KR20150143101A - Apparatus for antenna impedance matching of electronic device and thereof method - Google Patents

Apparatus for antenna impedance matching of electronic device and thereof method Download PDF

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Publication number
KR20150143101A
KR20150143101A KR1020140072167A KR20140072167A KR20150143101A KR 20150143101 A KR20150143101 A KR 20150143101A KR 1020140072167 A KR1020140072167 A KR 1020140072167A KR 20140072167 A KR20140072167 A KR 20140072167A KR 20150143101 A KR20150143101 A KR 20150143101A
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South Korea
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transmission power
amount
tuner state
tuner
power variation
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KR1020140072167A
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Korean (ko)
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김태윤
임채만
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삼성전자주식회사
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Priority to KR1020140072167A priority Critical patent/KR20150143101A/en
Priority to PCT/KR2015/006005 priority patent/WO2015190896A1/en
Publication of KR20150143101A publication Critical patent/KR20150143101A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)

Abstract

The present invention relates to an apparatus and method for antenna impedance matching of an electronic device, and more particularly, to an antenna impedance matching apparatus which determines power control information and uplink scheduling information including information for controlling transmission power, And determines a transmission power change amount in a plurality of tuner states for adjusting an antenna impedance using the power control information and the uplink scheduling information, A mapping control unit for selecting one of the mapping control units; And an antenna matching unit for performing antenna impedance matching in the selected tuner state. Various embodiments are possible.

Description

[0001] APPARATUS FOR ANTENNA IMPEDANCE MATCHING OF ELECTRONIC DEVICE AND THEREOF METHOD [0002]

The present invention relates to an apparatus and method for antenna impedance matching of an electronic device.

The antenna transmission efficiency in an electronic device such as a portable terminal can be determined by the input impedance of the antenna. Accordingly, impedance matching is generally used to minimize the reflection or loss of the impedance difference between two different connection ends when connecting one output terminal and the input terminal.

However, the radiation impedance of the antenna can be changed depending on the surrounding environment. For example, in the case of a portable terminal, the input impedance of the antenna may be greatly changed depending on the position of the user's hand and the method of holding the portable terminal. If the input impedance of the antenna is changed, the transmission power actually output to the antenna can be greatly reduced. In addition, since the portable terminal increases the current consumption of the power amplifier to transmit a constant output signal from the antenna, the battery consumption may increase.

Conventionally, there has been proposed a method of minimizing the reflection coefficient by obtaining a reflection coefficient at the antenna port, or an open-loop method of sensing the state of the portable terminal and using a predetermined impedance value according to the situation .

However, the method of minimizing the reflection coefficient requires additional hardware for calculating the reflection coefficient, and the manufacturing cost may increase according to the use of the additional hardware component. In addition, since the open loop system in which various states of the portable terminal are decided and the impedance value corresponding to the state of the portable terminal is stored and used, the state of the portable terminal may vary depending on the user, There may be limitations.

Various embodiments of the present invention can provide a method and apparatus for matching antenna impedance with a simple operation.

Various embodiments of the present invention can provide an apparatus and method for performing accurate impedance matching using power control information and uplink scheduling information.

According to various embodiments of the present invention, in an antenna impedance matching apparatus, power control information and uplink scheduling information including information for controlling transmission power are determined, and the power control information and the uplink scheduling information are used A mapping controller for determining a transmission power change amount in a plurality of tuner states for adjusting an antenna impedance and selecting one of a plurality of tuner states based on the amount of change in transmission power for each tuner state, And an antenna matching unit for performing impedance matching.

According to various embodiments of the present invention, there is provided an antenna impedance matching method comprising: determining power control information and uplink scheduling information including information for controlling transmission power; Determining a transmission power variation amount in a plurality of tuner states for adjusting an antenna impedance using the power control information and the uplink scheduling information; Selecting one of a plurality of tuner states based on the amount of change in transmission power per tuner state; And performing antenna impedance matching in the selected tuner state.

As described above, transmission antenna impedance matching can be more accurately and efficiently performed by performing transmission antenna impedance matching using power control information and uplink scheduling information.

In addition, since an additional hardware building block for calculating the reflection coefficient is not used, the manufacturing cost of the terminal can be reduced.

