KR101072197B1 - Methods and apparatus' of saving current for mobile phone - Google Patents

Abstract

The present invention saves the overall current consumption by varying the current consumption by applying different ACPR in the strong and weak field of the portable terminal, and sets the amplification ratio of the power amplifier to a level controlled by the base station by the controller of the portable terminal. And amplify the high frequency communication signal applied from the transmitter, detect and analyze the signal received from the base station, and if it is determined to be a strong electric field, control the switching unit to wirelessly communicate the communication signal matched to the minimum adjacent channel power ratio from the second matching unit through the duplexer unit. When the transmission is determined to be a weak electric field, the switching unit controls the switching unit to wirelessly transmit a communication signal matched to the optimal adjacent channel power ratio from the first matching unit through the duplexer unit, and the base station is controlled by the controller of the mobile terminal. Set the output power amplification factor to the level to control Amplifying the power of the high frequency communication signal, and if the detected base station received signal is a strong electric field, switching is set to match the minimum adjacent channel power ratio. It is characterized in that, such as, the portable terminal saves the current consumption as a whole, the battery is used for a long time, there is an effect that information loss does not occur due to communication interruption due to increased communication time.

Description

Current consumption saving device and method for mobile terminal {METHODS AND APPARATUS 'OF SAVING CURRENT FOR MOBILE PHONE}

1 is a functional block diagram of an adjacent channel power ratio control device of a conventional portable terminal;

2 is a flowchart illustrating a method for controlling the adjacent channel power ratio of a conventional mobile terminal;

3 is a functional configuration of the current consumption device of the portable terminal of the present invention;

4 is a flowchart illustrating a method for saving current consumption of the mobile terminal of the present invention.

          ** Explanation of symbols on the main parts of the drawing **

100: transmitter 110: power amplifier 120: first matching unit

130: second matching unit 140: switching unit 150: duplexer

160: control unit

The present invention saves the current consumption by applying different adjacent channel power ratio values by electric field analysis of the mobile terminal. In particular, in case of being located in the strong electric field area and the weak electric field area by analyzing the base station reception signal. The present invention relates to a device and method for saving current consumption of a portable terminal, which reduces the overall current consumption by switching the adjacent channel power ratio matching value of the output power to a minimum and maximum within an allowable range.

The mobile terminal for mobile communication (MS: MOBILE STATION) is free to move in a service area (SERVICE AREA) formed by a base station (RAN: RADIO ACCESS NETWORK) of the registered mobile communication system, and wirelessly connects with a desired party anytime, anywhere. It is a high-tech wireless communication device that communicates, and because the operation power is supplied from the battery for mobility and made compact for portability, the capacity of the battery is limited.

The mobile communication system is a mobile communication system occupies a limited number of radio frequency resources at the same time, various ways have been proposed by a method of sharing radio frequency resources, the most representative of which is developed by the Republic of Korea and the United States There are GDMA (GLOBAL SYSTEM FOR MOBILE COMMUNICATION) developed in Europe for the application of CODE DIVISION MULTIPLE ACCESS (CDMA) and time division.

The code division multiple access scheme (CDMA) is to be monitored and managed by one base station (RAN) in such a way that the code is assigned to the same frequency of the allocated band and only communicates when the code values match. The wireless signal outputted by the plurality of mobile terminals MS has an operating characteristic of maintaining the quality of the communication signal only when it is wirelessly received at the same level at the base station.

Therefore, since the mobile terminal MS controls the output power under the control and monitoring of the base station RAN, it maintains an optimum adjacent channel power ratio (ACPR: ADJACENT CHANNEL POWER RATIO).

The area near the straight line within the service area formed by the base station becomes a strong electric field area capable of receiving strong signals from the base station, and the area far from the straight line becomes a weak electric field area receiving weak signals. Since mobility is guaranteed, it is located in the strong electric field area or in the weak electric field.

If the mobile terminal is located in a strong electric field, it is not necessary to consider the adjacent current power ratio (ACPR), which consumes a lot of current, and if the mobile terminal is located in a weak electric field, the adjacent channel power ratio (ACPR) must be considered to maintain call quality. do.

Therefore, when the code division multiple access type mobile terminal is located in the strong electric field area, it is necessary to develop a technology to reduce the current consumption since the current consumption does not consider the adjacent channel power ratio.

