CN101917361A - Repeater carrier frequency setting method and system and repeater - Google Patents
Repeater carrier frequency setting method and system and repeater Download PDFInfo
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Abstract
The invention is applicable in the technical field of communication and provides a repeater carrier frequency setting method, a repeater carrier frequency setting system and a repeater. The method comprises the following steps: detecting the power value of each downlink input carrier in the repeater; selecting the carrier channel number of a carrier of which the power value exceeds a preset carrier power threshold; and setting the carrier frequency corresponding to the repeater according to the selected carrier channel number. When the repeater carrier frequency setting method, the repeater carrier frequency setting system and the repeater are used, the power value of each downlink input carrier in the repeater is detected and the carrier frequency corresponding to the repeater is set according to the carrier channel number of a selected carrier of which the power value exceeds the preset carrier power threshold; and thus, the automatic setting of the carrier frequency can be realized.
Description
Technical field
The invention belongs to communication technical field, relate in particular to a kind of method, system and repeater that the carrier frequency of repeater is set.
Background technology
The repeater belongs to the frequency multiplying arrangement, is meant to play a kind of radio transmission transferring equipment that signal strengthens in the wireless communication transmissions process.The basic function of repeater is exactly a radiofrequency signal power intensifier.The repeater can guarantee the network coverage under the prerequisite that does not increase base station number, its cost is well below the micro cellular system that effect same is arranged.The repeater is to solve a kind of preferred version that communication network extends covering power.It has compared advantages such as simple in structure, that investment is less and easy for installation with the base station, can be widely used in the blind area and the weak district that are difficult to cover, as various places such as market, hotel, airport, harbour, station, gymnasium, amusement hall, subway, tunnel, highway, islands, improve communication quality, solve problems such as call drop.
In the prior art, common repeater does not possess the function that carrier frequency is set automatically as the frequency selecting repeater in the GSM repeater, and this will limit the use of frequency selecting repeater.Such as, the GSM network is very flourishing now, owing to capacity problem, need change the carrier frequency of coverage cell in some coverage cell again, and the carrier frequency of the frequency selecting repeater that coverage cell is used must and then be adjusted.If, the carrier frequency of coverage cell change, and call drop then may appear in the not change of carrier frequency of the used frequency selecting repeater of coverage cell, signal such as can't connect at phenomenon, causes the GSM network cisco unity malfunction of repeater coverage cell.Again since the work carrier wave of existing GSM frequency selecting repeater must operate the local monitor unit or handle remote repeater network management center and finish setting by the attendant.Thereby, in some engineering opening operations,, just can not open repeater engineering website as requested if the engineering staff does not know the carrier frequency of sampled signal.Say again, now the engineering staff need through training just can operation setting GSM frequency selecting repeater carrier frequency, and during part GSM frequency selecting repeater operation setting carrier frequency, instrument that need be special.So just limited GSM frequency selecting repeater application flexibility and convenience, brought inconvenience, also brought the waste of part manpower and materials to frequency selecting repeater replacing carrier frequency and opening of engineering website.
In sum, common repeater can't be provided with carrier frequency automatically in the prior art.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method that the carrier frequency of repeater is set, and is intended to solve the problem that repeater common in the prior art can't be provided with carrier frequency automatically.
The embodiment of the invention is achieved in that a kind of method that the carrier frequency of repeater is set, and said method comprising the steps of:
Detect the performance number of each carrier wave of descending input in the repeater;
Choose the carrier channel number that performance number surpasses the carrier wave of the carrier power decision threshold set in advance;
The carrier frequency of repeater correspondence number is set according to the carrier channel of choosing.
The embodiment of the invention also provides a kind of system that the carrier frequency of repeater is set, and described system comprises:
Detection module is used for detecting the performance number of each carrier wave of the descending input in repeater;
Choose module, be used to choose the carrier channel number that performance number surpasses the carrier wave of the carrier power decision threshold that sets in advance;
Module is set, is used for number being provided with the carrier frequency of repeater correspondence according to the carrier channel chosen.
The embodiment of the invention also provides a kind of repeater, and described repeater comprises the described system that the carrier frequency of repeater is set.
