KR101338408B1 - Method and equipment for inter channel interference decrease using reminder channel - Google Patents

Abstract

In the method for reducing inter-channel interference using the redundant channel of the present invention, determining whether an ICI (Inter Channel Interference) occurs, when the ICI occurs according to the determination, a predetermined surplus channel allocation request signal to a predetermined base station Transmitting, receiving redundant channel information allocated by the base station, switching to the allocated redundant channel according to the redundant channel information, and communicating with the base station through the redundant channel.

According to the present invention, when an inter-channel interference occurs, the frequency utilization rate can be increased by using an excess channel.

Redundant Channel, Shared Channel, Open Channel, ICI

Description

A method and apparatus for reducing interchannel interference using redundant channels. {METHOD AND EQUIPMENT FOR INTER CHANNEL INTERFERENCE DECREASE USING REMINDER CHANNEL}

The present invention relates to a method and apparatus for reducing inter-channel interference using redundant channels, and more particularly, when a communication state is not good due to inter-channel interference (ICI) during communication, the redundant channel instead of the currently used channel. A method and apparatus for reducing inter-channel interference using redundant channels that can overcome the inter-channel interference by using shared or open channels.

In a mobile communication system, a limited frequency resource is used in every cell or sector, and inter-channel interference (ICI) occurs between adjacent cells.

In order to solve this problem, the IEEE 802.20 and WiMax camps use the Fractional Frequency Reuse (FFR) technique to solve the channel interference problem at the edge of the cell.

The FFR technique reduces the channel interference problem by dividing the total available bandwidth into several sub-channels, which are sets of sub-carriers, and then distributing sub-channels at the center and edge of the cell. Since the limited licensed frequency band is effectively used in the network, only allocated channels can be used.

In addition, the IEEE 802.20 has a fixed SUB-CHANNEL allocation of all cells, the additional interference of the edge SUB-CHANNEL increases when the frequency division of only one cell is changed, for the same reason, the overall cell frequency planning This has the necessary disadvantages.

In addition, in the case of WiMax in the mobile communication system, the channel state of the cell edge terminal is worse than the IEEE 802.20, and there is a disadvantage in that the overall cell frequency planning is required to adjust the SUB-CHANNEL allocation ratio.

The present invention has been made to solve the above-described problems of the prior art, the purpose of which is to increase the frequency utilization rate by using a redundant channel when inter-channel interference occurs.

In addition, an object of the present invention is to use a redundant channel using the Beamforming communication method when the interference between the channels is severe.

Another object of the present invention is to provide a method for increasing the capacity of a communication cell.

In order to achieve the above object and to solve the above-mentioned problems of the prior art, a method for reducing inter-channel interference using the redundant channel according to an embodiment of the present invention, the step of determining whether ICI (Inter Channel Interference) occurs When the ICI occurs according to the determination, transmitting a predetermined surplus channel allocation request signal to a predetermined base station, receiving surplus channel information allocated by the base station, and assigning the surplus according to the surplus channel information. Switching to a channel and communicating with the base station via the redundant channel.

An apparatus for reducing inter-channel interference using a surplus channel according to an embodiment of the present invention is a channel state control unit for determining whether ICI (Inter Channel Interference) occurs, and when the ICI occurs according to the determination, the predetermined base station A channel allocation request signal transmission unit for transmitting a surplus channel allocation request signal, a channel information receiving unit for receiving surplus channel information allocated by the base station, a channel switching control unit for switching to the allocated surplus channel according to the surplus channel information; And a communication unit controlling to communicate with the base station through the redundant channel.

According to another aspect of the present invention, there is provided a method for reducing inter-channel interference using a surplus channel, periodically receiving channel quality indicator (CQI) information from a mobile station, allocating a predetermined surplus channel from the mobile station. Receiving a request signal, sensing a predetermined surplus channel for the channel allocation request signal using a predetermined channel sensing unit, transmitting surplus channel information for the sensed surplus channel to the mobile station, and the surplus Communicating with the mobile station via a channel.