Hereinafter, a method of controlling an adjacent channel power ratio of a portable terminal according to the related art will be described with reference to the accompanying drawings.

It is attached to describe the prior art, Figure 1 is a functional block diagram of the adjacent channel power ratio control device of the conventional mobile terminal, Figure 2 is a flow chart of a method of controlling the adjacent channel power ratio of the mobile terminal according to the prior art.

Referring to the attached channel power ratio control apparatus of the mobile terminal (MS) according to the prior art with reference to the accompanying Figure 1, the transmitter 10, the baseband (BASE BAND) communication signal to be transmitted to the other party and the mobile communication method Up-modulation to a high frequency (RF) signal is output to the power amplifier 20.

The power amplifier 20 amplifies the output power OUT POWER of the input high frequency (RF) signal to a level set by the control of the control unit (not shown) and applies it to the matching unit 30. Since the matching unit 30 applies the input signal to the duplexer unit 40 by matching the input signal with respect to a set adjacent channel power ratio (ACPR), unnecessary noise component signals are blocked by the duplexer unit 40. The antenna is applied to an antenna, radiated, and wirelessly transmitted.

The adjacent channel power ratio (ACPR) control apparatus according to the prior art having the above-described configuration is fixed so that the matching unit 30 processes the input signal mainly around the adjacent channel power ratio (ACPR), so the importance of the adjacent channel power ratio is important. Even in this low base station signal strong field region, there is a problem in that the current consumption is increased by the matching process of the adjacent channel power ratio.

Hereinafter, referring to the accompanying FIG. 2, a method for controlling an adjacent channel power ratio (ACPR) of a mobile terminal (MS) according to the prior art will be described. The wireless control unit controls and monitors the entire operation of the mobile terminal (MS). If it is determined whether to transmit a signal (S10), and in the case of transmitting a wireless signal in the determination (S10), the amplification factor (GAIN) of the power amplifier 20 by the output power control value applied from the base station (RAN) Control the output power (S20).

The output power amplified to the level LEVEL controlled by the power amplifier 20 is applied to the matching unit 30 and is matched to an adjacent channel power ratio ACPR value fixed to the matching unit 30. In operation S30, the matched signal is applied to the duplexer 40 to remove the noise signal component and is applied to the antenna to be radiated so that the signal is radiated (S40).

That is, the prior art of the above-described configuration, regardless of whether the mobile terminal MS is in the strong electric field region near the base station RAN or in the weak electric field region far from the base station RAN, Since there is a match with a fixed set ACPR value, there is a problem in that a large current is consumed by the fixed set adjacent channel power ratio (ACPR) in a strong electric field region where less current may be consumed.

Therefore, since the battery current of a limited capacity is consumed by the fixed adjacent channel power ratio as described above, there is a problem of shortening the use time of the mobile terminal.

The present invention sets the power amplification factor of a mobile terminal to a level controlled by a base station, and when the base station signal is received by a strong electric field, is set to match the minimum adjacent channel power ratio with low current consumption, and when received by a weak electric field, the current consumption is optimal. It is an object of the present invention to provide an apparatus and method for saving current consumption of a portable terminal that saves current consumption by matching and setting adjacent channel power ratios.

In order to achieve the above object, the present invention sets an amplification ratio of a power amplifier to a level controlled by a base station by a controller of a portable terminal, amplifies a high frequency communication signal applied from a transmitter, and receives from a base station. Detects and analyzes a signal to be determined as a strong electric field, and controls the switching unit to wirelessly transmit a communication signal matched to the minimum adjacent channel power ratio from the second matching unit through the duplexer unit. And wirelessly transmitting a communication signal matched with an optimal neighbor channel power ratio through the duplexer.

In addition, the present invention devised to achieve the above object, the power amplifier for amplifying and outputting the power of a high frequency signal applied by a controlled amplification rate; A first matching unit for matching and outputting a signal applied from the power amplifier with an optimum adjacent channel power ratio; A second matching unit for matching and outputting a signal applied from the power amplifier with a minimum adjacent channel power ratio; A switching unit connected to the first matching unit and the second matching unit, respectively, and switching the path by a control signal; And a control unit for controlling the amplification ratio of the power amplifier and outputting and monitoring a control signal for controlling the amplification ratio of the power amplifier and selecting a second matching unit if the analyzed peripheral wireless environment is a strong electric field and selecting the first matching unit if the weak electric field is a weak electric field. It is characterized by.