The embodiment of the invention compared with prior art, beneficial effect is: by detecting the performance number of each carrier wave of descending input in the repeater, number the carrier frequency of repeater correspondence is set according to choosing the carrier channel that performance number surpasses the carrier wave of the carrier power decision threshold set in advance, thereby can realizes being provided with automatically carrier frequency.
Description of drawings
Fig. 1 is the flow chart of the method for the carrier frequency that the repeater is set that provides of the embodiment of the invention;
Fig. 2 is first sub-process figure of the method for the carrier frequency that the repeater is set that provides of the embodiment of the invention;
Fig. 3 is second sub-flow chart of the method for the carrier frequency that the repeater is set that provides of the embodiment of the invention;
Fig. 4 is the 3rd a sub-flow chart of the method for the carrier frequency that the repeater is set that provides of the embodiment of the invention
Fig. 5 is the 4th a sub-flow chart of the method for the carrier frequency that the repeater is set that provides of the embodiment of the invention;
Fig. 6 is the 5th a sub-flow chart of the method for the carrier frequency that the repeater is set that provides of the embodiment of the invention;
Fig. 7 is the 6th a sub-flow chart of the method for the carrier frequency that the repeater is set that provides of the embodiment of the invention;
Fig. 8 is the module frame chart of the system of the carrier frequency that the repeater is set that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention, by detecting the performance number of each carrier wave of descending input in the repeater, number the carrier frequency of repeater correspondence is set according to choosing the carrier channel that performance number surpasses the carrier wave of the carrier power decision threshold set in advance, thereby can realizes being provided with automatically carrier frequency.
See also Fig. 1, a kind of method that the carrier frequency of repeater is set that the embodiment of the invention provides said method comprising the steps of:
S1: the performance number that detects each carrier wave of descending input in the repeater;
S2: choose the carrier channel number that performance number surpasses the carrier wave of the carrier power decision threshold set in advance;
S3: the carrier frequency that the repeater correspondence number is set according to the carrier channel of choosing.
See also Fig. 2, in one embodiment of the invention, described step S1 specifically can realize by following steps:
S101: obtain the descending input signal in repeater;
S102: the descending input signal that will obtain carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
S103: the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtain digital signal;
S104: the digital signal process frequency bandwidth digital zona pectinata bandpass filter identical with obtaining with the physical channel spacing frequency of repeater, carry out filtering, obtain the digital signal of a plurality of separation;
S105:, calculate the performance number of corresponding each carrier wave by the digital signal that certain time length is added up a plurality of separation of acquisition respectively.
In an embodiment of the present invention, described repeater specifically is the GSM frequency selecting repeater; Described GSM frequency selecting repeater physical channel spacing frequency is 200KHz, and the then corresponding concrete frequency bandwidth of described digital zona pectinata bandpass filter is the digital zona pectinata bandpass filter of 200KHz.
See also Fig. 3, in one embodiment of the invention, described step S1 specifically also can realize by following steps:
S111: obtain the descending input signal in repeater;
S112: the descending input signal that will obtain carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
S113: the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtain digital signal;
S114: the digital signal that obtains is carried out the Digital Down Convert conversion, obtain the baseband signal of zero-frequency;
S115: the baseband signal that obtains is carried out Fourier transform, obtain spectrum component;
S116:,, calculate the performance number of each carrier wave of corresponding descending input from low to high with the spectrum component that obtains or order from high to low by the physical channel spacing frequency statistical channel performance number of certain time length and repeater according to frequency.
In an embodiment of the present invention, when described repeater can be specially the GSM frequency selecting repeater, described physical channel spacing frequency is specially 200KHz.
See also Fig. 4, in one embodiment of the invention, described step S1 specifically also can realize by following steps:
S121: obtain the descending input signal in repeater;
S122: the descending input signal that will obtain carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
S123: the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtain digital signal;
S124: the digital signal that obtains is carried out the Digital Down Convert conversion, obtain the baseband signal of zero-frequency;
S125: with the baseband signal that obtains according to the bandwidth identical, one by one by the frequency bandwidth wave digital lowpass filter identical with the physical channel spacing frequency of repeater with the physical channel spacing frequency of repeater;
S126: calculate performance number one by one by the carrier wave of described wave digital lowpass filter by certain time length.
