CN105517169B - It is a kind of for evading the dispatching method of interference - Google Patents
It is a kind of for evading the dispatching method of interference Download PDFInfo
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Abstract
This application discloses a kind of for interfering the dispatching method evaded, comprising: in each time-domain symbol, on subcarrier each in system interference and noise power measure；Corresponding each subcarrier, in setting time on the subcarrier interference and noise-power measurement result be smoothed, obtain sharpening result；Corresponding setting time, the average smooth result of all subcarriers is calculated according to the sharpening result of each subcarrier；In all subcarriers, there is the strong jamming subcarrier of frequency domain interference feature according to the relationship selection between the sharpening result of each subcarrier and average smooth result；Limitation scheduling is carried out to the strong jamming subcarrier with frequency domain interference feature.Using the application, service reliability can be improved.
Description
Technical field
It is this application involves the communication technology, in particular to a kind of for evading the dispatching method of interference.
Background technique
LTE system is eated dishes without rice or wine using orthogonal frequency division multiple access technology, can distribute money over the frequency domain for user
Source.In public network deployment, the frequency range that operator uses generally as obtained by purchase or being issued as spectrum regulatory body, therefore by
The interference potential very little of other systems.It, also substantially can be by being surveyed before networking and even if there is interference, and use static programming
Method carries out interference and evades.
When disposing LTE private network broadband cluster communication system, frequency range used may be shared by multiple systems, and interference has
Certain dynamic characteristic, therefore interference can not be carried out using simple static planning method before networking and evaded.Therefore, special
In wet end administration, usually equally guarantee that there is no the dry of other communication systems always in the system bandwidth of planning without image of Buddha public network
It disturbs.And after networking, then it is likely to occur the interference of other systems, further, there may be certain frequency domain characters for interference, and
This frequency domain character may also vary over, in this case, it is difficult to ensure that the reliability of network performance.
In current private network system, seldom consider that there are the scenes of other system interferences, therefore, need a kind of use at present
In the scheme that dynamic disturbance is evaded, to guarantee the private network service reliability under dynamic change interference scene.
Summary of the invention
The application provide it is a kind of for interfering the dispatching method evaded, may by other systems interfere communication system
In, improve service reliability.
To achieve the above object, the application adopts the following technical scheme that:
It is a kind of for interfering the dispatching method evaded, comprising:
In each time-domain symbol, on subcarrier each in system interference and noise power measure；
Corresponding each subcarrier, in setting time on the subcarrier interference and noise-power measurement result carry out it is smooth
Processing, obtains sharpening result Pj；
The corresponding setting time, the average smooth result of all subcarriers is calculated according to the sharpening result of each subcarrierIn all subcarriers, selected according to the relationship between the sharpening result of each subcarrier and the average smooth result
Select the strong jamming subcarrier with frequency domain interference feature；Wherein, j is sub-carrier indices, and M is the subcarrier in system bandwidth
Number；
Limitation scheduling is carried out to the strong jamming subcarrier with frequency domain interference feature.
Preferably, selection subcarrier sharpening result be greater than setting the first thresholding and the sharpening result of subcarrier with it is described
The difference of average smooth result is greater than the subcarrier of the second thresholding of setting, carries as strong jamming with frequency domain interference feature
Wave.
Preferably, the interference and noise-power measurement result on subcarrier in setting time is smoothed
When, according to time domain is smooth and the requirement of real-time of Interference Detection, determine the setting time.
Preferably, the limitation scheduling are as follows: disabling subcarrier or the priority for reducing subcarrier.
It is a kind of for interfering the dispatching device evaded, comprising: real-time measurement unit, smoothing processing unit, sub-carrier selection
Unit and scheduling unit；
The real-time measurement unit, for the interference on subcarrier each in system and making an uproar in each time-domain symbol
Acoustical power measures；
The smoothing processing unit to the interference in setting time on the subcarrier and is made an uproar for corresponding to each subcarrier
Sound power measurement result is smoothed, and obtains sharpening result Pj；
The sub-carrier selection unit is calculated for corresponding to the setting time according to the sharpening result of each subcarrier
The average smooth result of all subcarriersIn all subcarriers, according to the sharpening result of each subcarrier and institute
State the strong jamming subcarrier that the relationship selection between average smooth result has frequency domain interference feature；Wherein, j is sub-carrier indices, M
For the subcarrier number in system bandwidth；
The scheduling unit, for carrying out limitation scheduling to the strong jamming subcarrier with frequency domain interference feature.
