CN104185205A - Broadband jamming signal bandwidth detection method and device - Google Patents
Broadband jamming signal bandwidth detection method and device Download PDFInfo
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- CN104185205A CN104185205A CN201410403452.4A CN201410403452A CN104185205A CN 104185205 A CN104185205 A CN 104185205A CN 201410403452 A CN201410403452 A CN 201410403452A CN 104185205 A CN104185205 A CN 104185205A
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Abstract
The invention provides a broadband jamming signal bandwidth detection method and device. The method and device are used for detecting the broadband jamming signal bandwidth in an LTE system, broadband jamming signals on a whole frequency band of the broadband jamming signals can be detected even in a special scene, and operability is high. The method includes the steps that when it is determined that a work frequency band of a current cell needs to be adjusted, the work frequency band of the current cell is adjusted, and broadband jamming signal power in the adjusted work frequency band of the current cell is determined; according to the adjusted work frequency band of the current cell, the broadband jamming signal power in the adjusted work frequency band of the current cell and a preset broadband jamming signal power threshold, when it is determined that the frequency band of the broadband jamming signals is covered with the adjusted work frequency band of the current cell, the broadband jamming signal bandwidth is detected.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of wideband jamming signal bandwidth detection method and device.
Background technology
At Long Term Evolution (Long Term Evolution, LTE) in network, cell operation bandwidth can be configured to 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz, prior art adopts the interferer signal detection method of base station conventionally, or utilize the interferer signal detection method of frequency spectrograph (or sweep generator), realize the detection of bandwidth, power and the frequency range of the interference signal to being subject in the course of normal operation of community.
The interferer signal detection method of base station refers to, base station is with Physical Resource Block (PRB, bandwidth, power and the frequency range of the interference signal being subject to during Physical Resource Block) for detection unit detected cells course of normal operation, this detection method only just can complete testing process by base station equipment; Utilize the interferer signal detection method of frequency spectrograph (or sweep generator) to refer to, frequency spectrograph (or sweep generator) is carried to base station terrace, the detection of bandwidth, power and the frequency range of the interference signal being subject to when carrying out community course of normal operation.
In fact, along with LTE system works frequency range is constantly expanded, the broadband signal that cell operation signal can be subject to causing from equipment such as Digital Television, microwaves is disturbed, the bandwidth of these wideband interference signals is generally that several MHz are to tens MHz, therefore, may occur that wideband interference signal frequency range and cell operation frequency range intersect, or wideband interference signal frequency range is wider than the situation of cell operation frequency range; In such cases, adopt the interferer signal detection method of base station the wideband interference signal of frequency range cross section only can be detected, the wideband interference signal in the whole frequency ranges of wideband interference signal can not be detected, also just cannot judge the source of wideband interference signal.And the interferer signal detection method that adopts frequency spectrograph (or sweep generator) need to be carried to base station terrace by frequency spectrograph (or sweep generator) and detects, need experienced engineer to participate in detecting, because the many factors such as time, personnel all will limit the operability of this kind of detection; In addition, adopt the testing process of the interferer signal detection method of frequency spectrograph (or sweep generator) to need deactivating cell, otherwise wideband interference signal may be flooded by LTE network signal.
In sum, adopt the interferer signal detection method of base station in prior art, the wideband interference signal in the whole frequency ranges of wideband interference signal under special screne, cannot be detected; And the interferer signal detection method operability of prior art intermediate frequency spectrometer (or sweep generator) is low.
Summary of the invention
The invention provides a kind of wideband jamming signal bandwidth detection method and device, in order to realize the detection of wideband jamming signal bandwidth in LTE system, even if the wideband interference signal in the whole frequency ranges of wideband interference signal under special screne, still can be detected, and workable.
A kind of wideband jamming signal bandwidth detection method that the embodiment of the present invention provides, the method comprises:
When determining while need to adjust current area working frequency range, adjust current area working frequency range, and determine the wideband interfering signal power in the cell operation frequency range after adjusting;
Wideband interfering signal power in the cell operation frequency range according to the cell operation frequency range after adjusting, after adjusting and default wideband interfering signal power thresholding, while determining the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, detect wideband jamming signal bandwidth.