In an embodiment of the present invention, when described repeater can be specially the GSM frequency selecting repeater, described physical channel spacing frequency is specially 200KHz, and described wave digital lowpass filter then is specially the wave digital lowpass filter that frequency is 200KHz.
See also Fig. 5, in an embodiment of the present invention, described step S2 specifically can realize by following steps:
S201: the performance number of detected carrier wave and the carrier power decision threshold that sets in advance are compared, and record surpasses the carrier channel number of the carrier wave of carrier power decision threshold;
S202: statistics surpasses the quantity of carrier channel number of the carrier wave of carrier power decision threshold, is designated as M;
S203: judge whether M counts F greater than the maximum frequency-selecting of repeater support, if then enter step S204, otherwise enter step S206;
S204: will arrange from big to small according to power above the carrier wave of carrier power decision threshold;
S205: in the carrier wave of arranging, choose F carrier channel number, and record variable parameter Mn value is F according to order from big to small;
S206: record variable parameter Mn value is M, enters step S3 then.
See also Fig. 6, in an embodiment of the present invention, described step S3 specifically realizes by following steps:
S301: judge whether it is the discriminatory carrier frequency first time, if then enter step S302, otherwise enter step S304;
S302: open Mn repeater carrier switch;
S303: the carrier wave that the repeater of the carrier channel correspondence that carrier switch is opened is set;
S304: upgrade the frequency that the repeater is set.
See also Fig. 7, in an embodiment of the present invention, the step that described step S304 upgrades the frequency that the repeater is set specifically can realize by following steps:
S701: the performance number that detects each carrier wave of descending input in the repeater;
S702: choose the carrier channel number that performance number surpasses the carrier wave of the carrier power decision threshold set in advance;
S703: judge whether carrier channel that the carrier channel choose number and described repeater be provided with is number consistent, if, then enter step S704, then enter step S705 if not;
S704: the carrier channel of choosing number needn't be upgraded, and returns step S701, with real-time update;
S705: judge whether the carrier channel choose number is the subclass that described repeater has been provided with carrier wave, if, then return step S704, then enter step S706 if not;
S706: whether the quantity sum of judging the quantity of the carrier channel choose number and carrier channel that described repeater has been provided with number is no more than F, if, then enter step S707, then enter step S708 if not;
S707: number open the carrier switch that is not provided with according to the carrier channel of choosing, and carrier frequency corresponding is set, return step S701 then, with real-time update;
S708: the carrier channel that the carrier channel chosen number and described repeater have been provided with number compares, whether the quantity of judging inconsistent carrier channel number is no more than the carrier switch that described repeater is not provided with, if then return step S707, otherwise enter step S709;
S709: whether the quantity of judging the carrier channel choose number equals F, if, enter step S712, if not, then enter step S710;
S710: judge whether carrier switch that described repeater is supported is not opened in addition, if, then enter step 713, return step S701 then, with real-time update, if not, then enter step S711;
S711: the carrier channel chosen number is replaced service time carrier channel from long to short number successively, return step S701 then, with real-time update.
S712: open the carrier switch that the repeater is supported, and the carrier frequency of repeater number is set, return step S701 then, with real-time update according to the carrier channel of choosing;
S713: open carrier switch, and the carrier frequency of the carrier switch open is set, then remaining channel number in the carrier channel chosen number is replaced successively service time carrier channel from long to short number, return step S701 then, with real-time update;
For technical scheme of the present invention better is described, existing method with China Mobile GSM 900Mhz four frequency selecting repeater carrier waves identification frequency illustrates.