According to another embodiment of the present invention, an apparatus for reducing inter-channel interference using a surplus channel includes a CQI information receiving unit periodically receiving CQI information from a predetermined mobile station, and a predetermined surplus from the mobile station. A channel allocation request signal receiving unit receiving a channel allocation request signal, a channel sensing unit sensing a predetermined surplus channel for the channel allocation request signal, and channel information transmitting the surplus channel information for the sensed surplus channel to the mobile station And a communication unit for communicating with the mobile station via the redundant channel.

According to the present invention, when an inter-channel interference occurs, by using an excess channel, the frequency utilization rate can be increased.

In addition, according to the present invention, when the interference between the channels is severe, the redundant channel may be used using a beamforming communication method.

In addition, the present invention can provide a method for increasing the capacity of a communication cell.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and accompanying drawings, but the present invention is not limited to or limited by the embodiments.

1 is a block diagram illustrating a configuration of an apparatus for reducing interchannel interference using a surplus channel according to an embodiment of the present invention.

The configuration of the apparatus 100 for reducing inter-channel interference using the surplus channel according to the present invention will be described sequentially according to the method for reducing the inter-channel interference using the surplus channel.

First, the CQI information transmitter 110 periodically transmits CQI (Channel Quality Indicator) information to a predetermined base station.

In this case, the specific data of the CQI information includes a Signal-to-Interference-and Noise Ratio (SINR) and a Radio Signal Strength Indicator (RSSI), which may be data that can compare the degree of interference between channels.

Next, the channel state controller 120 analyzes specific data of the CQI information to determine whether ICI (Inter Channel Interference) occurs.

In this case, the channel state controller 120 determines that the inter-channel interference (ICI) has occurred when the SINR is higher or lower than a predetermined reference value according to a predetermined criterion.

For example, when the SINR is lower than a predetermined reference value, the channel state controller 120 determines that the inter-channel interference (ICI) has occurred, and requests the channel allocation request signal transmitter 130 for the redundant channel to the base station. It controls to transmit the signal.

Next, when the ICI occurs according to the determination, the channel allocation request signal transmission unit 130 transmits a predetermined surplus channel allocation request signal to the base station.

As described above, when the surplus channel allocation request signal is received, the base station senses and extracts a surplus channel in real time using a separately configured channel sensing unit of the base station to reduce channel interference as a mobile station. Transmit to (100) side.

In addition, the base station periodically senses the redundant channel and stores it in a predetermined database, and transmits the stored redundant channel information to the mobile station at the request of the mobile station.

In this case, the redundant channel may be a channel such as a shared channel, an open channel or an additional license band, and the shared channel may be a secondary user when the cumulative user terminal is not used. The channel refers to a channel through which the terminal can be given the right to use a channel, and the open channel refers to an unlicensed channel that is not allocated to a predetermined communication system.

For example, the shared channel among the surplus channels may be an ultrahigh frequency (UHF) TV channel, and the open channel may be an industrial scientific medical (ISM) channel.

In addition, the base station may transmit the allocated surplus channel information to the mobile station using a technique such as beamforming to allocate the surplus channel.

Next, the channel information receiver 140 receives redundant channel information allocated by the base station from the base station.

Next, the channel switching controller 150 switches to the allocated redundant channel according to the redundant channel information.

Finally, the communication unit 160 controls to communicate with the base station through the redundant channel.

As described above, the apparatus 100 for reducing inter-channel interference using the surplus channel of the present invention, when an inter-channel interference (ICI) occurs, by requesting the surplus channel to the base station to receive an arbitrary surplus channel, the corresponding surplus By communicating over a channel, communication obstacles due to interchannel interference can be overcome.

In addition, the apparatus 100 for reducing inter-channel interference according to the present invention may communicate again through the existing cellular channel when the communication ICI with the base station is removed while maintaining communication through the redundant channel. This is done by the following process.

First, the apparatus 100 for reducing inter-channel interference according to the present invention transmits a predetermined first cellular channel allocation request signal to the base station when the ICI is removed during communication with the base station through the redundant channel. do.