From said method, can find out, when determining, exist wideband interference signal frequency range and cell operation frequency range to intersect, or wideband interference signal frequency range is wider than the situation of cell operation frequency range, be in the inventive method, to determine in the time of need to adjusting current area working frequency range, by adjusting current area working frequency range, and the wideband interfering signal power in the cell operation frequency range after definite adjustment, when according to the cell operation frequency range after adjusting, wideband interfering signal power in cell operation frequency range after adjustment, and default wideband interfering signal power thresholding, while determining the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, during the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, the wideband interference signal in the whole frequency ranges of wideband interference signal can be detected, and then obtain wideband jamming signal bandwidth.
Preferably, determine the wideband interfering signal power in the cell operation frequency range after adjusting, comprising:
With Physical Resource Block PRBWei unit, the cell operation frequency range after adjusting is divided into a plurality of detection frequency ranges;
Obtain each and detect the wideband interfering signal power in frequency range.
Like this, so that according to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, determine the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting.
Preferably, when determining while need to adjust current area working frequency range, adjust current area working frequency range, comprising:
When the bandwidth of cell operation frequency range is less than 20MHz, the bandwidth of cell operation frequency range is adjusted into 20MHz.
Like this, by adjusting current area working frequency range, make the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, and then detect wideband jamming signal bandwidth.
Preferably, when determining while need to adjust current area working frequency range, adjust current area working frequency range, comprising:
When be positioned at cell operation frequency range original position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is reduced to default step-length.
Like this, by current area working frequency range, make the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, and then detect wideband jamming signal bandwidth.
Preferably, when determining while need to adjust current area working frequency range, adjust current area working frequency range, comprising:
When be positioned at cell operation frequency range terminal position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is increased to default step-length.
Like this, by current area working frequency range, make the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, and then detect wideband jamming signal bandwidth.
Preferably, according to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, determine the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, comprising:
When meeting the following conditions, determine the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting:
The bandwidth of current area working frequency range is more than or equal to 20MHz;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range original position is less than default wideband interfering signal power thresholding;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range terminal position is less than default wideband interfering signal power thresholding.
Like this, to determine the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, detect wideband jamming signal bandwidth.
Preferably, detect wideband jamming signal bandwidth, comprising:
According to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, determine wideband jamming signal bandwidth.
Like this, to obtain wideband jamming signal bandwidth.
Preferably, after detecting wideband jamming signal bandwidth, the method also comprises:
Cell operation frequency range parameter is reverted to initial value.
Like this, so as follow-up community normally work.
A kind of wideband jamming signal bandwidth checkout gear that the embodiment of the present invention provides, this device comprises:
Parameter adjustment unit, for when determining while need to adjust current area working frequency range, adjusts current area working frequency range, and determines the wideband interfering signal power in the cell operation frequency range after adjusting;
Bandwidth detection unit, for when according to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjusting, adjustment and default wideband interfering signal power thresholding, while determining the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, detect wideband jamming signal bandwidth.
Preferably, during wideband interfering signal power in the cell operation frequency range of parameter adjustment unit after determine adjusting, specifically for:
With Physical Resource Block PRBWei unit, the cell operation frequency range after adjusting is divided into a plurality of detection frequency ranges;
Obtain each and detect the wideband interfering signal power in frequency range.
Like this, so that the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, according to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, is determined in bandwidth detection unit.
Preferably, parameter adjustment unit is when determining while need to adjust current area working frequency range, while adjusting current area working frequency range, specifically for:
When the bandwidth of cell operation frequency range is less than 20MHz, the bandwidth of cell operation frequency range is adjusted into 20MHz.
Like this, by adjusting current area working frequency range, make the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, and then detect wideband jamming signal bandwidth.
Preferably, parameter adjustment unit is when determining while need to adjust current area working frequency range, while adjusting current area working frequency range, specifically for:
When be positioned at cell operation frequency range original position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is reduced to default step-length.
Like this, by current area working frequency range, make the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, and then detect wideband jamming signal bandwidth.
Preferably, parameter adjustment unit is when determining while need to adjust current area working frequency range, while adjusting current area working frequency range, specifically for:
When be positioned at cell operation frequency range terminal position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is increased to default step-length.