As everyone knows, GSM mobile network's air interface combines frequency division multiple access (FDMA) and two kinds of technology of time division multiple access (TDMA), when coming detected carrier by the method for the intrinsic characteristics of signals of GSM, need consider the characteristic of frequency division and time-division.Frequency division multiple access, the frequency interval of each physical channel is 200kHz; Time division multiple access, the duration of each tdma frame are about 4.615 milliseconds, and each tdma frame is divided into 8 time slots again, and the duration of each time slot is about 577 microseconds, and each time slot contains 156.25 code elements, and the duration that each code element takies is about 3.69 microseconds.So in the time of detected carrier, as long as interval bandwidth and lasting duration according to 200kHz are also judged the channel occupancy situation more than or equal to the energy of the method detection physical channel of 3.69 microseconds, just can identify carrier wave and whether be assigned with, thereby identify carrier frequency.
When adopting the GSM frequency selecting repeater, the frequency that the repeater is supported is general to be consistent with the information source sub-district of choosing.Such as, GSM information source sub-district is 4 carrier waves, the frequency selecting repeater of selecting for use so is 4 frequency-selectings normally.Here just obtaining carrier frequency automatically with GSM four frequency selecting repeaters is example.
When used the repeater, the information source intensity of choosing generally can be greater than-80dBm, and the intensity of the thermal noise of 200KHz is about-121dBm.The intensity of GSM repeater downstream signal and the power of thermal noise have the difference of 40dB, and this brings convenience decision threshold is set.Here with-90dBm as decision threshold, surpass this threshold value, just can think to detect the GSM signal.
According to national frequency partition, the GSM mobile network frequency range of the 900MHz of China Mobile is up to be 890MHz～909MHz, and descending is 935MHz～954MHz.According to the gsm protocol requirement, up channel number and down channel be 45MHz number at interval, number just up frequency can be set through calculating so only need obtain down channel.First frequency of China Mobile GSM downstream signal is 935.2MHz, and last frequency is 953.8MHz, and other frequency is: 935MHz+N*0.2MHz, and wherein N is the integer between the 1-94, N is also referred to as channel number.So, when the repeater carrier wave is discerned automatically, can identify carrier wave as long as detect the power of these 94 channels.
Suppose that the carrier channel that the repeater obtains the information source sub-district number is 1,10,20,30, wherein channel number is that 1 carrier wave is Broadcast Control Channel (BCCH) channel, and remaining is Traffic Channel (TCH) channel, and the watt level of information source is-70dBm.The maximum carrier number of supposing the support of GSM frequency selecting repeater equipment is 4.
The technical scheme of application drawing 1, GSM frequency selecting repeater realize that the step of discriminatory carrier frequency is specially:
S1 ': the performance number that detects each carrier wave of descending input in the GSM frequency selecting repeater;
S2 ': choose the carrier channel number that performance number surpasses the carrier wave of the carrier power decision threshold set in advance.
S3 ': the carrier frequency that GSM frequency selecting repeater correspondence number is set according to the carrier channel of choosing.
The concrete scheme of application drawing 2, the step of performing step S1 ' specifically comprises:
S101 ': obtain the descending input signal of GSM frequency selecting repeater, in concrete the application, generally can receive the downstream signal of information source sub-district from the reception antenna of GSM frequency selecting repeater;
S102 ': the descending input signal that will obtain carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
S103 ': the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtain digital signal;
S104 ':, obtain the digital signal of the 200KHz of a plurality of separation with the digital signal that obtains digital zona pectinata bandpass filter through 200KHz;
S105 ': the 200KHz digital signal of a plurality of separation that statistics obtains, with performance number more than or equal to each carrier wave of duration calculation of 1 GSM code element.According to detected signal, the power of channel number 1,10,20,30 is about-70dBm, and remaining is about-121dBm.
The technical scheme of application drawing 3, realize that the step of rapid S1 ' specifically comprises:
S111 ': obtain the descending input signal of GSM frequency selecting repeater; Generally can receive the downstream signal of information source sub-district from the reception antenna of GSM frequency selecting repeater.
S112 ': the descending input signal that will obtain carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
S113 ': the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtain digital signal;
S114 ': the digital signal that obtains is carried out the Digital Down Convert conversion, obtain the baseband signal of zero-frequency;
S115 ': the baseband signal that obtains is carried out Fourier transform, obtain spectrum component;
S116 ':,, obtain the performance number of each carrier wave of descending input from low to high with the spectrum component that obtains or order from high to low according to the physical channel spacing frequency 200KHz statistical channel performance number of GSM frequency selecting repeater according to frequency.