In this case, the base station senses the first cellular channel using the channel sensing unit according to the first cellular channel allocation request signal, and transmits the first cellular channel to the mobile station, which is an apparatus 100 for reducing inter-channel interference.

Next, the mobile station receives first cellular channel information assigned by the base station.

Next, when the mobile station receives the first cellular channel information, the mobile station transmits a response signal for switching to the first cellular channel to the base station, and transmits the response signal to the allocated first cellular channel according to the first cellular channel information. Switch.

Finally, the mobile station communicates with the base station via the first cellular channel.

In addition, in the apparatus 100 for reducing inter-channel interference using the surplus channel of the present invention, the apparatus 100 for reducing inter-channel interference, which is the mobile station, is a secondary user when the surplus channel used is a shared channel. In the case where the shared channel is used through Opportunity Access to avoid the use of the frequency of the incumbent user, the surplus user may use another surplus channel if the incumbent user appears.

In this case, the present invention determines that the incumbent user terminal uses the surplus channel when communication is not performed in the surplus channel for a predetermined threshold, or the incumbent user terminal at predetermined intervals. If it is determined whether the surplus channel is used by checking whether the surplus channel is used, the incumbent user terminal determines that the surplus channel is used. .

As described above, the apparatus 100 for reducing inter-channel interference using the surplus channel according to the present invention is different when the incumbent user who uses the shared channel appears while using the shared channel. It may also be controlled to use a redundant channel.

First, the apparatus 100 for reducing inter-channel interference using the surplus channel of the present invention determines whether a predetermined incumbent user terminal uses the surplus channel.

Next, in the present invention, when the cumulative user terminal uses the surplus channel, the use of the surplus channel is stopped, and the channel is switched to a predetermined second cellular channel.

Next, the present invention determines whether ICI exists in the second cellular channel.

In this case, when the ICI exists in the second cellular channel according to the determination, the present invention transmits a signal indicating whether ICI exists to the base station and requests another redundant channel.

Next, the present invention receives a response signal for the other redundant channel request from the base station.

Next, the present invention receives a signal from the base station requesting to switch to the other redundant channel.

In this case, the present invention switches to the other redundant channel according to a signal requesting to switch to the other redundant channel received from the base station.

Finally, the present invention communicates with the base station via the other redundant channel.

As described above, the present invention may allocate the sensed surplus channel to the apparatus 100 for reducing the inter-channel interference by sensing the surplus channel which is the mobile station in the base station, and as follows, a channel sensing unit configured in the mobile station ( Another redundant channel may be sensed using 170), and the corresponding redundant channel may be used after notifying the base station of the sensed redundant channel.

First, the apparatus 100 for reducing inter-channel interference using the surplus channel of the present invention senses the other surplus channel by using the channel sensing unit 170.

Next, the present invention transmits a signal indicating whether the other redundant channel sensed by the channel sensing unit 170 to the base station.

Next, the present invention receives a signal from the base station requesting to switch to the other redundant channel.

Next, the present invention switches to the other redundant channel according to a signal requesting to switch to the other redundant channel received from the base station.

Finally, the present invention communicates with the base station via the other redundant channel.

In addition, the apparatus 100 for reducing inter-channel interference using the redundant channel of the present invention maintains the channel by avoiding this when the incumbent user uses the shared channel when the shared channel is used. In this case, unlike the foregoing case, when the inter-channel interference is resolved after switching to the second cellular channel and determining whether the inter-channel interference has occurred, the present invention maintains the second cellular channel. As follows.

First, when the ICI does not exist in the second cellular channel, the apparatus 100 for reducing inter-channel interference using the redundant channel transmits a signal indicating whether to cancel ICI to the base station.

Next, the present invention receives the second cellular channel maintenance request signal from the base station, and transmits a response signal to the second cellular channel maintenance request signal to the base station.

Finally, the present invention communicates with the base station via the second cellular channel.

2 is a flowchart illustrating a method of reducing inter-channel interference using redundant channels according to an embodiment of the present invention.

If the method for reducing the inter-channel interference using the redundant channel according to the present invention can be performed using the apparatus 100 for reducing the inter-channel interference using the redundant channel, the method will be described sequentially as follows. .