In addition, the present invention devised to achieve the above object, by setting the output power amplification rate to a level controlled by the base station by the control unit of the mobile terminal, amplifies the power of the input high-frequency communication signal, receiving the detected base station If the signal is a strong electric field, the switching is set to match the minimum adjacent channel power ratio, and if the weak field is set to the switching to match the optimal adjacent channel power ratio, characterized in that a series of radio transmission.

In addition, the present invention has been made in order to achieve the above object, the power control process of setting the output power to a level controlled by the base station if it determines that the radio signal is transmitted by the controller of the mobile terminal; An electric field process for analyzing an base station signal received by the controller of the process to detect an electric field and determine whether a strong electric field or a weak electric field is generated; In the above process, if it is determined as a strong electric field, the matching is set to the minimum adjacent channel power ratio, and if it is determined that the weak electric field is matched to the optimal neighbor channel power ratio, the matching process is performed.

Hereinafter, the present invention will be described with reference to the accompanying drawings, a current consumption device and method for a portable terminal.

It is attached to explain the present invention, Figure 3 is a functional configuration of the current consumption device of the portable terminal according to the present invention, Figure 4 is a flow chart of the current consumption method of the portable terminal according to the present invention.

Referring to FIG. 3, according to the present invention, a power consumption saving device of a mobile terminal is described. At the level LEVEL controlled by the base station RAN by the controller 160 of the mobile terminal MS Setting the amplification factor of the power amplifier 110, power amplified high-frequency communication signal applied from the transmitter 100, detects and analyzes the signal received from the base station (RAN) by determining the strong electric field switching unit 140 Control and wirelessly transmit the communication signal matched to the minimum adjacent channel power ratio (ACPR) from the second matching unit 130 through the duplexer unit 150, and if it is determined as a weak electric field, control the switching unit 140 to match the first match. The unit 120 is configured to wirelessly transmit a communication signal matched with the optimal adjacent channel power ratio through the duplexer unit 150.

According to the above configuration, the power consumption saving device of the mobile terminal according to the present invention will be described again. The communication signal to be transmitted to the counterpart designated by the mobile communication mobile terminal (MS) is inputted to the baseband and the mobile communication high frequency. A transmitter 100 for up-converting to an RF signal and outputting the signal;

A power amplifier 110 connected to the transmitter 100 to amplify and output an applied high frequency signal at an amplification rate controlled by the controller 160;

Matching and outputting a signal applied from the power amplifier 110 to an optimum adjacent channel power ratio (ACPR), the power is higher than the adjacent channel within the allowable adjacent channel power ratio range (POWER) A first matching unit 120 for matching and outputting the result;

Matching the signal applied from the power amplifier 110 to a minimum adjacent channel power ratio (ACPR) and outputting the minimum current within the allowable adjacent channel power ratio (ACPR) range of the applied high frequency (RF) signal A second matching unit 130 matching and outputting in a consumed state,

A switching unit 140 connected to the first matching unit 120 and the second matching unit 130 and switching switching of the path according to a control signal, respectively;

A duplexer unit connected to the switching unit 140 and having a path for separating an applied transmit (TX) high frequency (RF) signal from a receive (RX) high frequency (RF) signal and applying it in one direction to the antenna ANTENNA ( 150),

The control signal for controlling the amplification ratio of the power amplifier 110 and selecting the second matching unit 130 if the analyzed ambient wireless environment is a strong electric field, and selecting the first matching unit 120 for the weak electric field. By outputting and monitoring the switching unit 140, the output power control signal wirelessly received from the mobile communication base station (RAN) is detected and analyzed to control the amplification rate of the power amplifier 110, and the strength of the received base station signal The detection and analysis is performed to control the switching unit 140 in the strong electric field area so that the second matching unit 130 signal is applied to the duplexer unit 150, and in the weak electric field area, the switching unit 140 controls the first field. The control unit 160 is configured to set the signal of the matching unit 120 to be applied to the duplexer unit 150 and to control and monitor each function unit.

Hereinafter, according to the present invention having the above configuration, it will be described in detail with reference to the accompanying drawings, the current consumption device of the portable terminal.