According to detected energy spectral density, the power of channel number 1,10,20,30 is about-70dBm, and remaining is about-121dBm.
The technical scheme of application drawing 4, realize that the step of rapid S1 ' specifically comprises:
S121 ': obtain the descending input signal of GSM frequency selecting repeater; Generally can receive the downstream signal of information source sub-district from the reception antenna of GSM frequency selecting repeater.
S122 ': the descending input signal that will obtain carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
S123 ': the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtain digital signal;
S124 ': the digital signal that obtains is carried out the Digital Down Convert conversion, obtain the baseband signal of zero-frequency;
S125 ': with the baseband signal that obtains according to the bandwidth 200KHz identical with the physical channel spacing frequency of repeater the identical wave digital lowpass filter of physical channel spacing frequency 200KHz by frequency and GSM frequency selecting repeater one by one;
S126 ': calculate one by one performance number by the carrier wave of described wave digital lowpass filter;
According to the watt level that each channel number calculates, the power of channel number 1,10,20,30 is about-70dBm, and remaining is about-121dBm.
The technical scheme of application drawing 5, described step S2 ' specifically can realize by following steps:
S201 ': the performance number of detected carrier wave and the carrier power decision threshold that sets in advance are compared, and record surpasses the carrier channel number of the carrier wave of decision threshold.
Because the power of detected channel number 1,10,20,30 is about-70dBm, remaining is about-121dBm, and the carrier power decision threshold that is provided with is-90dBm to have only channel number 1,10,20,30 to go on record so.
S202 ': statistics surpasses the quantity of carrier channel number of the carrier wave of decision threshold, is designated as M;
Owing to detect 1,10,20,30 4 carrier waves of channel number, so M=4.
S203 ': judge whether M counts F greater than the maximum frequency-selecting of repeater support, if then enter step S204 ', otherwise record variable parameter Mn value is M, and enters step S3 ';
M=4 is the maximum carrier number that repeater equipment is supported.So directly just enter step S204 '.
S204 ': will arrange from big to small according to power above the carrier wave of carrier power decision threshold;
S205 ': in the carrier wave of arranging, choose F carrier channel number, and record variable parameter Mn value is F according to order from big to small
The technical scheme of application drawing 6, described step S3 ' can specifically realize by following steps:
S301 ': judge whether it is the discriminatory carrier frequency first time, if then forward e2 to; Otherwise forward e4 to;
S302 ': open 4 repeater carrier switches;
S303 ': the repeater carrier wave that channel number 1,10,20,30 correspondences that carrier switch is opened are set;
S304 ': upgrade the frequency that the repeater is set;
The step that described step S304 ' upgrades the frequency that the repeater is set specifically can realize by the technical scheme of application drawing 7.
See also Fig. 8, the embodiment of the invention provides a kind of system that the carrier frequency of repeater is set, and described system comprises:
Choose module 802, be used to choose the carrier channel number that performance number surpasses the carrier wave of the carrier power decision threshold that sets in advance;
In one embodiment of the invention, described detection module specifically comprises:
Acquiring unit is used to obtain the descending input signal in repeater;
The medium-frequency transformation unit, the descending input signal that is used for obtaining carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
AD conversion unit is used for the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtains digital signal;
Filter unit, the digital signal that is used for obtaining is carried out filtering through the frequency bandwidth digital zona pectinata bandpass filter identical with the physical channel spacing frequency of repeater, obtains the digital signal of a plurality of separation;
Computing unit is used for adding up respectively by certain time length the digital signal of a plurality of separation of acquisition, calculates the performance number of corresponding each carrier wave.
In one embodiment of the invention, described detection module can also specifically comprise:
Acquiring unit is used to obtain the descending input signal in repeater;
The medium-frequency transformation unit, the descending input signal that is used for obtaining carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
AD conversion unit is used for the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtains digital signal;
The down-frequency conversion unit is used for the digital signal that obtains is carried out the Digital Down Convert conversion, obtains the baseband signal of zero-frequency;
Fourier transform unit is used for the baseband signal that obtains is carried out Fourier transform, obtains spectrum component;
Statistic unit is used for the spectrum component that will obtain according to frequency or order from high to low from low to high, by the physical channel spacing frequency statistical channel performance number of certain time length and repeater, calculates the performance number of each carrier wave of corresponding descending input.