Also, data transmission performance can be improved due to an increase in antenna transmission efficiency, and battery consumption current can be reduced due to an increase in antenna transmission efficiency.

1 shows a block diagram of an electronic device according to various embodiments of the present invention.
2 illustrates an antenna impedance matching apparatus according to various embodiments of the present invention.
3 shows a flow diagram for antenna impedance matching of an electronic device according to various embodiments of the present invention.
4 shows a flow diagram for antenna impedance matching of an electronic device according to various embodiments of the present invention.
5 shows a flow diagram for antenna impedance matching of an electronic device according to various embodiments of the present invention.
6A through 6B illustrate transmission of power control information between a physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH) in a long term evolution (LTE) system according to various embodiments of the present invention. .
Figure 7 illustrates an impedance matching circuit in accordance with various embodiments of the present invention.
8 (a) through 8 (c) illustrate impedance matching circuits according to various embodiments of the present invention.
9 (a) through 9 (b) illustrate an impedance matching circuit according to various embodiments of the present invention.

Best Mode for Carrying Out the Invention Various embodiments of the present invention will be described below with reference to the accompanying drawings. The various embodiments of the present invention are capable of various changes and may have various embodiments, and specific embodiments are illustrated in the drawings and the detailed description is described with reference to the drawings. It should be understood, however, that it is not intended to limit the various embodiments of the invention to the specific embodiments, but includes all changes and / or equivalents and alternatives falling within the spirit and scope of the various embodiments of the invention. In connection with the description of the drawings, like reference numerals have been used for like elements.

The use of "including" or "including" in various embodiments of the present invention can be used to refer to the presence of a corresponding function, operation or component, etc., which is disclosed, Components and the like. Also, in various embodiments of the invention, the terms "comprise" or "having" are intended to specify the presence of stated features, integers, steps, operations, components, parts or combinations thereof, But do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

The " or " in various embodiments of the present invention includes any and all combinations of words listed together. For example, " A or B " may comprise A, comprise B, or both A and B.

&Quot; first, " " second, " " first, " or " second, " etc. used in various embodiments of the present invention may modify various elements of various embodiments, I never do that. For example, the representations do not limit the order and / or importance of the components. The representations may be used to distinguish one component from another. For example, both the first user equipment and the second user equipment are user equipment and represent different user equipment. For example, without departing from the scope of the various embodiments of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it is to be understood that the element may be directly connected or connected to the other element, It should be understood that there may be other new components between the different components. On the other hand, when it is mentioned that an element is "directly connected" or "directly connected" to another element, it is understood that there is no other element between the element and the other element It should be possible.

The terminology used in the various embodiments of the present invention is used only to describe a specific embodiment and is not intended to limit the various embodiments of the present invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present invention belong. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the related art and, unless expressly defined in the various embodiments of the present invention, are ideally or excessively formal It is not interpreted as meaning.

An electronic device according to various embodiments of the present invention may be a device including a communication function. For example, the electronic device can be a smartphone, a tablet personal computer, a mobile phone, a videophone, an e-book reader, a desktop personal computer, a laptop Such as a laptop personal computer (PC), a netbook computer, a personal digital assistant (PDA), a portable multimedia player (PMP), an MP3 player, a mobile medical device, a camera, or a wearable device Such as a head-mounted device (HMD) such as electronic glasses, an electronic garment, an electronic bracelet, an electronic necklace, an electronic app apparel, an electronic tattoo, or a smart watch.

According to some embodiments, the electronic device may be a smart home appliance with communication capabilities. [0003] Smart household appliances, such as electronic devices, are widely used in the fields of television, digital video disk (DVD) player, audio, refrigerator, air conditioner, vacuum cleaner, oven, microwave oven, washing machine, air cleaner, set- And may include at least one of a box (e.g., Samsung HomeSync ™, Apple TV ™, or Google TV ™), game consoles, an electronic dictionary, an electronic key, a camcorder,

According to some embodiments, the electronic device may be a variety of medical devices (e.g., magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), computed tomography (CT) (global positioning system receiver), EDR (event data recorder), flight data recorder (FDR), automotive infotainment device, marine electronic equipment (eg marine navigation device and gyro compass), avionics, A security device, a head unit for a vehicle, an industrial or home robot, an ATM (automatic teller's machine) of a financial institution, or a POS (point of sale) of a shop.