First, the CQI information transmitter 110 periodically transmits channel quality indicator (CQI) information to a predetermined base station (S210).

In this case, the specific data of the CQI information includes a Signal-to-Interference-and Noise Ratio (SINR) and a Radio Signal Strength Indicator (RSSI), which may be data that can compare the degree of interference between channels.

Next, the channel state controller 120 analyzes specific data of the CQI information to determine whether ICI (Inter Channel Interference) occurs (S220).

In this step S220, the channel state controller 120 determines that the inter-channel interference (ICI) has occurred when the SINR is higher or lower than a predetermined reference value according to a predetermined criterion.

For example, when the SINR is lower than a predetermined reference value, the channel state controller 120 determines that the inter-channel interference (ICI) has occurred, and requests the channel allocation request signal transmitter 130 for the redundant channel to the base station. It controls to transmit the signal.

Next, when the ICI is generated according to the determination, the channel allocation request signal transmitter 130 transmits a predetermined surplus channel allocation request signal to the base station (S230).

In this case, when the surplus channel allocation request signal is received, the base station senses the surplus channel in real time using a channel sensing unit configured separately (S240).

The extracted redundant channel is transmitted from the base station to the device 100 for reducing channel interference which is the mobile station.

In addition, the base station periodically senses the redundant channel and stores it in a predetermined database, and transmits the stored redundant channel information to the mobile station at the request of the mobile station.

In this case, the redundant channel may be a channel such as a shared channel, an open channel or an additional license band, and the shared channel may be a secondary user when the cumulative user terminal is not used. The channel refers to a channel through which the terminal can be given the right to use a channel, and the open channel refers to an unlicensed channel that is not allocated to a predetermined communication system.

For example, the shared channel among the surplus channels may be an ultrahigh frequency (UHF) TV channel, and the open channel may be an industrial scientific medical (ISM) channel.

In addition, the base station may transmit the allocated surplus channel information to the mobile station using a technique such as beamforming to allocate the surplus channel.

Next, the channel information receiver 140 receives the redundant channel information allocated by the base station from the base station (S250).

Next, the channel switching controller 150 switches to the allocated redundant channel according to the redundant channel information (S260).

Finally, the communication unit 160 controls to communicate with the base station through the redundant channel (S270).

As described above, in the method of reducing inter-channel interference using the surplus channel of the present invention, when an inter-channel interference (ICI) occurs, the base station requests a surplus channel and receives an arbitrary surplus channel, and through the corresponding surplus channel. By communicating, communication obstacles due to interchannel interference can be overcome.

In addition, the apparatus 100 for reducing inter-channel interference according to the present invention may communicate again through an existing cellular channel when the communication ICI with the base station is removed while maintaining communication through the redundant channel (S310). This is done by the following process.

3 is a flowchart illustrating a method of reducing inter-channel interference using redundant channels when ICI is removed according to an embodiment of the present invention.

First, when the ICI is removed during communication with the base station through the redundant channel (S320), the apparatus 100 for reducing inter-channel interference according to the present invention requests a predetermined first cellular channel allocation to the base station. The signal is transmitted (S330).

In this case, the base station senses the first cellular channel using the channel sensing unit according to the first cellular channel allocation request signal, and transmits the first cellular channel to the mobile station, which is an apparatus 100 for reducing inter-channel interference.

Next, the mobile station receives the first cellular channel information allocated by the base station (S340).

Next, when the mobile station receives the first cellular channel information, the mobile station transmits a response signal to switch to the first cellular channel to the base station (S350), and the allocated first according to the first cellular channel information. Switch to the cellular channel (S360).

Finally, the mobile station communicates with the base station via the first cellular channel (S370).

In addition, in the apparatus 100 for reducing inter-channel interference using the surplus channel of the present invention, the apparatus 100 for reducing inter-channel interference, which is the mobile station, is a secondary user when the surplus channel used is a shared channel. In the case where the shared channel is used through Opportunity Access to avoid the use of the frequency of the incumbent user, the surplus user may use another surplus channel if the incumbent user appears.