Like this, by current area working frequency range, make the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, and then detect wideband jamming signal bandwidth.
Preferably, the wideband interfering signal power of bandwidth detection unit in the cell operation frequency range according to the cell operation frequency range after adjusting, after adjusting and default wideband interfering signal power thresholding, while determining the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, specifically for:
When meeting the following conditions, the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting is determined in bandwidth detection unit:
The bandwidth of current area working frequency range is more than or equal to 20MHz;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range original position is less than default wideband interfering signal power thresholding;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range terminal position is less than default wideband interfering signal power thresholding.
Like this, so that the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting is determined in bandwidth detection unit, detect wideband jamming signal bandwidth.
Preferably, bandwidth detection unit when detecting wideband jamming signal bandwidth, specifically for:
According to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, determine wideband jamming signal bandwidth.
Like this, to obtain wideband jamming signal bandwidth.
Preferably, bandwidth detection unit after detecting wideband jamming signal bandwidth, also for:
Cell operation frequency range parameter is reverted to initial value.
Like this, so as follow-up community normally work.
Accompanying drawing explanation
A kind of wideband jamming signal bandwidth detection method schematic flow sheet that Fig. 1 provides for the embodiment of the present invention;
A kind of wideband interference signal frequency range that Fig. 2 provides for the embodiment of the present invention and the scene schematic diagram of cell operation frequency range;
A kind of wideband interference signal frequency range that Fig. 3 provides for the embodiment of the present invention and the scene schematic diagram of cell operation frequency range;
A kind of wideband interference signal frequency range that Fig. 4 provides for the embodiment of the present invention and the scene schematic diagram of cell operation frequency range;
A kind of wideband interference signal frequency range that Fig. 5 provides for the embodiment of the present invention and the scene schematic diagram of cell operation frequency range;
A kind of wideband jamming signal bandwidth detection method schematic flow sheet that Fig. 6 provides for the embodiment of the present invention;
A kind of wideband jamming signal bandwidth structure of the detecting device schematic diagram that Fig. 7 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of wideband jamming signal bandwidth detection method and device, in order to realize the detection of wideband jamming signal bandwidth in LTE system, even if the wideband interference signal in the whole frequency ranges of wideband interference signal under special screne, still can be detected, and workable.
As shown in Figure 1, the embodiment of the present invention provides a kind of wideband jamming signal bandwidth detection method, and the method comprises:
S11, when determining while need to adjust current area working frequency range, adjust current area working frequency range, and determine the wideband interfering signal power in the cell operation frequency range after adjusting;
S12, the wideband interfering signal power in the cell operation frequency range according to the cell operation frequency range after adjusting, after adjusting and default wideband interfering signal power thresholding, while determining the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, detect wideband jamming signal bandwidth.
Preferably, in step S11, the method for the wideband interfering signal power in the cell operation frequency range after definite adjustment comprises:
With Physical Resource Block PRBWei unit, the cell operation frequency range after adjusting is divided into a plurality of detection frequency ranges;
Obtain each and detect the wideband interfering signal power in frequency range;
Preferably, in step S11 when determining that while need to adjust current area working frequency range, the method for adjusting current area working frequency range comprises:
When the bandwidth of cell operation frequency range is less than 20MHz, the bandwidth of cell operation frequency range is adjusted into 20MHz.
Preferably, in step S11 when determining that while need to adjust current area working frequency range, the method for adjusting current area working frequency range comprises:
When determining while need to adjust current area working frequency range, adjust current area working frequency range, comprising:
When be positioned at cell operation frequency range original position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is reduced to default step-length.
Preferably, in step S11 when determining that while need to adjust current area working frequency range, the method for adjusting current area working frequency range comprises:
When be positioned at cell operation frequency range terminal position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is increased to default step-length.
Preferably, in step S12, according to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, determine that the method for the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting comprises:
When meeting the following conditions, determine the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting:
The bandwidth of current area working frequency range is more than or equal to 20MHz;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range original position is less than default wideband interfering signal power thresholding;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range terminal position is less than default wideband interfering signal power thresholding.
Preferably, the method that detects wideband jamming signal bandwidth in step S12 comprises:
According to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, determine wideband jamming signal bandwidth.