According to some embodiments, the electronic device may be a piece of furniture or a structure / structure including a communication function, an electronic board, an electronic signature receiving device, a projector, (E.g., water, electricity, gas, or radio wave measuring instruments, etc.). An electronic device according to various embodiments of the present invention may be one or more of the various devices described above. Further, the electronic device according to various embodiments of the present invention may be a flexible device. It should also be apparent to those skilled in the art that the electronic device according to various embodiments of the present invention is not limited to the above-described devices.

Hereinafter, an electronic device according to various embodiments will be described with reference to the accompanying drawings. The term user as used in various embodiments may refer to a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

Hereinafter, various embodiments of the present invention will be described with respect to an apparatus and method for antenna impedance matching of an electronic apparatus.

Figure 1 shows a block diagram 100 of an electronic device according to various embodiments of the present invention. 1, the electronic device includes at least one application processor (AP) 112, a communication module 120, a subscriber identification module (SIM) card 124, a memory 130, a sensor module 140, an input device 150, a display 160, 170, an audio module 180, a camera module 191, a power management module 195, a battery 196, an indicator 197, and a motor 198.

The AP 112 may control a plurality of hardware or software components connected to the AP 112 by operating an operating system or an application program, and may perform various data processing and operations including multimedia data. The AP 112 may be implemented as a system on chip (SoC), for example. According to one embodiment, the AP 112 may further include a graphics processing unit (GPU) (not shown).

The communication module 120 may perform data transmission / reception in communication between the electronic device and other electronic devices connected via a network. According to one embodiment, the communication module 120 may include a cellular module 121, a Wifi module 123, a BT module 125, a GPS module 127, an NFC module 128, and a radio frequency (RF) module 129.

The cellular module 121 may provide voice calls, video calls, text services, or Internet services over a communication network (e.g., LTE, LTE-A, CDMA, WCDMA, UMTS, WiBro or GSM). In addition, the cellular module 121 can perform identification and authentication of electronic devices within the communication network, for example, using a subscriber identity module (e.g., SIM card 124). According to one embodiment, the cellular module 121 may perform at least some of the functions that the AP 112 may provide. For example, the cellular module 121 may perform at least some of the multimedia control functions.

According to one embodiment, the cellular module 821 may include a communication processor (CP). In addition, the cellular module 121 may be implemented with SoC, for example. In FIG. 1, components such as the cellular module 121 (e.g., a communication processor), the memory 130, or the power management module 195 are shown as separate components from the AP 112. However, according to one embodiment, (E.g., cellular module 121) of the above-described components.

According to one embodiment, the AP 112 or the cellular module 121 (e.g., communication processor) loads commands or data received from at least one of non-volatile memory or other components connected to each other into a volatile memory for processing can do. In addition, the AP 112 or the cellular module 121 may store data generated by at least one of the other components or received from at least one of the other components in the non-volatile memory.

Each of the Wifi module 123, the BT module 125, the GPS module 127, and the NFC module 128 may include a processor for processing data transmitted and received through a corresponding module, for example. 1, the cellular module 121, the Wifi module 123, the BT module 125, the GPS module 127, and the NFC module 128 are shown as separate blocks. However, according to one embodiment, At least some (e.g., two or more) of the modules 127 or NFC modules 128 may be included in one integrated chip (IC) or IC package. For example, at least some of the processors corresponding to the cellular module 121, the Wifi module 123, the BT module 125, the GPS module 127 or the NFC module 128, respectively (e.g., corresponding to the communication processor and Wifi module 123 corresponding to the cellular module 121) Wifi processor) can be implemented in a single SoC.

The RF module 129 is capable of transmitting and receiving data, for example, transmitting and receiving an RF signal. The RF module 129 may include, for example, a transceiver, a power amplifier module (PAM), a frequency filter, or a low noise amplifier (LNA). In addition, the RF module 129 may further include a component, for example, a conductor or a lead, for transmitting and receiving electromagnetic waves in free space in wireless communication. 1, the cellular module 121, the Wifi module 123, the BT module 125, the GPS module 127, and the NFC module 128 share one RF module 129. However, according to an embodiment, the cellular module 121, the Wifi module 123 , The BT module 125, the GPS module 127, or the NFC module 128 can transmit and receive RF signals through separate RF modules.