As seen from the above technical solution, in the application, in each time-domain symbol, to dry on subcarrier each in system
It disturbs and is measured with noise power；Corresponding each subcarrier, to the interference and noise power survey in setting time on the subcarrier
Amount result is smoothed, and obtains sharpening result；Corresponding setting time calculates all according to the sharpening result of each subcarrier
The average smooth result of subcarrier；In all subcarriers, according between the sharpening result of each subcarrier and average smooth result
Relationship selection have frequency domain interference feature strong jamming subcarrier；Strong jamming subcarrier with frequency domain interference feature is carried out
Limitation scheduling.In this way, can be monitored in real time to interference and noise, and strong jamming with frequency domain interference feature is selected to carry
Wave is limited scheduling, to avoid or reduce the data transmission on strong jamming subcarrier as far as possible, and then improves system
Performance and service reliability.
Detailed description of the invention
Fig. 1 is the basic procedure schematic diagram of dispatching method in the application；
Fig. 2 is the basic structure schematic diagram of dispatching device in the application.
Specific embodiment
In order to which the purpose, technological means and advantage of the application is more clearly understood, the application is done below in conjunction with attached drawing
It is further described.
By the interference and noise power progress real-time monitoring to each subcarrier in the application, to find out with frequency domain
The strong jamming subcarrier of feature, and the data dispatch on corresponding subcarrier is limited when carrying out traffic scheduling, to improve system
Performance and service reliability.
Fig. 1 is the basic procedure schematic diagram of dispatching method in the application.As shown in Figure 1, this method comprises:
Step 101, in each time-domain symbol, on subcarrier each in system interference and noise power survey
Amount.
It is done on each subcarrier in each time-domain symbol (such as OFDMA symbol) to carry out real-time measurement
Disturb the power measurement with noise.It specifically, can be by interfering with the power of noise and to indicate.Remember on time-domain symbol i, sub- load
The sum of jamming power and noise power for measuring on wave j are Pi,j.Wherein, i and j is respectively the index of time-domain symbol and subcarrier
Value.
Step 102, corresponding each subcarrier, to the interference and noise-power measurement result in setting time on the subcarrier
It is smoothed, obtains sharpening result.
For balance real-time and the smooth requirement of time domain, can in setting time on certain subcarrier interference and noise function
Rate measurement result (such as interference and noise power and) is smoothed.Wherein, when setting time can be the period of setting
Between, smoothing processing can use various feasible patterns, such as the mode averaged.To average as smoothing processing,
Specifically, strong jamming and interference frequency domain character judgement can be carried out, is remembered in current period using N number of time-domain symbol as measurement period
Interior, the sum of interference and noise power on subcarrier j areWherein, M is the son in full bandwidth
Total number subcarriers.
Step 103, corresponding setting time, the average smooth of all subcarriers is calculated according to the sharpening result of each subcarrier
As a result.
When setting time is measurement period, the average smooth knot of all subcarriers can be calculated in each measurement period
Fruit is
Step 104, in all subcarriers, according to the relationship between the sharpening result of each subcarrier and average smooth result
Select the strong jamming subcarrier with frequency domain interference feature.
In the current statistical cycle, according to the sharpening result P of each subcarrier in the periodjIt is carried out with average sharpening result
Strong jamming sub-carrier selection with frequency domain interference feature.Specifically, specific selection mode can be set according to actual needs.
Here it provides a kind of simple selection mode: can choose the subcarrier composition for being greater than the first thresholding of setting by strongly disturbing sub- load
Wave collection S={ meets PjGreater than the subcarrier j of default interference threshold }, and the difference of selection and average smooth result is greater than setting second
There is the subcarrier composition of thresholding the t easet ofasubcarriers K=of frequency domain interference feature { to meet Pj- P is greater than the subcarrier of pre-determined threshold
j}；Subcarrier in the intersection of reselection combination S and set K is as the strong jamming subcarrier with frequency domain interference feature.
Step 105, when carrying out traffic scheduling, limitation scheduling is carried out to the subcarrier selected.
It specifically, can be in the traffic scheduling of next measurement period, to current when setting time is measurement period
The subcarrier that measurement period is selected carries out limitation scheduling.Specifically, the concrete mode for limiting scheduling can be to forbid corresponding
The dispatching priority of scheduling or the corresponding subcarrier of reduction on subcarrier.