Preferably, in step S12, after detection ends now wideband jamming signal bandwidth, the method also comprises:
Cell operation frequency range parameter is reverted to initial value.
A kind of wideband jamming signal bandwidth detection method providing below in conjunction with the instantiation explanation embodiment of the present invention.
Along with LTE system works frequency range is constantly expanded, the broadband signal that cell operation signal can be subject to causing from equipment such as Digital Television, microwaves is disturbed, and the bandwidth of these wideband interference signals is generally that several MHz are to tens MHz.Now, the scene of wideband interference signal frequency range and cell operation frequency range there will be following four kinds of situations:
Situation one: as shown in Figure 2, the frequency range of cell operation frequency range covering wide frequency interference signal;
Situation two: as shown in Figure 3, wideband interference signal frequency range is wider than cell operation frequency range;
Situation three: as shown in Figure 4, in wideband interference signal frequency range, in the frequency range of terminal position and cell operation frequency range, the frequency range of original position exists cross section;
Situation four: as shown in Figure 5, in wideband interference signal frequency range, in the frequency range of original position and cell operation frequency range, the frequency range of terminal position exists cross section.
For above-mentioned four situations, adopt prior art the wideband interference signal in the whole frequency ranges of wideband interference signal in situation one only can be detected, and for situation two to situation four, the wideband interference signal on wideband interference signal frequency range and cell operation frequency range cross section only can be detected, the wideband interference signal in the whole frequency ranges of wideband interference signal can not be detected, also just cannot judge source and the bandwidth of wideband interference signal.
When occurring above-mentioned situation two to one or more situations in situation four, a kind of wideband jamming signal bandwidth detection method providing by the embodiment of the present invention, the scene of wideband interference signal frequency range and cell operation frequency range can be adjusted into above-mentioned situation one, the wideband interference signal in the whole frequency ranges of wideband interference signal now can be detected, and then detect wideband jamming signal bandwidth.
Executive agent in the embodiment of the present invention is base station, in the embodiment of the present invention, need base station to support wide band filter, to adjust cell operation frequency range according to the method in the embodiment of the present invention, it is Extended Cell working frequency range, or adjust after the center frequency point of cell operation frequency range, base station can be operated in the working frequency range of filter.As shown in Figure 6, the flow process that the method providing by the embodiment of the present invention detects wideband jamming signal bandwidth in LTE system is as follows:
S601, wideband interfering signal power thresholding is set;
When wideband interfering signal power thresholding is set, detection Shi YiPRBWei unit due to wideband interference signal, the minimum particle size detecting is 180KHz, according to 180KHz, calculate low noise, the minimum value that can calculate wideband interference signal is-117dBm, rule of thumb can will exceed the minimum value 10dBm of wideband interference signal ,-107dBm, as wideband interfering signal power thresholding, also can be set to other values by wideband interfering signal power thresholding in the present invention.
S602, determine the wideband interfering signal power in the working frequency range of current area;
Step S602 specifically comprises:
YiPRBWei unit, is divided into a plurality of detection frequency ranges by cell operation frequency range;
Obtain each and detect the wideband interfering signal power in frequency range, wherein, wideband interfering signal power is for detecting the difference that receives gross power and available power in frequency range.
The bandwidth of current area working frequency range of take is that 20MHz is example, YiPRBWei unit, the cell operation frequency range that is 20MHz by bandwidth is divided into 100 and detects frequency range (PRB1～PRB100), and the wideband interfering signal power that each detection frequency range detects is as shown in table 1:
Table 1
The method that the embodiment of the present invention provides is applicable to detect the bandwidth of wideband interference signal, wideband disturbs and refers to the frequency range that radio and television are used, comprise picture-and-sound, the bandwidth of general wideband interference signal is in 8MHz left and right, and the bandwidth of operation of other non-wideband interference signal is all at 5MHz or following.Judge that whether interference signal comprises as the method for wideband interference signal:
When the interfering signal power in cell operation frequency range in fixed number or above and continuous detection frequency range is all more than or equal to wideband interfering signal power thresholding, interference signal is defined as to wideband interference signal.Wherein, judge whether interference signal can calculate as the fixed number in wideband interference signal condition, its value is for producing the bandwidth of operation of equipment and the quotient of radio bearer bandwidth (being the bandwidth of PRB frequency range) of interference signal.