The SIM card 124 may be a card including a subscriber identity module and may be inserted into a slot formed at a specific location of the electronic device. The SIM card 124 may include unique identification information (e.g., ICCID) or subscriber information (e.g., international mobile subscriber identity (IMSI)).

The memory 130 may include an internal memory 132 or an external memory 134. The built-in memory 132 may be, for example, a volatile memory (for example, a dynamic RAM, an SRAM, a synchronous dynamic RAM (SDRAM), or the like) or a non-volatile memory , At least one of an OTPROM (one time programmable ROM), a PROM (programmable ROM), an EPROM (erasable and programmable ROM), an EEPROM (electrically erasable and programmable ROM), a mask ROM, a flash ROM, a NAND flash memory, . ≪ / RTI >

According to one embodiment, the internal memory 132 may be a solid state drive (SSD). The external memory 834 may be a flash drive such as a compact flash (CF), a secure digital (SD), a micro secure digital (SD), a mini secure digital (SD), an extreme digital And the like. The external memory 134 may be functionally connected to the electronic device 101 through various interfaces. According to one embodiment, the electronic device may further include a storage device (or storage medium) such as a hard drive.

The sensor module 140 may measure a physical quantity or sense an operating state of the electronic device, and convert the measured or sensed information into an electrical signal. The sensor module 140 may include, for example, a gesture sensor 140A, a gyro sensor 140B, an air pressure sensor 140C, a magnetic sensor 140D, an acceleration sensor 140E, a grip sensor 140F, a proximity sensor 140G, blue sensor), a living body sensor 140I, a temperature / humidity sensor 140J, a luminance sensor 140K, or an ultraviolet (UV) sensor 140M. Additionally or alternatively, the sensor module 140 may include, for example, an E-nose sensor (not shown), an EMG sensor (not shown), an EEG sensor (not shown) an electrocardiogram sensor (not shown), an infra red sensor (not shown), an iris sensor (not shown), or a fingerprint sensor (not shown). The sensor module 140 may further include a control circuit for controlling at least one sensor included therein.

The input device 150 may include a touch panel 152, a (digital) pen sensor 154, a key 156, or an ultrasonic input device 158. The touch panel 152 can recognize a touch input by at least one of an electrostatic type, a pressure sensitive type, an infrared type, and an ultrasonic type, for example. The touch panel 152 may further include a control circuit. In electrostatic mode, physical contact or proximity recognition is possible. The touch panel 152 may further include a tactile layer. In this case, the touch panel 152 may provide a tactile response to the user.

The (digital) pen sensor 154 may be implemented using the same or similar method as receiving the touch input of the user, or using a separate recognition sheet. The key 156 may include, for example, a physical button, an optical key or a keypad. The ultrasonic input device 158 is an apparatus that can confirm data by sensing a sound wave from a microphone (e.g., a microphone 188) in an electronic device through an input tool for generating an ultrasonic signal, and is capable of wireless recognition. According to one embodiment, the electronic device may use the communication module 120 to receive user input from an external device (e.g., a computer or a server) connected thereto.

The display 160 (e.g., the display 150) may include a panel 162, a hologram device 164, or a projector 166. The panel 162 may be, for example, a liquid crystal display (LCD) or an active matrix organic light-emitting diode (AM-OLED). The panel 162 may be embodied, for example, in a flexible, transparent, or wearable manner. The panel 162 may be formed of a single module with the touch panel 152. The hologram device 164 can display a stereoscopic image in the air using the interference of light. The projector 166 can display an image by projecting light onto a screen. The screen may be located, for example, inside or outside the electronic device. According to one embodiment, the display 160 may further include a control circuit for controlling the panel 162, the hologram device 164, or the projector 166.

The interface 170 may include, for example, a high-definition multimedia interface (HDMI) 172, a universal serial bus (USB) 174, an optical interface 176, or a D-sub (D-subminiature) 178. The interface 170 may, for example, be included in the communication interface 160 shown in FIG. Additionally or alternatively, the interface 170 may include, for example, a mobile high-definition link (MHL) interface, a secure digital (SD) card / multi-media card (MMC) interface, or an infrared data association can do.