In one embodiment of the invention, described detection module can also specifically comprise:
Acquiring unit is used for and will obtains the descending input signal in repeater;
The medium-frequency transformation unit, the descending input signal that is used for obtaining carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
AD conversion unit is used for the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtains digital signal;
The down-frequency conversion unit is used for the digital signal that obtains is carried out the Digital Down Convert conversion, obtains the baseband signal of zero-frequency;
Filter unit one by one, the baseband signal that is used for obtaining is according to the bandwidth identical with the physical channel spacing frequency of repeater, one by one by the frequency bandwidth wave digital lowpass filter identical with the physical channel spacing frequency of repeater;
Computing unit is used for calculating performance number by the carrier wave of described wave digital lowpass filter one by one by certain time length.
In one embodiment of the invention, the described module of choosing specifically comprises:
Record cell is used for the performance number of detected carrier wave and the carrier power decision threshold that sets in advance are compared, and record surpasses the carrier channel number of the carrier wave of carrier power decision threshold;
Statistic unit is used to add up the quantity above the carrier channel of the carrier wave of decision threshold number, is designated as M;
Judging unit is used to judge whether M counts F greater than the maximum frequency-selecting of repeater support;
The value unit, be used for when F is counted in the maximum frequency-selecting that judgment unit judges M supports greater than the repeater, then will arrange from big to small according to power above the carrier wave of carrier power decision threshold, in the carrier wave of arranging, choose F carrier channel number then according to order from big to small, and record variable parameter Mn value is F, when judgment unit judges M was not more than the maximum frequency-selecting of supporting the repeater and counts F, then record variable parameter Mn value was M.
In one embodiment of the invention, the described module that is provided with specifically comprises:
First judging unit, being used to judge whether is the discriminatory carrier frequency first time;
The unit is set, when being used for described first judgment unit judges and being for the first time the discriminatory carrier frequency, then opens Mn repeater carrier switch, the carrier wave of the repeater of the carrier channel correspondence that carrier switch is opened is set then; When described first judgment unit judges is not for the first time during the discriminatory carrier frequency, then upgrade the frequency that the repeater is set.
In one embodiment of the invention, describedly the unit is set as shown in Figure 7, specifically comprises with the step that the repeater frequency newly is set:
S701: the performance number that detects each carrier wave of descending input in the repeater;
S702: choose the carrier channel number that performance number surpasses the carrier wave of the carrier power decision threshold set in advance;
S703: judge whether carrier channel that the carrier channel choose number and described repeater be provided with is number consistent, if, then enter step S704, then enter step S705 if not;
S704: the carrier channel of choosing number needn't be upgraded, and returns step S701, with real-time update;
S705: judge whether the carrier channel choose number is the subclass that described repeater has been provided with carrier wave, if, then return step S704, then enter step S706 if not;
S706: whether the quantity sum of judging the quantity of the carrier channel choose number and carrier channel that described repeater has been provided with number is no more than F, if, then enter step S707, then enter step S708 if not;
S707: number open the carrier switch that is not provided with according to the carrier channel of choosing, and carrier frequency corresponding is set, return step S701 then, with real-time update;
S708: the carrier channel that the carrier channel chosen number and described repeater have been provided with number compares, whether the quantity of judging inconsistent carrier channel number is no more than the carrier switch that described repeater is not provided with, if then return step S707, otherwise enter step S709;
S709: whether the quantity of judging the carrier channel choose number equals F, if, enter step S712, if not, then enter step S710;
S710: judge whether carrier switch that described repeater is supported is not opened in addition, if, then enter step 713, return step S701 then, with real-time update, if not, then enter step S711;
S711: the carrier channel chosen number is replaced service time carrier channel from long to short number successively, return step S701 then, with real-time update.