After definite interference signal is wideband interference signal, execution step S603; Otherwise the detection of non-wideband interference signal does not belong to the scope of application of the method that the embodiment of the present invention provides, ending method flow process.
Whether the wideband interfering signal power that S603, judgement all detect in frequency range is all more than or equal to wideband interfering signal power thresholding;
If so, perform step S604; Otherwise, the situation one shown in corresponding diagram 2 that is related between wideband interference signal frequency range and cell operation frequency range now, i.e. cell operation frequency range covering wide frequency interference signal frequency range, execution step S610;
S604, judge whether the bandwidth of cell operation frequency range is less than 20MHz;
If so, the situation two shown in corresponding diagram 3 that is related between wideband interference signal frequency range and cell operation frequency range now, wideband interference signal frequency range is wider than cell operation frequency range, performs step S605; Otherwise, execution step S606;
S605, the bandwidth of cell operation frequency range is adjusted into 20MHz;
Execution step S602;
S606, judge whether wideband interference signal frequency range crosses the border;
Basis for estimation: when be positioned at cell operation frequency range original position or terminal position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, determine that wideband interference signal frequency range crosses the border;
Wherein, rule of thumb, can preset number and be set to 10, also can be set to other value, but the value of default number is difficult for excessive.If the detection frequency range number in cell operation frequency range is N, when the bandwidth of cell operation frequency range is 5MHz, 10MHz, 15MHz and 20MHz, the value of corresponding N is respectively 25,50,75 and 100, and now basis for estimation is: when detecting frequency range PRB
1～PRB
10, or PRB
n-9～PRB
nin wideband interfering signal power while being more than or equal to default wideband interfering signal power thresholding, determine that wideband interference signal frequency range crosses the border;
If do not crossed the border, the situation one shown in corresponding diagram 2 that is related between wideband interference signal frequency range and cell operation frequency range now, i.e. cell operation frequency range covering wide frequency interference signal frequency range, execution step S610; If crossed the border, perform step S607;
S607, whether low side crosses the border to judge wideband interference signal frequency range;
Basis for estimation: when be positioned at cell operation frequency range original position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, determine that wideband interference signal frequency range is that low side crosses the border;
If low side crosses the border, the situation three shown in corresponding diagram 4 that is related between wideband interference signal frequency range and cell operation frequency range now, be that the frequency range of terminal position in wideband interference signal frequency range and the frequency range of the interior original position of cell operation frequency range exist cross section, execution step S608;
If do not have low side to cross the border, be now high-end crossing the border, the situation four shown in corresponding diagram 5 that is related between wideband interference signal frequency range and cell operation frequency range, be that the frequency range of original position in wideband interference signal frequency range and the frequency range of the interior terminal position of cell operation frequency range exist cross section, execution step S609;
S608, the center frequency point of cell operation frequency range is reduced to default step-length;
Execution step S602;
S609, the center frequency point of cell operation frequency range is increased to default step-length;
Execution step S602;
Wherein, in step S608 and step S609, rule of thumb, step-length can be set in advance as to 5MHz, also step-length can be set in advance as to other value.Take preset step-length as 5MHz be example, suppose that cell operation frequency range is for [2590MHz, 2610MHz], the bandwidth of cell operation frequency range is 20MHz, the center frequency point of cell operation frequency range is 2600MHz; After step S610, the center frequency point of cell operation frequency range is adjusted into 2595MHz, and cell operation frequency range changes to [2585MHz, 2605MHz], and the bandwidth of cell operation frequency range is constant, is still 20MHz; Step S611 in like manner, repeats no more herein;
S610, detection wideband jamming signal bandwidth;
The method of step S610 comprises:
Definite cut-off is cell operation frequency range F now
w, and cell operation frequency range F
wwideband interfering signal power in interior each detection frequency range PRB;
By cell operation frequency range F
wlearn the center frequency point F of cell operation frequency range
m, or this center frequency point F
mfor the center frequency point of the cell operation frequency range after step S608 or S609 adjustment, pass through formula F
s=F
m-F
w* 0.5+F
w* 0.05, in calculation plot working frequency range, first detects frequency range PRB
1initial frequency F
s;
According to cell operation frequency range F
win each detects the wideband interfering signal power in frequency range PRB, and default wideband interfering signal power thresholding, determines continuous detection frequency range PRB
v～PRB
v+minterior wideband interfering signal power is all more than or equal to wideband interfering signal power thresholding, and the working frequency points that rises, stops of wideband interference signal frequency range is respectively: F
s+ (v-1) * 0.18MHz and F
s+ (v+m) * 0.18MHz;
According to the rising of wideband interference signal frequency range, working frequency points only, determine wideband jamming signal bandwidth.