The audio module 180 can convert sound and electric signals into both directions. The audio module 180 may process sound information input or output through, for example, a speaker 182, a receiver 184, an earphone 186, a microphone 188, or the like.

According to one embodiment, the camera module 191 may include at least one image sensor (e.g., a front sensor or a rear sensor), a lens (not shown), an image signal processor ) Or a flash (not shown), such as an LED or xenon lamp.

The power management module 195 can manage the power of the electronic device 101. Although not shown, the power management module 195 may include, for example, a power management integrated circuit (PMIC), a charger integrated circuit ("IC"), or a battery or fuel gauge.

The PMIC can be mounted, for example, in an integrated circuit or a SoC semiconductor. The charging method can be classified into wired and wireless. The charging IC can charge the battery, and can prevent an overvoltage or an overcurrent from the charger. According to one embodiment, the charging IC may comprise a charging IC for at least one of a wired charging scheme or a wireless charging scheme. The wireless charging system may be, for example, a magnetic resonance system, a magnetic induction system or an electromagnetic wave system, and additional circuits for wireless charging may be added, such as a coil loop, a resonant circuit or a rectifier have.

The battery gauge can measure the remaining amount of the battery 196, the voltage during charging, the current or the temperature, for example. The battery 196 may store or generate electricity, and may supply power to the electronic device using the stored or generated electricity. The battery 896 may include, for example, a rechargeable battery or a solar battery.

The indicator 197 may indicate a specific state of the electronic device or a part thereof (e.g., the AP 112), for example, a boot state, a message state, or a charged state. The motor 198 can convert an electrical signal into a mechanical vibration. Although not shown, the electronic device may include a processing unit (e.g., a GPU) for mobile TV support. The processing device for supporting the mobile TV can process media data conforming to standards such as digital multimedia broadcasting (DMB), digital video broadcasting (DVB), or media flow.

2 illustrates an antenna impedance matching apparatus according to various embodiments of the present invention.

2, the antenna impedance matching apparatus includes a baseband processing unit 200, an RF unit 202, a power amplification unit 204, an antenna matching unit 206, and a matching control unit 208. The baseband processor 200, the RF unit 202, the power amplifier 204 and the antenna matching unit 206 constitute the RF module 129 of FIG. 1, and the matching controller 208 The AP 112 shown in FIG.

The baseband processor 200 up / down converts a radio frequency signal into an analog signal or a digital signal corresponding to an intermediate frequency. The RF unit 302 converts a signal output from the baseband processing unit 200 into a signal of a transmission frequency band, and the power amplifier 204 amplifies the converted signal to a predetermined size.

The matching unit 206 matches the impedance of the antenna and the impedance of the previous stage of the antenna according to the control of the matching controller 208 and transmits the amplified signal from the power amplifier 204 through the antenna. In the embodiment, the antenna matching unit 206 may be configured as an impedance matching circuit as shown in FIGS. 7 to 9. In addition, the antenna matching unit 206 may be transited to any one of a plurality of tuner states, and each tuner state may be classified into different impedance values. For example, the first tuner state may have a first impedance value, the second tuner state may have a second impedance value, and the n-th tuner state may have an n-th impedance value. Here, the first impedance> the second impedance> ....> the nth impedance may be used.

The matching controller 208 can detect the power control information and the uplink scheduling information from the output signal when a signal is received from the transmitter and a signal is output from the baseband processor 200. [ In various embodiments, the power control information and the uplink scheduling information may be determined based on a corresponding power control algorithm or a corresponding uplink scheduling algorithm, respectively. The various embodiments of the present invention are not limited to specific power control algorithms or uplink scheduling algorithms. In yet another embodiment, the uplink scheduling information may be determined in the mobile terminal itself and the power control information may be provided from the base station.

For example, in the case of an LTE (Long Term Evolution) communication system, the power control information may include a TPC (Transmit) for sending down to the portable terminal from the base station so as to increase or decrease the transmission power of the portable terminal based on a predetermined target SIR or a target BLER Power Control) command. The uplink scheduling information may be modulation and coding scheme (MCS) information or a number of resource blocks (RBs) allocated for uplink data transmission. The MCS information or the allocated resource block number may be provided from the BS to the MS or may be determined by the MS's own UL scheduling algorithm.