In this case, the present invention determines that the incumbent user terminal uses the surplus channel when communication is not performed in the surplus channel for a predetermined threshold, or the incumbent user terminal at predetermined intervals. If it is determined whether the surplus channel is used by checking whether the surplus channel is used, the incumbent user terminal determines that the surplus channel is used. .

As described above, the method for reducing inter-channel interference using the redundant channel according to the present invention is performed when an incumbent user using the shared channel appears while using the shared channel. You can also control the use.

4 is a flowchart illustrating a method of reducing inter-channel interference by using a surplus channel when an incumbent user appears while using a shared channel according to an embodiment of the present invention.

First, as shown, the apparatus 100 for reducing inter-channel interference using the surplus channel of the present invention, it is determined whether a predetermined cumulative user (inccumbent user) terminal uses the surplus channel (S401) .

Next, when the redundant channel is used by the incumbent user terminal, the present invention stops using the redundant channel and switches to a predetermined second cellular channel (S402).

Next, the present invention determines whether ICI exists in the second cellular channel (S403).

In this case, when the ICI is present in the second cellular channel according to the determination, the present invention transmits a signal indicating whether ICI is present to the base station and requests another redundant channel (S404).

Next, the present invention receives a response signal for the other redundant channel request from the base station (S405).

At this time, the base station senses another surplus channel using a predetermined channel sensing unit (S406).

Next, the present invention receives a signal for requesting to switch to the other redundant channel from the base station (S409).

Next, the present invention transmits a response signal to the base station to the base station (S410).

In this case, the present invention switches to the other redundant channel according to the signal requesting to switch to the other redundant channel received from the base station (S411).

Finally, the present invention communicates with the base station through the other redundant channel (S412).

As described above, the present invention may allocate the sensed surplus channel to the apparatus 100 for reducing the inter-channel interference by sensing the surplus channel which is the mobile station in the base station, and as follows, a channel sensing unit configured in the mobile station ( Another redundant channel may be sensed using 170), and the corresponding redundant channel may be used after notifying the base station of the sensed redundant channel.

First, the apparatus 100 for reducing inter-channel interference using the surplus channel of the present invention senses the other surplus channel using the channel sensing unit 170 (S407).

Next, the present invention transmits a signal indicating whether the other surplus channel sensed by the channel sensing unit 170 to the base station (S408).

Next, the present invention receives a signal for requesting to switch to the other redundant channel from the base station (S409).

Next, the present invention switches to the other redundant channel according to the signal requesting to switch to the other redundant channel received from the base station (S411).

Finally, the present invention communicates with the base station through the other redundant channel (S412).

In addition, the method for reducing inter-channel interference using the redundant channel of the present invention may be maintained by avoiding this when an incumbent user uses the shared channel when the shared channel is used. In this case, unlike the previous case, after switching to the second cellular channel, when the inter-channel interference is eliminated as a result of determining whether the inter-channel interference occurs, the present invention maintains the second cellular channel as follows. .

5 is a flowchart illustrating a method of reducing inter-channel interference using redundant channels when inter-channel interference is eliminated after switching to a second cellular channel according to an embodiment of the present invention.

First, as shown, the device 100 for reducing the inter-channel interference using the redundant channel, if there is no ICI in the second cellular channel, transmits a signal indicating whether or not to resolve the ICI to the base station ( S501).

Next, the present invention receives the second cellular channel maintenance request signal from the base station (S502), and transmits a response signal for the second cellular channel maintenance request signal to the base station (S503).

Finally, the present invention maintains the second cellular channel (S504) and communicates with the base station through the second cellular channel (S505).

The present invention provides an apparatus and method for reducing the inter-channel interference when the inter-channel interference occurs in the communication between the mobile station and the base station, the foregoing description has been described in consideration of the relationship with the base station from the mobile station point of view. As will be described in terms of the base station.

6 is a block diagram illustrating a configuration of an apparatus for reducing inter-channel interference using redundant channels according to another embodiment of the present invention.