S611, cell operation frequency range parameter is reverted to initial value, process ends;
Corresponding with the method that the invention described above embodiment provides, as shown in Figure 7, a kind of wideband jamming signal bandwidth checkout gear that the embodiment of the present invention provides, this device comprises:
Parameter adjustment unit 71, for when determining while need to adjust current area working frequency range, adjusts current area working frequency range, and determines the wideband interfering signal power in the cell operation frequency range after adjusting;
Bandwidth detection unit 72, for when according to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjusting, adjustment and default wideband interfering signal power thresholding, while determining the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, detect wideband jamming signal bandwidth.
Preferably, during wideband interfering signal power in the cell operation frequency range of parameter adjustment unit 71 after determine adjusting, specifically for:
With Physical Resource Block PRBWei unit, the cell operation frequency range after adjusting is divided into a plurality of detection frequency ranges;
Obtain each and detect the wideband interfering signal power in frequency range.
Preferably, parameter adjustment unit 71 is when determining while need to adjust current area working frequency range, while adjusting current area working frequency range, specifically for:
When the bandwidth of cell operation frequency range is less than 20MHz, the bandwidth of cell operation frequency range is adjusted into 20MHz.
Preferably, parameter adjustment unit 71 is when determining while need to adjust current area working frequency range, while adjusting current area working frequency range, specifically for:
When be positioned at cell operation frequency range original position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is reduced to default step-length.
Preferably, parameter adjustment unit 71 is when determining while need to adjust current area working frequency range, while adjusting current area working frequency range, specifically for:
When be positioned at cell operation frequency range terminal position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is increased to default step-length.
Preferably, the wideband interfering signal power of bandwidth detection unit 72 in the cell operation frequency range according to the cell operation frequency range after adjusting, after adjusting and default wideband interfering signal power thresholding, while determining the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, specifically for:
When meeting the following conditions, the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting is determined in bandwidth detection unit 72:
The bandwidth of current area working frequency range is more than or equal to 20MHz;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range original position is less than default wideband interfering signal power thresholding;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range terminal position is less than default wideband interfering signal power thresholding.
Preferably, bandwidth detection unit 72 when detecting wideband jamming signal bandwidth, specifically for:
According to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, determine wideband jamming signal bandwidth.
Preferably, bandwidth detection unit 72 after detecting wideband jamming signal bandwidth, also for:
Cell operation frequency range parameter is reverted to initial value.
Concrete, parameter adjustment unit 71 and bandwidth detection unit 7 can be realized by entities such as processors, and the present invention is not limited to the entity of realizing these modules.
Those skilled in the art should understand, embodiments of the invention can be provided as method, device or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (device) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (16)
1. a wideband jamming signal bandwidth detection method, is characterized in that, the method comprises:
When determining while need to adjust current area working frequency range, adjust current area working frequency range, and determine the wideband interfering signal power in the cell operation frequency range after adjusting;
Wideband interfering signal power in the cell operation frequency range according to the cell operation frequency range after adjusting, after adjusting and default wideband interfering signal power thresholding, while determining the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, detect wideband jamming signal bandwidth.
2. the method for claim 1, is characterized in that, the wideband interfering signal power in the cell operation frequency range after described definite adjustment, comprising:
With Physical Resource Block PRBWei unit, the cell operation frequency range after adjusting is divided into a plurality of detection frequency ranges;
Obtain each and detect the wideband interfering signal power in frequency range.
3. the method for claim 1, is characterized in that, when determining while need to adjust current area working frequency range, adjusts current area working frequency range, comprising:
When the bandwidth of cell operation frequency range is less than 20MHz, the bandwidth of cell operation frequency range is adjusted into 20MHz.