In various embodiments, the power control information or the uplink scheduling information may be detected for each slot, for example. Then, the matching controller 208 can determine the amount of change in the transmission power based on the power control information and the uplink scheduling information. The matching controller 208 generates matching control information for matching the impedance of the antenna with the impedance of the antenna front end based on the determined amount of change in the transmission power. Then, the matching controller 208 outputs the generated matching control information to the antenna matching unit 206 so that antenna impedance matching can be performed. For example, the antenna matching unit 206 may adjust an impedance by changing an impedance value of at least one component according to the generated matching control information. For example, the matching controller 208 may select any of a plurality of tuner states of the antenna matching unit 206.

In various embodiments, the amount of change in transmit power may be determined from a difference between an assigned previous (t 1 ) transmit power value and an assigned current (t 2 ) transmit power value.

The antenna matching apparatus configured as described above may be included in a receiver, for example, a portable terminal. However, the antenna matching apparatus may be included in a transmitter, for example, a base station. For convenience of description, the antenna matching apparatus will be described as an example in which the mobile terminal includes the antenna matching apparatus.

Hereinafter, a process of performing antenna impedance matching by a portable terminal including the antenna matching apparatus will be described with reference to FIG. 3 to FIG. In the various embodiments of the present invention, the transmission power variation value of the electronic device measured using the power control information and the UL scheduling information for a predetermined time in the specific tuner state is compared with the transmission power in the previous tuner state, FIG. 4 is a block diagram of a tuner according to an embodiment of the present invention. It is possible to select a better tuner state depending on whether the change amount is increased or decreased at the previous transmission power by measuring the change amount of the transmission power of the electronic device for a predetermined time by changing to another tuner state after maintaining the tuner state in one tuner state have. Thereafter, it is possible to select the optimal tuner state based on the increase / decrease of the transmission power change sequentially or repeatedly by changing to another selected tuner state.

3 shows a flow diagram for antenna impedance matching of an electronic device according to various embodiments of the present invention.

Referring to FIG. 3, the electronic device can determine a transmission power change amount in each tuner state of the antenna matching unit 206, based on power control information and uplink scheduling information in operation 300. FIG.

The power control information and the uplink scheduling information may be information received from the base station to the electronic device or may be determined in the electronic device based on the corresponding control information or channel information from the base station. Or some control information may be determined in the electronic device and some other control information may be received from the base station.

For example, the power control information or the uplink scheduling information may be received from the base station in every slot or a predetermined period. However, the period in which the power control information is received is not limited to this, and can be variously changed.

The power control information indicates information for increasing or decreasing the transmission power of the electronic device, and may be determined based on received signal strength values measured by the base station (e.g., RSSI, SIR, and BLER).

The uplink scheduling information may be MCS information combined with a modulation and coding scheme or a number of allocated UL resource blocks.

Accordingly, when the power control information and the uplink scheduling information are determined, the electronic device can determine the amount of change in transmission power of the electronic device. Therefore, the electronic device can determine a change amount of the determined transmission power based on the power control information and the uplink scheduling information.

Preferably, the amount of change in the transmission power can be determined at any one point in time, but can be determined as an average value over a certain period of time.

The electronic device compares the transmission power variation determined in each tuner state of the antenna matching unit 206 at operation 302 and determines which of a plurality of tuner states of the antenna matching unit 206 You can choose. For example, when the transmission power measured in the second tuner state increases with respect to the transmission power measured in the first tuner state, the first tuner state is selected, and the second transmission power value measured in the first tuner state When the measured transmission power decreases in the tuner state, the second tuner state can be selected.

In various embodiments, when the second transmission power value measured in the first tuner state increases at a second time point relative to the first transmission power value measured in the first tuner state at the first time point, the second tuner state is selected And maintains the first tuner state when the second transmission power value measured in the first tuner state decreases at a second time point relative to the first transmission power value measured in the first tuner state at the first time point.