The apparatus 600 for reducing inter-channel interference using the surplus channel of the present invention includes a CQI information receiver 610 for periodically receiving CQI (Channel Quality Indicator) information from a mobile station and a predetermined mobile station. A channel allocation request signal receiving unit 620 for receiving a surplus channel allocation request signal, a channel sensing unit 630 for sensing a predetermined surplus channel for the channel allocation request signal, and redundant channel information for the sensed surplus channel; And a channel information transmitter 640 for transmitting to the mobile station and a communication unit 650 for communicating with the mobile station through the redundant channel.

7 is a flowchart illustrating a method for reducing interchannel interference using redundant channels according to another embodiment of the present invention.

The method for reducing inter-channel interference using the redundant channel of the present invention can be performed using the apparatus 600 for reducing the inter-channel interference using the redundant channel, and the method will be described in order as follows.

First, the CQI information receiver 610 periodically receives CQI (Channel Quality Indicator) information from a predetermined mobile station (S710).

In this case, the mobile station determines whether ICI occurs (S720), and when the ICI occurs, transmits a signal for requesting a predetermined surplus channel to the apparatus 600 for reducing inter-channel interference, which is a base station.

Next, the channel assignment request signal receiver 620 receives a predetermined surplus channel assignment request signal from the mobile station (S730).

Next, the channel sensing unit 630 senses a predetermined surplus channel for the channel allocation request signal (S740).

Next, the channel information transmitter 640 transmits the surplus channel information on the sensed surplus channel to the mobile station (S740).

At this time, the mobile station switches to the redundant channel for the received redundant channel information (S760).

Finally, the communication unit 650 communicates with the mobile station through the redundant channel (S770).

The apparatus 600 for reducing the inter-channel interference using the redundant channel and the method for reducing the inter-channel interference using the apparatus are similar to whether the CQI occurs like the apparatus 100 for reducing the inter-channel interference using the redundant channel. Depending on whether the cellular channel is used or not, depending on whether an incumbent user is used, it is also possible to determine whether to use another redundant channel.

Embodiments according to the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as a hard disk, a floppy disk, and a magnetic tape; optical media such as CD-ROM and DVD; magnetic recording media such as a floppy disk; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

1 is a block diagram illustrating a configuration of an apparatus for reducing interchannel interference using a surplus channel according to an embodiment of the present invention.

2 is a flowchart illustrating a method of reducing inter-channel interference using redundant channels according to an embodiment of the present invention.

3 is a flowchart illustrating a method of reducing inter-channel interference using redundant channels when ICI is removed according to an embodiment of the present invention.

4 is a flowchart illustrating a method of reducing inter-channel interference by using a surplus channel when an incumbent user appears while using a shared channel according to an embodiment of the present invention.

5 is a flowchart illustrating a method of reducing inter-channel interference using redundant channels when inter-channel interference is eliminated after switching to a second cellular channel according to an embodiment of the present invention.

6 is a block diagram illustrating a configuration of an apparatus for reducing inter-channel interference using redundant channels according to another embodiment of the present invention.

7 is a flowchart illustrating a method for reducing interchannel interference using redundant channels according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: device for reducing interchannel interference using redundant channels

110: CQI information transmission unit

120: channel status control unit

130: channel allocation request signal transmission unit

140: channel information receiver

150: channel switching control unit

160: communication unit

170: channel sensing unit

Claims (25)