In the code division multiple access (CDMA) mobile communication system, the power of a radio signal output from a plurality of mobile terminals (MS) located in a service area of a base station (RAN) is based on system operation characteristics. RAN) must be received at the same level (LEVLE) to ensure accurate control, and each mobile station (MS) does not process adjacent mobile station (MS) signals as noise and has excellent signal-to-noise ratio of communication signals. Keep it.

Accordingly, the base station RAN remotely controls each of the output powers of the plurality of mobile terminals MS located in the service area, and each of the mobile terminals MS is controlled by the base station. Control the output power, while matching the power ratio of the adjacent channel spaced apart by 1.25 MHz by the channel power ratio of the currently occupied 30 KHz band within the permissible range. (MATCHING) processing, and the matching processing as described above is referred to as an adjacent channel power ratio (ACPR: ADJACENT CHANNEL POWER RATIO).

If the value of the adjacent channel power ratio (ACPR) is large, the communication quality is good, but the current consumption increases, so there is a problem that a limited battery cannot be used for a long time. Since there is a problem of deterioration in quality, in the prior art, each intermediate value was selected and fixed.

However, the mobile terminal MS is guaranteed to be mobile, and may be in a strong electric field region close to the base station RAN, may be in a weak electric field region far from the base station, and communication quality in the strong electric field region. Although the adjacent channel power ratio (ACPR) may be lowered to some extent, the communication quality is not guaranteed due to the noise signal generated by the surrounding environment in the weak electric field region, so the adjacent channel power ratio (ACPR) is maximum or optimal. You need to set it.

Therefore, the present invention, by analyzing the weak electric field and the strong electric field by the mobile terminal itself as described above, the matching unit is set to the maximum or optimal adjacent channel power ratio (ACPR) with a large current consumption, the minimum adjacent channel with a small current consumption Each matching unit set to a power ratio (ACPR) is provided, and the path is selected by switching, thereby reducing the current consumption of the portable terminal as a whole.

The control unit 160 of FIG. 3 attached thereto analyzes a power control signal of a base station RAN wirelessly received through an antenna ANTENNA to control an amplification rate of the power amplification unit 110, and transmits the transmission unit 100. The up-converts the input baseband communication signal into a high frequency communication signal and applies it to the power amplifier 110.

The power amplifier 110 amplifies and outputs the power (POWER) of the radio frequency (RF) signal applied from the transmitter 100 by the amplification factor set by the control of the controller 160.

The high frequency signal amplified and output from the power amplifier 110 is applied to the first matching unit 120 and the second matching unit 130, respectively, and the first matching unit 120 generates a large amount of current. Matching and outputting an input high frequency signal at a maximum or optimal ACPR, which increases the communication quality by consuming, and outputs the second matching unit 130 by reducing current consumption. Match and output a high frequency signal with a minimum adjacent channel power ratio (ACPR) that maintains.

At this time, the control unit 160 detects and analyzes the base station signal received through the antenna, so that the mobile terminal MS is currently located in the weak field region of a location far from the base station, or a strong power near the base station RAN. Check whether it is located in the system area, and by setting the path by controlling the switching unit 140 by the confirmation.

The control unit 160 controls the switching unit 140 to be matched to an optimal adjacent channel power ratio (ACPR) in order to maintain the call quality when the mobile terminal MS is located in the weak electric field area. In this case, the path setting switching with the first matching unit 120 is performed, and when located in a strong electric field, the call quality is maintained by the strong electric field, so the minimum adjacent channel power ratio (ACPR) with low current consumption is achieved. The switching unit 140 is controlled to be matched with (), and a switching process of setting a path (PATH) with the second matching unit 130 is performed.

Therefore, when the mobile terminal MS is located in the strong electric field region, the switching unit 140 is controlled to select the second matching unit 130 that consumes the minimum current within a range allowed by the call quality. This saves the current consumption of the terminal.

The high frequency signal output in the matched state from the switching unit 140 controlled as described above is applied to the duplexer unit 150 so that the noisy signal is blocked and radiated through the antenna, thereby wirelessly transmitting.

Hereinafter, referring to the accompanying FIG. 4, according to the present invention, a method for saving current consumption of a portable terminal is set by the controller of the portable terminal. It consists of a series of processes to amplify the power of the communication signal, and set the switching to match the minimum adjacent channel power ratio if the detected base station received signal is a strong electric field, and to set the switching to match the optimal neighbor channel power ratio if the weak electric field is a wireless transmission. .

