurement point The correction amount of the corresponding channel quality indicator (CQI) numerical value of the optimal equivalent SINR value of determine the probability not comprising noise, comprising:
The CQI numerical algorithm defined using 3GPP obtains the corresponding channel quality indicator (CQI) of the optimal equivalent SINR value Numerical value；
The coverage area and live electric power application terminal covering are required into comparison, if being unsatisfactory for requiring, downward revision CQI numerical value is until the coverage area meets live electric power application terminal covering and requires；
Described n continuous time interval of resource block group is not included into the probability of noise and live electric power application applicable norm is determined The transmission success rate comparison of justice, if being unsatisfactory for requiring, downward revision CQI numerical value simultaneously reduces continuous time interval number, until institute State n continuous time interval of resource block group not comprising the probability of noise meet transmission that live electric power application applicable norm defines at Power requirement.
Further: the correction amount is positively correlated with the electric power wireless private network Frequency spectrum quality.
The present invention also provides a kind of electric power wireless private network Frequency spectrum quality assessment systems, the improvement is that:
First determining module is made an uproar for being added according to the signal of each carrier wave in the corresponding resource block group of each measurement point with interference Acoustic ratio SINR value determines the equivalent SINR value of the corresponding resource block group of each measurement point, and measures the corresponding resource block group of each measurement point Equivalent SINR value in the optimal equivalent comparable coverage area of SINR value；
Second determining module, for according to not including noise in the corresponding resource block group single time interval of each measurement point The corresponding n continuous time interval of resource block group of each measurement point of determine the probability does not include the probability of noise；
Third determining module, for according to the coverage area and each measurement point corresponding n continuous time of resource block group Interval does not include the correction amount of the corresponding channel quality indicator (CQI) numerical value of the optimal equivalent SINR value of determine the probability of noise；
Evaluation module, for assessing electric power wireless private network Frequency spectrum quality using the correction amount.
Further: first determining module is also used to: determine as the following formula the corresponding resource block group of each measurement point etc. Imitate SINR value:
SINR=S/ (I+N)
In formula: SINR is the equivalent SINR value of the corresponding resource block group of each measurement point；S is the useful letter of each carrier signal Number power；I is the power of each carrier signal or channel interference signal, and N is low-frequency noise.
Further: second determining module is also used to: determining n continuous time interval of resource block group not as the following formula Probability P comprising noisen:
Pn=(1-p1)n
In above formula, PnIndicate that n continuous time interval does not include the probability of noise, p1Indicate that current time interval does not include The probability of noise.
Further: the third determining module, comprising:
Acquiring unit, CQI numerical algorithm for being defined using 3GPP obtain the corresponding letter of the optimal equivalent SINR value Road quality indicator (CQI) numerical value；
First comparing unit, for the coverage area and live electric power application terminal covering to be required comparison, if discontented Foot requires, then downward revision CQI numerical value is until the coverage area meets live electric power application terminal covering and requires；
Second comparing unit, for described n continuous time interval of resource block group not included to probability and the scene of noise The transmission success rate comparison that electric power application applicable norm defines, if being unsatisfactory for requiring, downward revision CQI numerical value simultaneously reduces continuous Time interval number, until the probability that described n continuous time interval of resource block group does not include noise meets live electric power using suitable With the transmission success rate requirement of specification definition.
Further: the evaluation module is also used to assess the correction amount and the electric power wireless private network Frequency spectrum quality It is positively correlated.
Compared with the immediate prior art, technical solution provided by the invention is had the beneficial effect that
It is corresponding according to each measurement point the invention proposes a kind of electric power wireless private network Frequency spectrum quality appraisal procedure and system The Signal to Interference plus Noise Ratio SINR value of each carrier wave determines the equivalent of the corresponding resource block group of each measurement point in resource block group SINR value, and measure the optimal equivalent comparable covering model of SINR value in the equivalent SINR value of the corresponding resource block group of each measurement point It encloses；It is corresponding according to each measurement point of determine the probability for not including noise in the corresponding resource block group single time interval of each measurement point N continuous time interval of resource block group does not include the probability of noise；According to the coverage area and the corresponding resource of each measurement point N continuous time interval of block group does not include the corresponding channel quality indicator (CQI) number of the optimal equivalent SINR value of determine the probability of noise The correction amount of value；Electric power wireless private network Frequency spectrum quality is assessed using the correction amount.The duration of present invention fusion Frequency spectrum quality The evaluation index of factor and Frequency spectrum quality coverage area factor, and CQI only by current signal, signal and interferes plus makes an uproar in 3GPP Acoustic ratio is calculated, therefore the Comprehensive Post Evaluation index under a variety of dimensions of this method is more accurate.It is commented proposed by the present invention The method of estimating show that quality of wireless channel indicated value is applied to link adaptation techniques of the TD-LTE based on physical layer, is better able to full Sufficient power business low delay, highly reliable transmission demand.
Detailed description of the invention
Fig. 1 is the flow chart of electric power wireless private network Frequency spectrum quality appraisal procedure provided by the invention.
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to Practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment Only represent possible variation.Unless explicitly requested, otherwise individual component and function are optional, and the sequence operated can be with Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims Object.Herein, these embodiments of the invention can individually or generally be indicated that this is only with term " invention " For convenience, and if in fact disclosing the invention more than one, the range for being not meant to automatically limit the application is to appoint What single invention or inventive concept.