Periodically transmitting channel quality indicator (CQI) information to a predetermined base station; Analyzing specific data of the CQI information including a Signal-to-Interference-and Noise Ratio (SINR) by comparing it with a predetermined reference value; Determining whether ICI (Inter Channel Interference) occurs according to the analysis result; When the ICI occurs according to the determination, transmitting a predetermined redundant channel allocation request signal to the base station; Receiving redundant channel information allocated by the base station; Switching to the allocated redundant channel according to the redundant channel information; And Communicating with the base station through the redundant channel Method for reducing the inter-channel interference using the redundant channel comprising a. delete The method of claim 1, According to the analysis result, determining whether the ICI (Inter Channel Interference) occurs, And determining that the ICI has occurred when the SINR is lower than the reference value. The method of claim 1, When the redundant channel allocation request signal is received, the base station transmits the redundant channel information sensed and extracted in real time or the redundant channel information periodically sensed and stored in a predetermined database to a predetermined mobile station. A method for reducing interchannel interference using redundant channels. The method of claim 1, And the redundant channel is one of a shared channel, an open channel, or an additional license band. The method of claim 5, The shared channel includes an ultrahigh frequency (UHF) TV channel, And said open channel comprises an Industrial Scientific Medical (ISM) channel. The method of claim 1, When the ICI is removed during communication with the base station through the redundant channel, Transmitting a predetermined first cellular channel allocation request signal to the base station; Receiving first cellular channel information assigned by the base station; When receiving the first cellular channel information, transmitting a response signal to the base station to switch to the first cellular channel; Switching to the assigned first cellular channel according to the first cellular channel information; And Communicating with the base station via the first cellular channel The method of reducing inter-channel interference using the redundant channel, characterized in that it further comprises. The method of claim 5, If the surplus channel is a shared channel, Determining whether a predetermined incumbent user terminal uses the redundant channel; Switching the redundant channel to a predetermined second cellular channel when the incumbent user terminal is used; Determining whether ICI is present in the second cellular channel; If the ICI exists in the second cellular channel according to the determination, requesting another redundant channel by transmitting a signal indicating whether the ICI exists; Receiving a response signal for the other redundant channel request from the base station; Receiving a signal from the base station requesting to switch to the other redundant channel; Switching to the other redundant channel according to a signal requesting to switch to the other redundant channel received from the base station; And Communicating with the base station through the other redundant channel Method for reducing the inter-channel interference using the redundant channel comprising a. 9. The method of claim 8, When the other surplus channel is sensed using a predetermined channel sensing unit, Sensing the other redundant channel using a predetermined channel sensing unit; Transmitting a signal indicating whether the other redundant channel sensed by the channel sensing unit to the base station; Receiving a signal from the base station requesting to switch to the other redundant channel; Switching to the other redundant channel according to a signal requesting to switch to the other redundant channel received from the base station; And Communicating with the base station through the other redundant channel The method of reducing inter-channel interference using the redundant channel, characterized in that it further comprises. 9. The method of claim 8, If there is no ICI in the second cellular channel, transmitting a signal indicating whether to cancel ICI to the base station; Receiving the second cellular channel maintenance request signal from the base station; Sending a response signal to the base station in response to the second cellular channel maintenance request signal; And Communicating with the base station via the second cellular channel Method for reducing the inter-channel interference using the redundant channel comprising a. 9. The method of claim 8, It is determined that the incumbent user terminal uses the surplus channel. When no communication is performed on the redundant channel for a predetermined threshold or at a predetermined cycle, the cumulative user terminal checks whether or not the cumulative user terminal uses the redundant channel so that the incumbent user terminal receives the redundant channel. The method of reducing inter-channel interference using the redundant channel, characterized in that any one of the case of detecting the use of. A computer-readable recording medium in which a program for executing the method of any one of claims 1 to 11 is recorded. A CQI information transmitter periodically transmitting channel quality indicator (CQI) information to a predetermined base station; A channel state control unit determining whether an ICI (Inter Channel Interference) occurs by analyzing specific data of the CQI information including a Signal-to-Interference-and Noise Ratio (SINR) by comparing it with a predetermined reference value; A channel allocation request signal transmission unit for transmitting a predetermined excess channel allocation request signal to the base station when the ICI occurs according to the determination; A channel information receiver configured to receive redundant channel information allocated by the base station; A channel switching controller for switching to the allocated redundant channel according to the redundant channel information; And A communication unit controlling to communicate with the base station through the redundant channel Apparatus for reducing inter-channel interference using the redundant channel comprising a. delete 14. The method of claim 13, The channel state control unit, And when the SINR is lower than the reference value, determining that the ICI has occurred. 