S712: open the carrier switch that the repeater is supported, and the carrier frequency of repeater number is set, return step S701 then, with real-time update according to the carrier channel of choosing;
S713: open carrier switch, and the carrier frequency of the carrier switch open is set, then remaining channel number in the carrier channel chosen number is replaced successively service time carrier channel from long to short number, return step S701 then, with real-time update;
By detecting the performance number of each carrier wave of descending input in the repeater, number the carrier frequency of repeater correspondence is set according to choosing the carrier channel that performance number surpasses the carrier wave of the carrier power decision threshold that sets in advance, thereby can realizes being provided with automatically carrier frequency.
The embodiment of the invention also provides a kind of repeater, and described repeater comprises the described system that the carrier frequency of repeater is set.
Method, system and the repeater that the carrier frequency of repeater is set of the present invention, by detecting the performance number of each carrier wave of descending input in the repeater, number the carrier frequency of repeater correspondence is set according to choosing the carrier channel that performance number surpasses the carrier wave of the carrier power decision threshold set in advance, thereby can realizes being provided with automatically carrier frequency.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method that the carrier frequency of repeater is set is characterized in that, said method comprising the steps of:
Detect the performance number of each carrier wave of descending input in the repeater;
Choose the carrier channel number that performance number surpasses the carrier wave of the carrier power decision threshold set in advance;
The carrier frequency of repeater correspondence number is set according to the carrier channel of choosing.
2. the method that the carrier frequency of repeater is set as claimed in claim 1 is characterized in that, the step of the performance number of each carrier wave of descending input specifically may further comprise the steps in the described detection repeater:
Obtain the descending input signal in repeater;
The descending input signal that obtains is carried out medium-frequency transformation, obtain intermediate-freuqncy signal;
The intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtain digital signal;
The digital signal process frequency bandwidth digital zona pectinata bandpass filter identical with the physical channel spacing frequency of repeater with obtaining carries out filtering, obtains the digital signal of a plurality of separation;
By the digital signal that certain time length is added up a plurality of separation of acquisition respectively, calculate the performance number of corresponding each carrier wave.
3. the method that the carrier frequency of repeater is set as claimed in claim 1 is characterized in that, the step of the performance number of each carrier wave of descending input specifically may further comprise the steps in the described detection repeater:
Obtain the descending input signal in repeater;
The descending input signal that obtains is carried out medium-frequency transformation, obtain intermediate-freuqncy signal;
The intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtain digital signal;
The digital signal that obtains is carried out the Digital Down Convert conversion, obtain the baseband signal of zero-frequency;
The baseband signal that obtains is carried out Fourier transform, obtain spectrum component;
By the physical channel spacing frequency statistical channel performance number of certain time length and repeater, calculate the performance number of each carrier wave of corresponding descending input from low to high with the spectrum component that obtains or order from high to low, according to frequency.
4. the method that the carrier frequency of repeater is set as claimed in claim 1 is characterized in that, the step of the performance number of each carrier wave of descending input specifically may further comprise the steps in the described detection repeater:
Obtain the descending input signal in repeater;
The descending input signal that obtains is carried out medium-frequency transformation, obtain intermediate-freuqncy signal;
The intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtain digital signal;
The digital signal that obtains is carried out the Digital Down Convert conversion, obtain the baseband signal of zero-frequency;
To obtain baseband signal according to the bandwidth identical, one by one by the frequency bandwidth wave digital lowpass filter identical with the physical channel spacing frequency of repeater with the physical channel spacing frequency of repeater;
Calculate performance number one by one by certain time length by the carrier wave of described wave digital lowpass filter.
5. as each described method that the carrier frequency of repeater is set in the claim 1 to 4, it is characterized in that, describedly choose the step of carrier channel number that performance number surpasses the carrier wave of the carrier power decision threshold set in advance and specifically may further comprise the steps:
The performance number of detected carrier wave and the carrier power decision threshold that sets in advance are compared, and record surpasses the carrier channel number of the carrier wave of carrier power decision threshold;
Statistics surpasses the quantity of carrier channel number of the carrier wave of carrier power decision threshold, is designated as M;
Judge whether M counts F greater than the maximum frequency-selecting of repeater support, if, then will arrange from big to small according to power above the carrier wave of carrier power decision threshold, in the carrier wave of arranging, choose F carrier channel number then according to order from big to small, and record variable parameter Mn value is F, otherwise then record variable parameter Mn value is M;
The step that the carrier channel that described basis is chosen number is provided with the carrier frequency of repeater correspondence specifically comprises:
Judge whether it is discriminatory carrier frequency for the first time, if, then open Mn repeater carrier switch, the carrier wave of the repeater of the carrier channel correspondence that carrier switch is opened is set then; Otherwise, then upgrade the frequency that the repeater is set.