According to the present invention having the above-described configuration, the method for saving the current consumption of the portable terminal will be described again. If it is determined that the wireless signal is transmitted by the controller of the portable terminal, the output power is set to a level controlled by the base station. Monitoring each functional unit by a controller of the portable terminal and determining whether to wirelessly transmit a communication signal (S100); In the step (S100), when the wireless transmission of the communication signal power control process consisting of analyzing the control signal applied from the base station to set the level of the output power (S110),

The base station signal received by the controller of the power control process is analyzed to detect an electric field and determine whether it is a strong or weak electric field. The process of receiving and detecting the base station signal by the controller and analyzing the strength of the electric field (S120). ; An electric field process including a process of determining whether the electric field analyzed in the process S120 is a strong electric field or a weak electric field S130,

If it is determined as a strong electric field in the electric field process, matching is set to the minimum adjacent channel power ratio (ACPR), and if it is determined as a weak electric field, the matching is set to the optimal adjacent channel power ratio (ACPR) and wirelessly transmitted. If it is determined as the strong electric field, setting the matching to the minimum adjacent channel power ratio (S140); If it is determined by the controller to be a weak electric field, setting a matching to an optimum adjacent channel power ratio (S150); In the above process, the matching process consists of a step (S160) of wirelessly transmitting a communication signal by means of a matching adjacent channel power ratio (ACPR).

Hereinafter, the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings, a method for saving current consumption of a portable terminal.

When the baseband communication signal to be transmitted to the designated counterpart is applied to the transmitter 100 and a control command to be transmitted is applied (S100), the controller 160 of the mobile communication terminal MS (S100) receives the transmitter 100. Control and up-modulate the baseband communication signal into a mobile communication high frequency (RF) signal, detect and analyze an output power control signal wirelessly received from the mobile communication base station (RAN), and the power amplifier 110. Since the amplification ratio of the control unit is controlled, the first power matching unit 120 and the second matching unit are amplified by amplifying the power (POWER) of the high frequency (RF) signal applied from the transmitter 100 to the controlled level LEVEL. Outputs to 130, respectively (S110).

In addition, the controller 160 detects a signal wirelessly received from the antenna, and analyzes whether it is a strong electric field in an area close to the base station RAN or a weak electric field in an area far from the base station (S120). As a result of the analysis in S120, it is determined whether the mobile terminal is located in the current strong electric field area or the weak electric field area (S130).

The controller 160 controls the switching unit 140 to set a path with the second matching unit 130 when it is determined that the region is a strong electric field in the process S130, and thus the power amplifier 110. The high-frequency signal is amplified and output from the power, and is matched to the minimum adjacent channel power ratio (ACPR) with a small current consumption within the allowed call quality range (S140).

When it is determined in the step (S130) that the weak electric field area by the controller 160, the controller 160 controls the switching unit 140 to control the first matching unit 120 and the path (PATH) is set. Therefore, the high frequency signal that is amplified and output from the power amplifier 110 is output by matching (MATCHING) the maximum or optimal adjacent channel power ratio (ACPR) within an allowable range by the first matching unit 120. (S150).

The high frequency signals that are matched and output in the set manners in the processes S140 and S150 are applied to the duplexer 150 to remove noise signal components, and are radiated by being applied to the antennas (S160). .

Therefore, the present invention of the above configuration, when the mobile terminal is located in the strong electric field area, because it consumes the minimum current within the allowable range to maintain the call quality, so as to reduce the current consumption as a whole, use the battery for a long time There is an advantage.

According to the present invention having the above configuration, the mobile terminal analyzes the signal received from the base station to determine whether it is a strong electric field area or a weak electric field area, in the strong electric field area to match the output signal with a minimum adjacent channel power ratio, the weak electric field area Since the output signal is matched by the optimal ratio of adjacent channel power, there is an industrial use effect of reducing the current consumption overall and using the battery for a long time.

In addition, since the portable terminal saves the current consumption as a whole and uses the battery for a long time, communication time is increased and information loss due to communication interruption does not occur, thereby increasing the reliability.