So far, the dispatching method process in the application terminates.
Present invention also provides a kind of for interfering the dispatching device evaded, and can be used for implementing above-mentioned dispatching method.Fig. 2
For the basic structure schematic diagram of the dispatching device.As shown in Fig. 2, the device include: real-time measurement unit, smoothing processing unit,
Sub-carrier selection unit and scheduling unit.
Wherein, real-time measurement unit, for the interference on subcarrier each in system and making an uproar in each time-domain symbol
Acoustical power measures.Smoothing processing unit, for corresponding to each subcarrier, in setting time on the subcarrier interference and
Noise-power measurement result is smoothed, and obtains sharpening result Pj。
Sub-carrier selection unit calculates all sub- loads according to the sharpening result of each subcarrier for corresponding to setting time
The average smooth result of waveIn all subcarriers, averagely put down according to the sharpening result of each subcarrier with described
Relationship selection between Slipped Clove Hitch fruit has the strong jamming subcarrier of frequency domain interference feature；Wherein, j is sub-carrier indices, and M is system band
Subcarrier number in width.Scheduling unit, for carrying out limitation scheduling to the strong jamming subcarrier with frequency domain interference feature.
Above-mentioned is the specific implementation of the application.By above-mentioned dispatching method and device, in each time-domain symbol, to each
Interference noise power on a subcarrier measures；The interference information of measurement is handled, it will treated interference noise
Information is compared with pre-determined threshold threshold value, identifies the frequency domain character of strong jamming and interference, and limit to corresponding using scheduler
Scheduling on subcarrier.So as to by other system interferences and in network that the interference has certain frequency domain character,
Can the disturbed condition that is subject to of real-time tracking network, carry out interference and evade, improve the reliability of disturbed network.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (4)
1. a kind of for interfering the dispatching method evaded characterized by comprising
In each time-domain symbol, on subcarrier each in system interference and noise power measure；
Corresponding each subcarrier, in setting time on the subcarrier interference and noise-power measurement result smoothly located
Reason, obtains sharpening result Pj；
The corresponding setting time, the average smooth result of all subcarriers is calculated according to the sharpening result of each subcarrierIn all subcarriers, select subcarrier sharpening result be greater than setting the first thresholding and subcarrier it is smooth
As a result and the difference of the average smooth result is greater than the subcarrier for setting the second thresholding, as with the capable and experienced of frequency domain interference feature
Disturb subcarrier；Wherein, j is sub-carrier indices, and M is the subcarrier number in system bandwidth；
Limitation scheduling is carried out to the strong jamming subcarrier with frequency domain interference feature.
2. the method according to claim 1, wherein the interference and noise on subcarrier in setting time
When power measurement is smoothed, according to time domain is smooth and the requirement of real-time of Interference Detection, when determining the setting
Between.
3. the method according to claim 1, wherein the limitation is dispatched are as follows: disabling subcarrier reduces son load
The priority of wave.
4. a kind of for interfering the dispatching device evaded characterized by comprising real-time measurement unit, smoothing processing unit, son
Carrier wave selecting unit and scheduling unit；
The real-time measurement unit, in each time-domain symbol, on subcarrier each in system interference and noise function
Rate measures；
The smoothing processing unit, for corresponding to each subcarrier, in setting time on the subcarrier interference and noise function
Rate measurement result is smoothed, and obtains sharpening result Pj；
The sub-carrier selection unit calculates all for corresponding to the setting time according to the sharpening result of each subcarrier
The average smooth result of subcarrierIn all subcarriers, the sharpening result of subcarrier is selected to be greater than setting first
The difference of thresholding and the sharpening result of subcarrier and the average smooth result is greater than the subcarrier of the second thresholding of setting, as tool
There is the strong jamming subcarrier of frequency domain interference feature；Wherein, j is sub-carrier indices, and M is the subcarrier number in system bandwidth；
The scheduling unit, for carrying out limitation scheduling to the strong jamming subcarrier with frequency domain interference feature.
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| CN111083644B (en) * | 2018-10-19 | 2021-12-10 | 成都鼎桥通信技术有限公司 | Carrier jamming detection and closing method and device in multi-channel narrow-band digital cluster system |
| CN111432473B (en) * | 2019-01-09 | 2022-11-18 | 成都鼎桥通信技术有限公司 | Carrier scheduling method and device for digital cluster |
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