The electronic device may perform antenna impedance matching in the selected tuner state at operation 306. [

Meanwhile, steps 300 and 304 may be performed by the matching controller 208 shown in FIG. 2, and step 306 may be performed by the antenna matching unit 206.

4 shows a flow diagram for antenna impedance matching of an electronic device according to various embodiments of the present invention.

Referring to FIG. 4, the electronic device can set the first tuner state in operation 400 and measure the first transmission power in the first tuner state for a predetermined time in operation 402.

 The electronic device may set the second tuner state in operation 404 and measure the second transmit power in the second tuner state for a period of time in operation 406. [

 The electronic device can determine a first transmission power change amount in the first tuner state, a first transmission power change amount in the first tuner state, and a second transmission power variation amount in the second tuner state in operation 408. [ In various embodiments, the transmission power variation may be determined using the difference between the measured previous transmission power and the measured current transmission power. The power control information indicates information for increasing or decreasing the transmission power of the electronic device, and may be determined based on received signal strength values measured by the base station (e.g., RSSI, SIR, and BLER). The uplink scheduling information may be MCS information combined with a modulation and coding scheme or a number of allocated UL resource blocks.

The electronic device performs the antenna impedance matching in the second tuner state in operation 412 when the transmission power measured in the second tuner state is smaller than the transmission power value measured in the first tuner state in operation 410, The antenna impedance matching can be performed in the first tuner state when the transmission power measured in the second tuner state is increased with respect to the transmission power measured in the first tuner state.

In various embodiments, when the second transmit power value measured in the first tuner state increases at a second time point relative to the first transmit power value measured in the first tuner state at the first time point, And maintains the first tuner state when the second transmission power value measured in the first tuner state decreases at a second time point relative to the first transmission power value measured in the first tuner state at the first time point .

In various embodiments, the first transmission power change amount in the first tuner state and the second transmission power change amount in the second tuner state are compared, and if the first transmission power variation amount is larger than the second transmission power variation amount The antenna impedance matching may be performed in the second tuner state in operation 412 and the second transmission power variation amount may be set to perform the antenna impedance matching in the first tuner state in the operation 412 in which the first transmission power change amount is large.

As described above, when the antenna matching unit 206 is divided into a plurality of tuner states, a predetermined time is maintained after the first tuner state is set, and then the first tuner state is set to the second tuner state. The transmission power change amount can be measured using the power control information and the uplink scheduling information for a predetermined period of time after the change. The first tuner state is set when the measured transmission power variation amount increases and the second tuner state when the measured transmission power variation amount decreases. The same procedure can be repeatedly performed by the number of preset tuner states by a method of comparing the third tuner state with another predetermined tuner state.

The transmission power variation measured in one tuner state may be compared with the transmission power variation measured in another tuner state or the increase / decrease of the variation based on the transmission power in the previous tuner state may be compared to determine a relative optimal tuner state have.

5 shows a flow diagram for antenna impedance matching of an electronic device according to various embodiments of the present invention.

Referring to FIG. 5, the electronic device may set the first tuner state in operation 500 and measure the amount of change in transmission power in the first tuner state for a predetermined time in operation 502.

If the transmission power variation is decreased by comparing the first transmission power value at the first time point with the second transmission power value at the second time point in the first tuner state for a predetermined time in the operation 504, The antenna impedance matching can be performed. When the amount of change in the transmission power is decreased in the operation 508, the next tuner state can be set, and the transmission power and the change amount thereof can be measured in the next tuner state for a predetermined time.

6A through 6B illustrate transmission of power control information between a physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH) in a long term evolution (LTE) system according to various embodiments of the present invention. .

In the case of the LTE system, uplink power control information transmitted from a base station has a data channel (for example, PUSCH) and a control channel (for example, PUCCH) separately operated, and their channel characteristics are different. Both PUCCH and PUSCH information can be used for fast and effective impedance matching.

Referring to FIG. 6A, the UE can receive TPC and uplink resource allocation information for a PUSCH on a PDCCH (Physical Downlink Control Channel) downlink control channel from a base station, The uplink data can be transmitted to the base station using the PUSCH based on the TPC and the uplink scheduling information.