14. The method of claim 13, When the redundant channel allocation request signal is received, the base station transmits the redundant channel information sensed and extracted in real time or the redundant channel information periodically sensed and stored in a predetermined database to a predetermined mobile station. An apparatus for reducing interchannel interference using redundant channels. 14. The method of claim 13, And the redundant channel is any one of a shared channel, an open channel, and an additional license band. 18. The method of claim 17, The shared channel includes an ultrahigh frequency (UHF) TV channel, And said open channel comprises an Industrial Scientific Medical (ISM) channel. 14. The method of claim 13, An apparatus for reducing inter-channel interference using the redundant channel, When the ICI is removed during communication with the base station through the redundant channel, Transmitting a predetermined first cellular channel allocation request signal to the base station; Receiving first cellular channel information assigned by the base station; When receiving the first cellular channel information, transmitting a response signal to the base station to switch to the first cellular channel; Switching to the assigned first cellular channel according to the first cellular channel information; And Communicating with the base station via the first cellular channel Apparatus for reducing inter-channel interference using the redundant channel, characterized in that for performing. 18. The method of claim 17, An apparatus for reducing inter-channel interference using the redundant channel, If the surplus channel is a shared channel, Determining whether a predetermined incumbent user terminal uses the redundant channel; Switching to a second predetermined cellular channel when the redundant channel is used by the incumbent user terminal; Determining whether ICI is present in the second cellular channel; If the ICI exists in the second cellular channel according to the determination, requesting another redundant channel by transmitting a signal indicating whether the ICI exists; Receiving a response signal for the other redundant channel request from the base station; Receiving a signal from the base station requesting to switch to the other redundant channel; Switching to the other redundant channel according to a signal requesting to switch to the other redundant channel received from the base station; And Communicating with the base station through the other redundant channel Apparatus for reducing inter-channel interference using the redundant channel, characterized in that for performing. 21. The method of claim 20, An apparatus for reducing inter-channel interference using the redundant channel, When the other surplus channel is sensed using a predetermined channel sensing unit, Sensing the other redundant channel using a predetermined channel sensing unit; Transmitting a signal indicating whether the other redundant channel sensed by the channel sensing unit to the base station; Receiving a signal from the base station requesting to switch to the other redundant channel; Switching to the other redundant channel according to a signal requesting to switch to the other redundant channel received from the base station; And Communicating with the base station through the other redundant channel Apparatus for reducing inter-channel interference using the redundant channel, characterized in that for performing. 21. The method of claim 20, An apparatus for reducing inter-channel interference using the redundant channel, If there is no ICI in the second cellular channel, Transmitting a signal indicating whether to cancel ICI to the base station; Receiving the second cellular channel maintenance request signal from the base station; Sending a response signal to the base station in response to the second cellular channel maintenance request signal; And Communicating with the base station via the second cellular channel Apparatus for reducing inter-channel interference using the redundant channel, characterized in that for performing. 21. The method of claim 20, It is determined that the incumbent user terminal uses the surplus channel. When no communication is performed in the surplus channel for a predetermined threshold or at a predetermined cycle, the cumulative user terminal determines whether the surplus channel is used by the incumbent user terminal to determine whether the surplus channel is used. The apparatus for reducing inter-channel interference using the surplus channel, characterized in that any one of the case of detecting the use. In a method for reducing interchannel interference, Periodically receiving CQI (Channel Quality Indicator) information from a predetermined mobile station; Receiving a predetermined redundant channel allocation request signal from the mobile station; Sensing a predetermined surplus channel for the channel allocation request signal using a predetermined channel sensing unit; Transmitting surplus channel information for the sensed surplus channel to the mobile station; And Communicating with the mobile station via the redundant channel Method for reducing the inter-channel interference using the redundant channel comprising a. An apparatus for reducing interchannel interference, A CQI information receiver which periodically receives CQI information from a predetermined mobile station; A channel allocation request signal receiving unit which receives a predetermined excess channel allocation request signal from the mobile station; A channel sensing unit configured to sense a predetermined surplus channel with respect to the channel allocation request signal; A channel information transmitter for transmitting surplus channel information on the sensed surplus channel to the mobile station; And A communication unit for communicating with the mobile station through the redundant channel Apparatus for reducing inter-channel interference using the redundant channel comprising a.

Images