4. method as claimed in claim 2, is characterized in that, when determining while need to adjust current area working frequency range, adjusts current area working frequency range, comprising:
When be positioned at cell operation frequency range original position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is reduced to default step-length.
5. method as claimed in claim 2, is characterized in that, when determining while need to adjust current area working frequency range, adjusts current area working frequency range, comprising:
When be positioned at cell operation frequency range terminal position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is increased to default step-length.
6. the method for claim 1, it is characterized in that, according to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, the frequency range of determining the cell operation frequency range covering wide frequency interference signal after adjusting, comprising:
When meeting the following conditions, determine the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting:
The bandwidth of current area working frequency range is more than or equal to 20MHz;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range original position is less than default wideband interfering signal power thresholding;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range terminal position is less than default wideband interfering signal power thresholding.
7. the method for claim 1, is characterized in that, described detection wideband jamming signal bandwidth, comprising:
According to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, determine wideband jamming signal bandwidth.
8. the method for claim 1, is characterized in that, after detecting wideband jamming signal bandwidth, the method also comprises:
Cell operation frequency range parameter is reverted to initial value.
9. a wideband jamming signal bandwidth checkout gear, is characterized in that, this device comprises:
Parameter adjustment unit, for when determining while need to adjust current area working frequency range, adjusts current area working frequency range, and determines the wideband interfering signal power in the cell operation frequency range after adjusting;
Bandwidth detection unit, for when according to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjusting, adjustment and default wideband interfering signal power thresholding, while determining the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, detect wideband jamming signal bandwidth.
10. device as claimed in claim 9, is characterized in that, during wideband interfering signal power in the cell operation frequency range of described parameter adjustment unit after determine adjusting, specifically for:
With Physical Resource Block PRBWei unit, the cell operation frequency range after adjusting is divided into a plurality of detection frequency ranges;
Obtain each and detect the wideband interfering signal power in frequency range.
11. devices as claimed in claim 9, is characterized in that, described parameter adjustment unit is when determining while need to adjust current area working frequency range, while adjusting current area working frequency range, specifically for:
When the bandwidth of cell operation frequency range is less than 20MHz, the bandwidth of cell operation frequency range is adjusted into 20MHz.
12. devices as claimed in claim 10, is characterized in that, described parameter adjustment unit is when determining while need to adjust current area working frequency range, while adjusting current area working frequency range, specifically for:
When be positioned at cell operation frequency range original position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is reduced to default step-length.
13. devices as claimed in claim 10, is characterized in that, described parameter adjustment unit is when determining while need to adjust current area working frequency range, while adjusting current area working frequency range, specifically for:
When be positioned at cell operation frequency range terminal position continuously the wideband interfering signal power of the detection frequency range of default number is more than or equal to default wideband interfering signal power thresholding time, the center frequency point of cell operation frequency range is increased to default step-length.
14. devices as claimed in claim 9, it is characterized in that, the wideband interfering signal power of described bandwidth detection unit in the cell operation frequency range according to the cell operation frequency range after adjusting, after adjusting and default wideband interfering signal power thresholding, while determining the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting, specifically for:
When meeting the following conditions, the frequency range of the cell operation frequency range covering wide frequency interference signal after adjusting is determined in described bandwidth detection unit:
The bandwidth of current area working frequency range is more than or equal to 20MHz;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range original position is less than default wideband interfering signal power thresholding;
The wideband interfering signal power of presetting continuously the detection frequency range of number that is positioned at current area working frequency range terminal position is less than default wideband interfering signal power thresholding.
15. devices as claimed in claim 9, is characterized in that, described bandwidth detection unit when detecting wideband jamming signal bandwidth, specifically for:
According to the wideband interfering signal power in the cell operation frequency range after the cell operation frequency range after adjustment, adjustment and default wideband interfering signal power thresholding, determine wideband jamming signal bandwidth.
16. devices as claimed in claim 9, is characterized in that, described bandwidth detection unit after detecting wideband jamming signal bandwidth, also for:
Cell operation frequency range parameter is reverted to initial value.
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| CN104185205B (en) | 2017-12-05 |
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