Referring to FIG. 6B, the UE can receive TPC and uplink PUCCH resource allocation information for a PUCCH from a base station through a PDCCH (Physical Downlink Control Channel) downlink control channel, and the UE transmits the received PUCCH The uplink control signal can be transmitted to the base station using the PUCCH based on the TPC and PUCCH resource allocation information.

In various embodiments, the PUCCH transmit power at the LTE terminal may be defined as Equation (1) when the PUCCH is transmitted and (2) when the PUCCH is not transmitted.

Figure pat00001

Figure pat00002

Here, P CMAX is the maximum UE transmit power (Configured maximum UE transmit power), P O _ PUCCH is semi-fixed base level (Semi-static base level) and, PL C is the estimated downlink path loss (Estimated downlink pathloss) set , h (n CQI, n HARQ , n SR) & Δ F_ PUCCHC the power offset (power offset based on PUCCH format) based on the PUCCH format and, Δ TxD is a power for PUCCH transmission using the two antenna ports offsets (power offset for PUCCH transmission on two antenna ports).

In Equation (1), g (i) is a portion controlled by power control information (TPC) transmitted from a base station. In addition, transmission power is affected by scheduling information such as a transmission mode and a PUCCH format . 6 (a) shows the transmission of the PUCCH power control information. Considering these values, the amount by which the transmission power of the actual PUCCH is controlled can be monitored for T time as follows.

When considering TPC + uplink scheduling information,

? PUCCH =? (P prv (previous PUCCH transmit power) - P new (currently controlled PUCCH transmit power))

Also, the PUSCH transmission power according to the power control is defined as Equation (3) when only the PUSCH is transmitted and is defined as Equation (4) when the PUCCH and PUSCH are simultaneously transmitted, Can be defined as " (5) "

Figure pat00003

Figure pat00004

Figure pat00005

In this case, P CMAX is the set maximum UE transmit power, M PUSCH is the assigned number of RBs for the PUSCH, P O _ PUSCH is the semi-fixed base level, static base level) and, PL C is the estimated downlink path loss (estimated downlink pathloss), α C is the path loss compensation factor (pathloss compensation factor), △ TFC is a control parameter (control parameter based on the MCS based on MCS) to be.

If the transmission power of the PUSCH, and the portion f c (i) is controlled by the power control information (TPC), in addition also it may be considered with the transmission power changed in accordance with the RB number of the PUSCH with the MCS assignment. 6 (b) shows PUSCH power control information transmission. Considering these values, the amount by which the transmission power of the actual PUSCH is controlled can be monitored for T time as follows.

- When considering TPC + uplink scheduling information

? PUSCH =? (P prv (Previous PUSCH transmit power) - P new (currently controlled PUSCH transmit power))

- If TPC + uplink scheduling information is considered selectively

△ PUSCH = Σ (P prv _ sel ( before PUSCH) - P new _ sel (the current control PUSCH))

P prv _ a sel and P new _ sel is a value generated by using the uplink scheduling information TPC + selected, for example, RB change and if the only effect of the transmit power per RB consideration regardless of PUSCH in the uplink transmission power < A value obtained by removing the variation due to RB in Equations (3) to (5) can be used.

In various embodiments, [Delta] PUCCH and [Delta] PUSCH may be computed each time there is an uplink transmission or a corresponding TPC is received and may be used as follows. N PUCCH and N PUSCH can be defined as the number of times the PUCCH and PUSCH uplink transmission power are controlled (for example, the number of times the PUCCH and PUSCH are transmitted).

△ When considering only the PUCCH, being M = △ PUCCH, △ when considering only the PUSCH, to be M = △ P US CH, △ when considering both the PUCCH and △ PUSCH, M = f (△ PUCCH, △ PUSCH) .

Here, f (a, b) uses a mean value of two values, a weighted average using N PUCCH and N PUSCH , or a sum of two values in such a manner that values are generated using Δ PUCCH and Δ PUSCH . .

As described above, the tuner state for antenna impedance matching can be adjusted using the determined transmission power change amount. The adjustment of the tuner state can be applied to the embodiment shown in FIG. 3 to FIG.

Figure 7 illustrates an impedance matching circuit in accordance with various embodiments of the present invention.

Referring to FIG. 7, in the impedance matching circuit, a plurality of capacitors are connected in parallel, and each of the capacitors can be turned on / off according to a switch. