KR20180112969A - Apparatus and method for analyzing interference between wireless system - Google Patents

Abstract

According to an embodiment of the present invention, the present invention relates to a method for analyzing interference comprises: a step of determining a threshold of an interference signal transmitted from a second transmitter, which generates an interference effect on a victim signal of a first receiver, to the first receiver, for an interfered link where the victim signal is transmitted from a first transmitter to the first receiver; a step of calculating intensity of the interference signal transmitted from the second transmitter to the first receiver exiting in a frequency band which is the same as or adjacent to a frequency band where the first receiver receives the victim signal from the first transmitter, by using coupling gain and an adjacent band interference ratio; and a step of determining a transmission power capable of being transmitted from the second transmitter to a second receiver receiving the victim signal, by using the calculated intensity of the interference signal and the determined threshold. Therefore, the method and a device can analyze an interference effect between a wireless system and another wireless system which provides services in a frequency band that is the same as or adjacent to that of the wireless systems.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and method for analyzing interference between wireless systems,

The present invention relates to a method and apparatus for analyzing interference between wireless systems, and more particularly, to an interference analyzing method and apparatus for analyzing an interference effect existing between wireless systems.

There are several kinds of systems in the wireless system, and each system is running the service using the allocated frequency band. In the meantime, the wireless system could provide the desired service in the allocated frequency band, but in the future it may be necessary to use a different frequency band to provide more services.

A mobile communication service, which is a type of wireless system, is allocated a frequency band for providing services. However, the allocated frequency band is almost saturated. As a result, there are few frequency bands available to provide a new service. Therefore, there is a need to provide a mobile communication service using another frequency band.

Therefore, when a wireless system such as a mobile communication service provides a service using a different frequency band, analysis of the interference effect is necessary in relation to another wireless system provided in the adjacent frequency band or the same frequency band.

The method used to analyze interference effects between existing wireless systems is MCL (Minimum Coupling Loss) method. The MCL method calculates the minimum distance, that is, the separation distance or the separation frequency, through which the plurality of systems must operate in order to operate without mutual interference, through the system parameters and the propagation model. Since the MCL method assumes the worst case, it calculates a large separation distance and a separation frequency that are inappropriate for practical application.

Therefore, the method and apparatus for analyzing the interference are necessary for accurate analysis of the interference effect in the adjacent frequency band or the same frequency band.

The present invention proposes an interference analysis method and apparatus for analyzing interference effects with other radio systems that provide services in the same frequency band or adjacent frequency band as the radio system.

The present invention proposes an interference analysis method and apparatus for analyzing interference effects between wireless systems by determining a threshold for interference gains of a target interference link and a target gain.

The present invention proposes an interference analysis method and apparatus for analyzing interference effects between wireless systems by calculating the strength of an interference signal of an interference link using the combining gain and the adjacent band interference ratio.

The present invention proposes an interference analysis method and apparatus for analyzing an interference effect between wireless systems by determining an output that can be transmitted by a transmitter using the strength and the threshold of the interference signal.

According to an embodiment of the present invention, there is provided an interference analysis method performed by an interference analyzing apparatus, comprising the steps of: for an interference link in which an interference signal is transmitted from a first transmitter to a first receiver, Determining a threshold for an interfering signal transmitted from a second transmitter to an interfering signal generating interference effect for a first receiver; Wherein the first receiver measures an intensity of an interference signal transmitted from the second transmitter to the first receiver in a frequency band equal to or adjacent to a frequency band in which the interference signal is received from the first transmitter, Calculating using a ratio; And determining a transmission output that can be transmitted from the second transmitter to a second receiver that receives the interfered signal, using the calculated interference signal strength and the determined threshold value.

Wherein the step of calculating the strength for the interfering signal comprises the steps of: determining an identity of the antenna angle of the transmitter, a path loss value between the transmitter and the first receiver of the targeted interfering link, And calculating an intensity of the interference signal by determining a combining gain required to calculate the intensity of the interference signal.

The antenna angle of the transmitter or the identification value of the antenna angle of the receiver may be determined by the azimuth angle in the horizontal plane, the altitude angle in the horizontal plane, the azimuth angle from the tilted main beam, the altitude angle from the tilted main beam, The interference can be calculated by using an interference analysis method.

The path loss value may be an interference analysis method for calculating the interference signal received by the first receiver through the reflection scattering diffraction by the surrounding terrain according to the path loss model or the path loss method.

The adjacent band interference ratio may be an interference analysis method determined by the frequency of the second transmitter and the first receiver, the filter characteristics of the transmitter, and the filter characteristics of the first receiver.

The transmit power that can be transmitted from the second transmitter to the second receiver may be an interference analysis method that is less than a minimum value of the transmit power allowed from the second transmitter in a plurality of interference links.

The permissible transmission power may be an interference analysis method of calculating, using a strength of the interference signal, the adjacent band interference ratio, and the combining gain for the target interference link among a plurality of interference links.

The threshold may be an interference analysis method in which the strength of an interference signal that the first receiver can withstand the interference effect is determined according to the characteristics of the first receiver in the interference link.

Wherein the threshold is selected from the group consisting of: thermal noise of the first receiver in the interfering link; noise figure of the first receiver in the interfering link; interference analysis calculated over a protection ratio protecting the first receiver in the interfering link from other interfering signals; Lt; / RTI >

The determination of the threshold may be a frequency interference analysis method of loading the GIS data including the terrain into a map form and setting the location of the transmitter, the location of the first receiver, and the location of the second receiver.

According to an embodiment of the present invention, an interference analysis method and apparatus can be proposed for analyzing interference effects with other wireless systems providing services in the same frequency band or adjacent frequency bands.

According to one embodiment of the present invention, an interference analysis method and apparatus can be proposed for analyzing the interference effect with a wireless system by determining a threshold of the strength of an interference signal in a targeted interference link through a combining gain .

According to an embodiment of the present invention, an interference analysis method and apparatus are proposed for analyzing interference effects with a wireless system by calculating the strength of an interference signal in an interference link using a combining gain and an adjacent band interference ratio .

According to an embodiment of the present invention, an interference analysis method and apparatus can be proposed for analyzing an interference effect with a wireless system by determining an output that can be transmitted from a transmitter using an intensity and a threshold of an interference signal.

1 is a diagram illustrating an interfering link and an interfering link, in accordance with one embodiment of the present invention.
2 is a diagram illustrating a plurality of interference links subject to interference by a single transmitter, in accordance with an embodiment of the present invention.
3 is a flowchart illustrating an interference analysis method according to an embodiment of the present invention.
4 is a flow chart for determining the strength of an interfering signal in a targeted interfering link, in accordance with an embodiment of the present invention.
5 is a diagram illustrating a flowchart for calculating a combining gain, in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an interfering link and an interfering link, in accordance with one embodiment of the present invention.

Transmitters and receivers present in a wireless system can transmit and receive communication signals over a communication link. 1, a first transmitter 101 transmits a communication signal to a first receiver 102 over a first communication link and a second transmitter 111 transmits a communication signal to a second receiver 112 over a second communication link. As shown in FIG.

The wireless system 110 including the first transmitter 101 and the first receiver 102 and the second transmitter 111 and the second receiver 112 may be different types of wireless System. For example, if the first wireless system 100 provides a service for transmitting and receiving communication signals over the frequency band of mobile communication, the second wireless system 110 transmits and receives communication signals through the frequency bands of the satellite control center Service can be provided.

According to one embodiment of the present invention, when interference occurs due to communication signals of communication links included in different types of wireless systems, interference effects between communication links can be analyzed.

1, when the second transmitter 111 transmits a communication signal via the second communication link to the second receiver 112, the second transmitter 111 causes the first transmitter 111 to transmit the first The receiver 102 may experience interference. In this case, the interference effect can be analyzed.

The first communication link through which the first transmitter 101 and the first receiver 102 transmit and receive communication signals is defined as the interference link 1 120 and the second transmitter 111 and the second receiver 112 The second communication link through which a communication signal is transmitted and received is defined as an interference link 2 (130). When the interference signal output from the first transmitter 101 is transmitted to the second receiver 112 of the second communication link and interference occurs, the communication link between the first transmitter 101 and the second receiver 112 Is defined as interference link 1 (140). In addition, when the interference signal output from the second transmitter 111 is transmitted to the first receiver 102 of the first communication link and interference occurs, the communication link between the second transmitter 111 and the first receiver 102 Is defined as interference link 2 (150).

An interference signal is a communication signal that causes an interference effect to other types of wireless systems. The interfering signal means a communication signal that is interfered with by an interference signal. For example, the first transmitter 101 and the first receiver 102 in the wireless system 100 may transmit and receive the interfering signal via the interfered link 1 120. At this time, the interfered signal can be superimposed on the interference signal transmitted / received through the interference link 2 150 between the first receiver 102 and the second transmitter 111. Thus, an interference effect may occur.

In another example, the second transmitter 111 and the second receiver 112, which are present in the wireless system 110, may transmit and receive the interfering signal via the interfered link 2 130. [ At this time, the interfered signal can be superimposed on the interference signal transmitted / received through the interference link 1 140 between the first transmitter 101 and the second receiver 112. Thus, an interference effect may occur.

2 is a diagram illustrating a plurality of inter-receiver interference links subject to interference by a single transmitter, in accordance with an embodiment of the present invention.

In the present invention, a transmitter that outputs a communication signal may have an interference effect on each of communication links existing in the surroundings. In this case, the communication link that is affected by the transmitter due to the interference is defined as the interference link, and the communication link that gives the interference effect by the transmitter is defined as the interference link. The communication signal transmitted and received via the interfering link may be degraded in quality by the interference effect based on the interfering signal transmitted through the interfering link.

A plurality of receivers that are interfered with by a transmitter can receive interfering signals over an interfering link. The receiver of the interfering link may be subject to interference effects due to the superposition of the received interfering signal and the interfering signal.

In one example, the transmitter of the interfering link is a radar, the first receiver of interfering link 1 is a mobile communication base station, the second receiver of interfering link 2 is a satellite control center, and the Nth receiver of interfering link N uses the frequency band of microwave . The transmitter, the first receiver, the second receiver, and the Nth receiver can transmit and receive an interfering signal through an interfered link, respectively. At this time, the communication signal output from the transmitter overlaps the interfered signal of the first receiver, so that an interference effect can be generated. The communication signal output from the transmitter overlaps the interference signal of the second receiver, and the interference effect can be generated. The communication signal output from the transmitter overlaps the interfered signal of the Nth receiver, thereby generating an interference effect.

The interfering links of the transmitter, the first receiver, the second receiver, and the Nth receiver may use different frequency bands, or may use the same frequency band. At this time, when the frequency bands are different, communication signals can be transmitted and received using adjacent frequency bands. For example, the communication link of the communication signal output from the transmitter may be the same frequency band as the interference link of each of the first receiver, the second receiver, and the Nth receiver. Or the communication link of the communication signal output from the transmitter may be a frequency band adjacent to the interference link of each of the first receiver, the second receiver, and the Nth receiver.

Interference effects can occur between different devices that provide different services. For example, the transmitter is a radar, the first receiver of interfering link 1 is a mobile communication base station, the second receiver of interfering link 2 is a satellite control center, Can occur.

3 is a flowchart illustrating an interference analysis method according to an embodiment of the present invention.

In step 301, the interference analysis device may determine a threshold related to the strength of the interfering signal based on the characteristics of the receiver of the targeted interfering link among the plurality of interfering links subject to the interference effect from the transmitter. At this time, a targeted interference link may be selected from among a plurality of interference links that receive an interference effect from the transmitter of the interference link.

The threshold may mean the intensity with which the receiver of the interfering link can withstand the interference effect due to the interfering signal transmitted over the interfering link. In this case, the strength can be determined according to the characteristics of the receiver of the interference link. Thus, the threshold of each interfering link may vary depending on the type of wireless system. In one example, the threshold of interference link 1 may be determined according to the characteristics of the first receiver. The threshold of interference link 2 may be determined according to the characteristics of the second receiver. The threshold of interference link N may be determined according to the characteristics of the Nth receiver. So the threshold of interference link 1, the threshold of interference link 2, and the threshold of interference link N may be different.

는 수학식 1을 이용하여 계산할 수 있다. The threshold of the targeted interference link (

Can be calculated using Equation (1).

은 타겟된 간섭 링크의 임계치를 나타내고, N은 타겟된 간섭 링크의 수신기에 대한 열 잡음을 나타내고, NF는 타겟된 간섭 링크의 수신기에 대한 잡음지수를 나타낸다.

은 타겟된 간섭 링크의 수신기를 타 간섭 신호로부터 보호하는 보호비를 의미할 수 있다. 이 때, 타 간섭 신호는 간섭 링크의 수신기에 간섭 효과를 미치는 간섭 신호를 의미할 수 있다.

N represents the thermal noise for the receiver of the targeted interfering link and NF represents the noise figure for the receiver of the targeted interfering link.

May mean a protection ratio that protects the receiver of the targeted interference link from other interference signals. In this case, the other interference signal may mean an interference signal that has an interference effect on the receiver of the interference link.

The plurality of interfering links may be interference links between the positioned transmitter and the plurality of receivers. When determining the location, the interference analysis apparatus can load the GIS data including the feature object in a map form. The interference analysis apparatus can determine the position of the transmitter and the plurality of receivers together with the loading. For example, the processor of the interference analyzing apparatus can load the GIS data including the terrain object in a map form, and can determine the location of the radar mobile communication base station, the satellite control center, and the like.

At this time, the transmitter and the receiver may refer to a fixed system in a fixed position. That is, it may mean a system in which the positions of the transmitter and the receiver are fixed. However, the present invention is not limited to a fixed system, and can be applied to a mobile system.

In step 302, the interference analyzer can calculate the strength of the interfering signal delivered over the targeted interfering link using the Adjacent Channel Interference Ratio.

The frequency band of the interfering link and the frequency band of the interfering link may be adjacent frequency bands, or may be the same frequency band. In one example, the frequency band of the interfering link 1 and the frequency band of the interfered link 1 may be adjacent frequency bands, or may be the same frequency band. In addition, the frequency band of the interference link 2 and the frequency band of the interference link 2 may be adjacent frequency bands, or may be the same frequency band. In addition, the frequency band of the interference link N and the frequency band of the interference link N may be adjacent frequency bands, or may be the same frequency band.

If the frequency bands of the interfering link and the interfering link are the same or adjacent, the strength for the interfering signal can be calculated using an Adjacent Channel Interference Ratio.

In step 303, the interference analysis device may determine the transmit power of the transmitter of the interfering link, depending on the strength of the calculated interference signal and the determined threshold. Here, the transmission output may mean a transmission output for a communication signal transmitted / received via the communication link to which the transmitter of the interference link belongs. Here, the communication link to which the transmitter of the interfering link belongs means a communication link other than the communication link to which the receiver of the interfering link belongs. That is, the communication link to which the transmitter of the interfering link belongs is a communication link that sends a pre-established communication signal to the receiver on the transmitter's wireless system.

The transmission output of the predetermined communication signal from the transmitter may be smaller than the maximum value of the transmission output allowed in the receiver of the interference link. And, the transmission output of the transmitter may be smaller than the minimum among a plurality of allowable transmission powers when there are a plurality of receivers of the interference link. In one example, the allowable transmit power of the transmitter may be less than the maximum transmit power that can be tolerated at the first receiver of the interfering link 1. In addition, the allowable transmit power of the transmitter may be less than the maximum transmit power that can be tolerated at the second receiver of the interfering link 2. The permissible transmission power of the transmitter may also be less than the maximum value of the transmission power that can be tolerated at the Nth receiver of the interfering link N. [ At the same time, the permissible transmission output of the transmitter may be smaller than the smaller of the transmission output of the interference link 1 and the transmission output of the interference link 2, i.e., the transmission output of the interference link N. [

The transmit power that can be tolerated at the transmitter can be calculated using Equation (2).

는 간섭 링크1이 송신기로부터 허용 될 수 있는 전송 출력의 최대값을 나타내며,

는 간섭 링크2가 송신기로부터 허용 될 수 있는 전송 출력의 최대값을 나타내며,

는 간섭 링크n이 송신기로부터 허용 될 수 있는 전송 출력의 최대값을 나타낸다. P represents the allowable transmission power at the transmitter,

Represents the maximum value of the transmit power that interference link 1 can tolerate from the transmitter,

Represents the maximum value of the transmit power that the interfering link 2 can tolerate from the transmitter,

Represents the maximum value of the transmit power that interference link n can be allowed from the transmitter.

The permissible transmission output P at the transmitter may be less than or equal to the smallest value (min) of the maximum value of the transmission power that can be tolerated at the interference link n to the maximum value of the transmission power that can be tolerated at the interfering link 1. This is because the transmission output of the transmitter must be transmitted to the extent that the receiver of the interference link can withstand.

은 수학식 3을 이용하여 계산할 수 있다.As mentioned above,

Can be calculated using Equation (3).

는 수학식 1을 통해 계산되는 타겟된 간섭 링크에 있는 간섭 신호에 대한 세기의 임계치를 나타낸다.

은 다중 시스템 마진을 나타낸다. 이 때, 다중 시스템 마진은 간섭 링크의 수신기에서 간섭 효과를 미치는 송신 시스템의 개수를 의미할 수 있다.

은 수학식 4를 이용하여 계산되는 n 시스템과의 인접 대역 간섭비를 나타낸다.

는 n시스템과의 결합이득(coupling gain)을 나타낸다.

≪ / RTI > represents the threshold of the intensity for the interfering signal in the targeted interfering link calculated via Equation (1).

Represents a multiple system margin. At this time, the multiple system margins may refer to the number of transmission systems that have interference effects at the receiver of the interfering link.

Represents the adjacent band interference ratio with the n system calculated using Equation (4).

Represents the coupling gain with the n system.

4 is a flow chart for determining the strength of an interfering signal in a targeted interfering link, in accordance with an embodiment of the present invention.

In step 401, the coupling gain may be calculated through an identification value for the antenna angle of the transmitter, a path loss value, and an identification value for the antenna angle of the receiver. The interference analyzing device can predict the intensity of the interference signal of the interference link through the coupling gain.

In one example, the interference analyzing apparatus may be configured to measure a path loss value of the interference link 1, an identification value for the antenna angle of the radar which is the transmitter, an identification value for the antenna angle of the first receiver, The combining gain can be calculated through the identification value for the antenna angle of the Nth receiver. Then, the processor of the interference analyzing apparatus can predict the strength of the interference signal of the interference link 1 through the combining gain, through Equation (3).

 In step 402, the interference analyzing device may calculate the adjacent band interference ratio.

The Adjacent Channel Interference Ratio can be calculated using Equation (4). That is, by using the adjacent band interference ratio and the intensity of the interference signal, the intensity of the interference signal in the adjacent band can be calculated. Therefore, the intensity of the interference signal in the adjacent band through the adjacent band interference ratio can be calculated.

S (f) represents the transmittable power spectral density (Watts / KHz) of the transmitter, and R (f) represents the receive selectivity at the receiver of the targeted interference link. At this time, the reception selectivity may mean the filter performance of the receiver.

In the case of a receiver having a superheterodyne structure, R (f) can be calculated by Equation (5). The superheterodyne receiver may refer to a receiver that performs selective amplification detection by converting the frequency of a received signal to an intermediate frequency lower than the frequency of the received signal

는 수신기의 수신 선택도 기울기를 나타내며,

는 대역폭(bandwith)를 나타내며,

는

를 나타낸다.

Represents the receive selectivity gradient of the receiver,

Represents a bandwidth,

The

.

5 is a flowchart showing a calculation of a coupling gain according to an embodiment of the present invention.

The coupling gain can be used to calculate the intensity for the interfering signal of the targeted interfering link. The combining gain can be determined through an identification value for the antenna angle of the transmitter, a path loss value, a cable loss of the receiver, and an identification value for the antenna angle of the receiver. At this time, the cable loss may mean a loss occurring in transmitting a signal by the cable. That is, the size of the signal after passing through the cable can be reduced by a loss.

The combining gain can be calculated using Equation (6).

는 송신기의 안테나 각도에 대한 식별값을 나타내며,

는 수신기의 안테나 각도에 대한 식별값을 나타내며,

는 경로 손실 값을 나타내며,

는 수신기의 케이블 손실을 나타낸다.

Represents an identification value with respect to the antenna angle of the transmitter,

Represents an identification value for the antenna angle of the receiver,

Represents the path loss value,

Represents the cable loss of the receiver.

는 송신기에서 전송되는 통신 신호가 주변 지형 지물에 따라 반사/산란/회절등에 의하여 간섭 링크의 수신기에서 수신되는 통신 신호로서, 다양한 경로 손실 모델이나 방법을 통해 계산될 수 있다. Path loss value

Can be computed through various path loss models or methods as communication signals received at the receiver of the interfering link, such as by reflection / scattering / diffraction, depending on the surrounding topography.

또는, 수신기의 안테나 각도에 대한 식별값

를 수학식 7 식에 따라 계산할 수 있다.The interference analyzing device calculates the identification value of the antenna angle of the transmitter

Alternatively, the identification value of the antenna angle of the receiver

Can be calculated according to the equation (7).

는 수평면에서의 방위각,

는 수평면에서의 고도각,

는 틸트(tilt)된 메인 빔으로부터의 방위각,

는 틸트(tilt)된 메인 빔으로부터의 고도각,

는 틸트각을 나타낸다. 이 때, 메인빔은 안테나에서 가장 큰 이득으로 내보내는 빔을 의미할 수 있다.

The azimuth angle in the horizontal plane,

The elevation angle in the horizontal plane,

An azimuth angle from a tilted main beam,

An elevation angle from the tilted main beam,

Represents a tilt angle. At this time, the main beam may mean a beam that is emitted from the antenna with the greatest gain.

는 자유공간 손실 모델과 같은 위의 여러 유형 모델을 이용하여 계산될 수 있다. The path loss model can be used to account for the loss of a communication signal that varies during the propagation of the interfering signal of the interfering link. There are many types of path loss models such as free space loss (FSL) model, diffraction loss model, and Hata model. Thus, the path loss value

Can be computed using several type models above, such as the free space loss model.

를 자유공간 손실 모델이나 회절 손실 모델, Hata 모델을 이용하여 계산할 수 있다. In one example, the interference analyzing device measures the path loss value between the radar which is the transmitter of the interference link 1 and the first receiver

Can be calculated using the free space loss model, the diffraction loss model, and the Hata model.

Meanwhile, the method according to the present invention may be embodied as a program that can be executed by a computer, and may be embodied as various recording media such as a magnetic storage medium, an optical reading medium, and a digital storage medium.

Implementations of the various techniques described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or combinations thereof. Implementations may be implemented in a computer program product, such as an information carrier, e.g., a machine readable storage device, such as a computer readable storage medium, for example, for processing by a data processing apparatus, Apparatus (computer readable medium) or as a computer program tangibly embodied in a propagation signal. A computer program, such as the computer program (s) described above, may be written in any form of programming language, including compiled or interpreted languages, and may be stored as a stand-alone program or in a module, component, subroutine, As other units suitable for use in the present invention. A computer program may be deployed to be processed on one computer or multiple computers at one site or distributed across multiple sites and interconnected by a communications network.

Processors suitable for processing a computer program include, by way of example, both general purpose and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from a read-only memory or a random access memory or both. The elements of a computer may include at least one processor for executing instructions and one or more memory devices for storing instructions and data. Generally, a computer may include one or more mass storage devices for storing data, such as magnetic, magneto-optical disks, or optical disks, or may receive data from them, transmit data to them, . ≪ / RTI > Information carriers suitable for embodying computer program instructions and data include, for example, semiconductor memory devices, for example, magnetic media such as hard disks, floppy disks and magnetic tape, compact disk read only memory A magneto-optical medium such as a floppy disk, an optical disk such as a DVD (Digital Video Disk), a ROM (Read Only Memory), a RAM , Random Access Memory), a flash memory, an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and the like. The processor and memory may be supplemented or included by special purpose logic circuitry.

In addition, the computer-readable medium can be any available media that can be accessed by a computer, and can include both computer storage media and transmission media.

While the specification contains a number of specific implementation details, it should be understood that they are not to be construed as limitations on the scope of any invention or claim, but rather on the description of features that may be specific to a particular embodiment of a particular invention Should be understood. Certain features described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented in multiple embodiments, either individually or in any suitable subcombination. Further, although the features may operate in a particular combination and may be initially described as so claimed, one or more features from the claimed combination may in some cases be excluded from the combination, Or a variant of a subcombination.

Likewise, although the operations are depicted in the drawings in a particular order, it should be understood that such operations must be performed in that particular order or sequential order shown to achieve the desired result, or that all illustrated operations should be performed. In certain cases, multitasking and parallel processing may be advantageous. Also, the separation of the various device components of the above-described embodiments should not be understood as requiring such separation in all embodiments, and the described program components and devices will generally be integrated together into a single software product or packaged into multiple software products It should be understood.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of specific examples for the purpose of understanding and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

100,110: Different wireless systems
120, 130: interference link 1, interference link 2
140, 150: interference link 1, interference link 2
101, 102: first transmitter, first receiver
111, 112: a second transmitter, a second receiver

Claims (1)

An interference analysis method performed by an interference analysis apparatus,
For a to-be-interfered link in which an interfering signal is transmitted from a first transmitter to a first receiver, a threshold value of an interference signal transmitted from a second transmitter to the first receiver, which generates an interference effect on the interfered signal of the first receiver, Determining;
Wherein the first receiver measures an intensity of an interference signal transmitted from the second transmitter to the first receiver existing in a frequency band equal to or adjacent to a frequency band in which the interference signal is received from the first transmitter, ;
Determining a transmit power that can be transmitted from the second transmitter to a second receiver that receives the interfered signal using the calculated interference signal strength and the determined threshold;
/ RTI >

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