KR101530892B1 - Repeating system and method for auto adjusting bandwidth by data traffic - Google Patents

Abstract

The present invention relates to a method and a system for repeating an auto adjustment of bandwidth by data traffic, capable of reducing the size and the power consumption of an RF repeater by measuring traffic of downlink signals coming from a motherland, by selecting and switching a bandwidth. To achieve this, the present invention comprises: a filter unit classifying signals inputted through an antenna by bandwidths; a downlink traffic measuring unit measuring traffic of the signals classified by bandwidths; a first bandwidth selecting unit selecting and switching the signals according to the size of the traffic measured by the downlink traffic measuring unit; an amplifying unit amplifying the signals of the selected bandwidth and changing the signals into a preferred frequency signals; and a second bandwidth selecting unit switching the signals outputted by the amplifying unit with a filter unit of a bandwidth which will be served, selectively.

Description

TECHNICAL FIELD [0001] The present invention relates to an automatic band adjusting relaying system and a method thereof,

More particularly, the present invention relates to an automatic band adjustment relaying system based on data traffic, and more particularly, to a system and method for automatically adjusting a frequency band in which an RF repeater, The present invention relates to an automatic band adjustment relaying system and method for providing data to a user, which can efficiently improve a service quality and an apparatus size and a power consumption.

The RF repeater amplifies the downlink signal from the base station (BS) and serves the mobile station in the shadow area, amplifies the uplink signal from the mobile station (MS), and transmits the amplified signal to the home station. If the signal to be served in the home country is LTE, WCDMA, CDMA, etc., the repeater should be designed accordingly, and if the multi-band and multi-frequency services are provided, the repeater should also provide multi-band and multi-frequency services.

FIG. 1 is an exemplary view showing a general repeater configuration, and FIG. 2 is an exemplary view showing a general repeater configuration.

Currently, one carrier such as CDMA, WCMA, WiBro, and LTE has N various multi-service signals. One LTE signal also has various frequencies, and the service provider provides various services and various frequencies.

In such a mobile communication environment, a repeater simultaneously provides various multi-services and multi-frequency services.

The LTE frequency band has frequencies ranging from 700 MHz to 3.5 GHz. The home country distributes the users efficiently by using the multi-functional LTE frequency.

Regarding the traffic monitoring of the repeater, there are a lot of publicly disclosed and registered in addition to the Korean Patent Laid-Open No. 10-2005-0024135 (hereinafter referred to as 'precedent document').

The duplexer includes a duplexer for outputting a forward link signal received through a first antenna to a coupler, a low noise amplifier for outputting a signal from the duplexer, A low noise amplifier for amplifying and outputting a signal from the coupler while suppressing noise; a filter for band-filtering and outputting a signal from the low noise amplifier; and a power amplifier for amplifying a signal from the filter A duplexer for transmitting a signal from the power amplifier through a first antenna and a control signal for adjusting an output gain of the power amplifier when measuring a traffic of the repeater, The power measurements of the previously measured walsh code channels and the Comparing the power measurements of the walsh code channels measured after the adjustment and determining the number of Walsh code channels whose power change is greater than or equal to a predetermined threshold as the number of calls serviced at the repeater .

However, existing repeaters, including the prior art, can not accommodate all of the various frequencies and are configured as shown in FIG.

Therefore, there is a problem in that it is necessary to install a repeater having a high power consumption and a large size.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in order to solve the problems of the conventional high power consumption and large size, and it is an object of the present invention to provide an RF repeater which selects a band by measuring traffic of a downlink signal from a home station, And an automatic band adjustment relaying system based on data traffic that can be reduced.

According to an aspect of the present invention, there is provided an automatic band adjustment relay system using data traffic, comprising: a filter unit for dividing a signal input through an antenna into a plurality of bands; A downlink traffic measurement unit measuring traffic of a signal classified by a band; A first band selection unit for selecting and switching a signal according to the size of the traffic measured through the downlink traffic measurement unit; An amplifier for amplifying a signal of a selected band and varying a desired frequency signal; And a second band selection unit for selectively switching the signal output through the amplification unit to a filter unit of a signal band to be served; .

In addition, the downlink traffic measurement unit measures variations in traffic for each band classified by the filter unit, and determines the degree of user traffic for each band.

In addition, the first band selection unit selects and switches a signal of a band having the smallest user traffic among the band-by-band signals measured through the downlink traffic measurement unit.

The amplification unit amplifies the signal input from the BS to be transmitted to the MS and amplifies the signal input from the MS to be transmitted to the BS. And a frequency variable module for varying a signal input from a base station (BS) and a mobile station (MS) to a frequency signal desired by a user through the gain amplification module; And a control unit.

According to another aspect of the present invention, there is provided an automatic band adjustment relay method using data traffic, comprising the steps of: (a) (b) measuring traffic of a signal classified by a downlink traffic measurement subband; (c) selecting and switching a signal according to the size of the measured traffic; (d) amplifying a signal of a selected band by the amplifying unit and varying the signal to a desired frequency signal; And (e) selectively switching a signal output from the second band selection unit to a filter unit of a signal band to be served; .

The step (b) includes the steps of: (b-1) measuring the amount of change in the traffic for each band classified by the step (a) by the downlink traffic measurement unit; And (b-2) the downlink traffic measurement unit determining the degree of user traffic for each band; And a control unit.

In addition, in the step (c), the first band selection unit selects a signal having the smallest user traffic among the band-specific signals measured through the process (b).

The step (d) further includes the steps of: (d-1) amplifying the signal input from the BS to be transmitted to the MS; And (d-2) varying the input signal to a frequency signal desired by the user; And a control unit.

And (f) dividing a signal input through the antenna into a plurality of bands; (g) selecting and switching a signal classified by each band of the second band selector; (h) amplifying a signal of the selected band by the amplifying unit and varying the signal to a desired frequency signal; And (i) selectively switching the signal output from the first band selection unit to a filter unit of a signal band to be served; And a control unit.

Conventional multiband RF service repeaters have amplifiers at each band, high power consumption, large repeater size, and high cost.

However, according to the present invention, the traffic measurement and the bandwidth can be selectively changed, thereby reducing the consumed power of the repeater and reducing the cost.

1 is an example showing a general repeater configuration.
FIG. 2 is a diagram showing an example of a moon diagram of a general repeater; FIG.
3 shows an example of a repeater serving a multi-band.
4 is a block diagram of an automatic band adjustment relay system based on data traffic applied to an RF repeater according to the present invention;
FIG. 5 is a diagram illustrating an example in which traffic is measured according to the present invention. FIG.
FIG. 6 is an overall flowchart of an automatic band adjustment relay method based on data traffic according to the present invention. FIG.

Specific features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. It is to be noted that the detailed description of known functions and constructions related to the present invention is omitted when it is determined that the gist of the present invention may be unnecessarily blurred.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

The automatic band adjustment relay system based on data traffic according to the present invention and the method thereof will be described with reference to FIG. 4 to FIG.

FIG. 4 is a block diagram of an automatic band adjustment relay system S based on data traffic applied to an RF repeater according to the present invention. As shown in FIG. 4, the filter unit 100, the downlink traffic measurement unit 200, 1 band selection unit 300, an amplification unit 400, and a second band selection unit 500.

The filter unit 100 divides a signal input through the antenna 10 into specific bands.

That is, the filter unit 100 divides the signal input from the base station (BS) into signals of the first to n-th bands. At this time, the frequency band from 700 MHz to 3.5 GHz or more is divided into several tens of MHz or more.

The downlink traffic measurement unit 200 measures the traffic of the signals classified by the band.

Specifically, the downlink traffic measurement unit 200 measures the amount of change according to the traffic for each band identified through the filter unit 100, and determines the degree of user traffic for each band.

At this time, the downlink traffic measurement unit 200 simultaneously uses the Peak Hold scheme and the Root Mean Square (RMS) detection scheme, which are measurement methods using the peak value in the measurement interval as the measurement value of the interval, And determines the degree of user traffic.

That is, FIG. 5 shows an example in which traffic is measured, and FIG. 5 (a) shows a case where traffic is small, and FIG. 5 (b) shows a case when traffic is large.

As shown in the figure, the difference between the peak level and the average level when the traffic is small is larger than the difference between the peak level and the average level when there are many traffic.

Meanwhile, as shown in FIG. 4, the uplink signal input from the mobile station MS may not pass through the downlink traffic measurement unit 200.

The first band selection unit 300 selects and switches a signal according to the size of traffic measured through the downlink traffic measurement unit 200.

Specifically, the first band selection unit 300 selects and switches a signal of a band having the smallest user traffic among the band-by-band signals measured through the downlink traffic measurement unit 200.

The amplification unit 400 amplifies the signal of the selected band through the first band selection unit 300 and the second band selection unit 500 and performs a function of varying the frequency signal to a desired frequency by the user. A gain amplification module 410 and a frequency variable module 420, as shown in FIG.

Specifically, the gain amplification module 410 amplifies the signal input from the base station (BS) to be transmitted to the mobile station (MS), and amplifies the signal input from the mobile station (MS) to be transmitted to the base station (BS).

The frequency variable module 420 varies the signal input from the base station (BS) and the mobile station (MS) to a frequency signal desired by the user through the gain amplification module 410.

At this time, the frequency variable module 420 can vary from a frequency lower than 700 MHz to a frequency higher than 3.5 GHz. In addition, down-conversion of input frequency signals of 700 MHz or higher to a frequency lower than a frequency of 200 MHz, and reverse conversion is performed.

The second band selection unit 500 selectively switches the signal output through the amplification unit 400 to a filter unit 100 'of a signal band to be served.

Hereinafter, an automatic band adjustment relay method based on data traffic using the above-described system will be described with reference to FIG.

FIG. 6 is an overall flowchart of an automatic band adjustment relay method based on data traffic according to the present invention. As shown in FIG. 6, a filter unit 100 filters a signal input from a base station (BS) And the signal is divided into n-th band signals (S10).

In addition, the downlink traffic measurement unit 200 measures the amount of change according to the traffic for each band classified by the filter unit (S20), and determines the degree of user traffic for each band (S30).

In operation S40, the first band selector 300 selects a signal having the smallest user traffic among the band-specific signals measured through the downlink traffic measurement unit 200, and switches the signal.

The gain amplification module 410 of the amplification unit 400 amplifies the signal of the selected band through the first band selection unit 300 at step S50. The frequency variation module 420 amplifies the amplified signal And changes to a frequency signal (S60).

The second band selection unit 500 selectively switches the signal output from the amplification unit 400 to a filter unit 100 'of a signal band to be served (S70).

The above-mentioned flow describes a signal flow in which a downlink signal transmitted from a base station (BS), that is, a signal transmitted from a base station, is amplified and served to a mobile station (MS). Conversely, It is apparent that the flow of amplifying the uplink signal and transmitting it to the base station (BS) can be easily explained.

That is, the filter unit 100 'separates the signals inputted through the antenna by the band, and the second band selector 500 selects and switches the signals classified by the band. Thereafter, the gain amplification module 410 of the amplification unit 400 amplifies the signal of the selected band, the frequency variable module 420 changes the signal to a desired frequency signal, and the first band selection unit 300 selects the output signal And selectively switches to the filter unit 100 of the signal band to be serviced.

As described above, according to the present invention, an automatic band adjustment relay system based on data traffic and a method thereof can be applied to an RF repeater that performs service in various frequency bands in a frequency band To the user to efficiently improve the size and power consumption of the equipment as well as the service quality.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be appreciated by those skilled in the art that numerous changes and modifications may be made without departing from the invention. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

100, 100 ': filter unit 200: traffic measurement unit
300: first band selection unit 400: amplification unit
500: second band selection unit 410: gain amplification module
420: Frequency variable module

Claims (9)

A filter unit 100 for dividing a signal input through an antenna into a plurality of bands;
And measuring the amount of change in the traffic of each of the bands classified by the bands by the peak hold method and the effective value detection method, A downlink traffic measurement unit 200 for determining the degree of user traffic for each band;
And selecting and switching a signal according to the size of the traffic measured through the downlink traffic measurement unit 200. The first band for selecting and switching a signal having the smallest user traffic among the band- A selection unit 300;
An amplification unit 400 capable of amplifying a signal of a selected band and varying the signal of the selected band to a desired frequency signal, wherein the amplification unit 400 can downconvert or upconvert; And
A second band selection unit 500 for selectively switching a signal output from the amplification unit 400 to a filter unit 100 'of a signal band to be served; Wherein the automatic bandwidth adjustment relay system comprises:
delete delete The method according to claim 1,
The amplification unit 400 amplifies the input signal,
A gain amplification module 410 that amplifies a signal input from a base station (BS) to be transmitted to a mobile station (MS) and amplifies a signal input from the mobile station (MS) to be transmitted to a base station (BS); And
A frequency variable module 420 for varying a signal input from a base station (BS) and a mobile station (MS) to a frequency signal desired by a user through the gain amplification module 410; And an automatic band adjustment relay system based on data traffic.
(a) dividing a signal input through the antenna into a plurality of bands by the filter unit 100;
(b) the downlink traffic measurement unit 200 measures the traffic of the signals classified by the bands and the change amount thereof by the peak hold method and the effective value detection method, Determining a degree of user traffic for each band by measuring a change amount according to traffic for the signal;
(c) selecting and switching a signal in a band having the smallest user traffic among the band-by-band signals, wherein the first band selection unit 300 selects and switches a signal according to the measured traffic size;
(d) amplifying the signal of the selected band by the amplifying unit 400 and varying the signal of the selected band to a desired frequency signal, downconverting or upconverting the signal; And
(e) selectively switching the signal output from the second band selection unit 500 to the filter unit 100 'of the signal band to be served; The method comprising the steps of:
delete delete 6. The method of claim 5,
The step (d)
(d-1) amplifying the signal input from the BS to be transmitted to the mobile station MS by the amplification unit 400; And
(d-2) varying the input signal of the amplification unit 400 into a frequency signal desired by the user; Wherein the automatic bandwidth adjustment relay method comprises:
6. The method of claim 5,
(f) dividing the signal input through the antenna by the filter unit 100 'by band;
(g) selecting and switching a signal classified by bands by the second band selector (500);
(h) amplifying the signal of the selected band by the amplifier 400 and varying the signal to a desired frequency signal; And
(i) selectively switching the signal output from the first band selection unit (300) with the filter unit (100) of a signal band to be served; Wherein the automatic bandwidth adjustment relay method comprises:

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