6. the system that the carrier frequency of repeater is set is characterized in that, described system comprises:
Detection module is used for detecting the performance number of each carrier wave of the descending input in repeater;
Choose module, be used to choose the carrier channel number that performance number surpasses the carrier wave of the carrier power decision threshold that sets in advance;
Module is set, is used for number being provided with the carrier frequency of repeater correspondence according to the carrier channel chosen.
7. the system that the carrier frequency of repeater is set as claimed in claim 6 is characterized in that, described detection module specifically comprises:
Acquiring unit is used to obtain the descending input signal in repeater;
The medium-frequency transformation unit, the descending input signal that is used for obtaining carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
AD conversion unit is used for the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtains digital signal;
Filter unit, the digital signal that is used for obtaining is carried out filtering through the frequency bandwidth digital zona pectinata bandpass filter identical with the physical channel spacing frequency of repeater, obtains the digital signal of a plurality of separation;
Computing unit is used for adding up respectively by certain time length the digital signal of a plurality of separation of acquisition, calculates the performance number of corresponding each carrier wave.
8. the system that the carrier frequency of repeater is set as claimed in claim 6 is characterized in that, described detection module can also specifically comprise:
Acquiring unit is used to obtain the descending input signal in repeater;
The medium-frequency transformation unit, the descending input signal that is used for obtaining carries out medium-frequency transformation, obtains intermediate-freuqncy signal;
AD conversion unit is used for the intermediate-freuqncy signal that obtains is carried out analog-to-digital conversion, obtains digital signal;
The down-frequency conversion unit is used for the digital signal that obtains is carried out the Digital Down Convert conversion, obtains the baseband signal of zero-frequency;
Fourier transform unit is used for the baseband signal that obtains is carried out Fourier transform, obtains spectrum component;
Statistic unit is used for the spectrum component that will obtain according to frequency or order from high to low from low to high, by the physical channel spacing frequency statistical channel performance number of certain time length and repeater, calculates the performance number of each carrier wave of corresponding descending input.
9. as each described system that the carrier frequency of repeater is set in the claim 6 to 8, it is characterized in that the described module of choosing specifically comprises:
Record cell is used for the performance number of detected carrier wave and the carrier power decision threshold that sets in advance are compared, and record surpasses the carrier channel number of the carrier wave of carrier power decision threshold;
Statistic unit is used to add up the quantity above the carrier channel of the carrier wave of carrier power decision threshold number, is designated as M;
Judging unit is used to judge whether M counts F greater than the maximum frequency-selecting of repeater support;
The value unit, be used for when F is counted in the maximum frequency-selecting that judgment unit judges M supports greater than the repeater, then will arrange from big to small according to power above the carrier wave of carrier power decision threshold, in the carrier wave of arranging, choose F carrier channel number then according to order from big to small, and record variable parameter Mn value is F, when judgment unit judges M was not more than the maximum frequency-selecting of supporting the repeater and counts F, then record variable parameter Mn value was M;
The described module that is provided with specifically comprises:
First judging unit, being used to judge whether is the discriminatory carrier frequency first time;
The unit is set, when being used for described first judgment unit judges and being for the first time the discriminatory carrier frequency, then opens Mn repeater carrier switch, the carrier wave of the repeater of the carrier channel correspondence that carrier switch is opened is set then; When described first judgment unit judges is not for the first time during the discriminatory carrier frequency, then upgrade the frequency that the repeater is set.
10. a repeater is characterized in that, described repeater comprises each described system that the carrier frequency of repeater is set of claim 6 to 8.
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| CN101917361B (en) | 2016-09-07 |
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