Claims (11)

The amplification ratio of the power amplifier is set to a level controlled by the base station by the controller of the portable terminal, the power amplification of the high frequency communication signal applied from the transmitter, the signal received from the base station is detected and analyzed, and the switching unit is controlled if it is determined as a strong electric field. Wirelessly transmits a communication signal matched to the minimum neighboring channel power ratio from the second matching unit through the duplexer unit, and if it is determined as a weak electric field, controls the switching unit to transmit a communication signal matched to the optimal neighbor channel power ratio from the first matching unit to the duplexer unit. Current consumption device of a mobile terminal, characterized in that consisting of a wireless transmission. A power amplifier for amplifying and outputting the power of the high frequency signal applied by the controlled amplification factor; A first matching unit for matching and outputting a signal applied from the power amplifier with an optimum adjacent channel power ratio; A second matching unit which matches and outputs a signal applied from the power amplifier with a minimum adjacent channel power ratio; A switching unit connected to the first matching unit and the second matching unit, respectively, and switching to select a path by a control signal; And a control unit for controlling the amplification ratio of the power amplifier and outputting and monitoring a control signal for controlling the amplification ratio of the power amplifier and selecting a second matching unit if the analyzed peripheral wireless environment is a strong electric field and selecting the first matching unit if the weak electric field is a weak electric field. Current consumption device of a mobile terminal, characterized in that. The method of claim 2, A transmitter which accesses the power amplifier and inputs a communication signal to be transmitted to the other party as a baseband, and converts the radio signal into a mobile communication high frequency signal; And a duplexer unit connected to the switching unit and having a path for separating the transmitted high frequency signal from the received high frequency signal and applying it in one direction to the antenna. The method of claim 2, wherein the first matching unit, And a high frequency signal applied from the power amplifier is configured to match and output power higher than an adjacent channel within an allowable adjacent channel power ratio range. The method of claim 2, wherein the second matching unit, And a high-frequency signal applied from the power amplifier is configured to match and output a minimum current consumption within an allowable adjacent channel power ratio range. The method of claim 2, wherein the control unit, Detects and analyzes the output power control signal wirelessly received from the mobile communication base station to control the amplification rate of the power amplifier, detects and analyzes the strength of the received base station signal, and controls the switching unit to control the switching unit in the case of a strong electric field. Is configured to be applied to the duplexer unit, and if the weak field is controlled, the switching unit is controlled to set the first matching unit signal to be applied to the duplexer unit, while controlling and monitoring each functional unit. Current saver. Set the output power amplification rate to the level controlled by the base station by the controller of the mobile terminal and amplify the power of the input high frequency communication signal, and if the detected base station received signal is a strong electric field, switching is set to match the minimum adjacent channel power ratio, If the weak field is a series of processes for wireless transmission by setting the switching to match the optimal ratio of the adjacent channel power, the current consumption method of the mobile terminal. A power control process of setting output power to a level controlled by the base station if it is determined by the controller of the portable terminal to transmit the radio signal; An electric field process for detecting an electric field by analyzing a base station signal received by the control unit of the process and determining whether it is a strong field or a weak field; If it is determined that the strong electric field in the above process, the matching set to the minimum adjacent channel power ratio, and if determined as a weak electric field, the matching set to the wireless transmission by setting the matching to the optimal adjacent channel power ratio characterized in that the power consumption saving method of the mobile terminal. The method of claim 8, wherein the power control process, Monitoring each functional unit by a controller of the portable terminal and determining whether to transmit a communication signal wirelessly; In the process of wirelessly transmitting a communication signal in the process of analyzing the control signal applied from the base station to control the level of the output power, characterized in that the power consumption saving method of the mobile terminal. The method of claim 8, wherein the electric field process, Receiving and detecting a base station signal by the controller of the power control process and analyzing the strength of the electric field; A method for saving current consumption of a portable terminal, characterized by comprising the step of determining whether the electric field analyzed in the above process is a strong electric field or a weak electric field. The method of claim 8, wherein the matching process, If it is determined by the controller of the electric field process to be a strong electric field, setting the matching to the minimum adjacent channel power ratio; If it is determined by the controller of the electric field process that it is a weak electric field, setting the matching to the optimal neighbor channel power ratio; And a step of wirelessly transmitting a communication signal according to the matching adjacent channel power ratio in the above process.

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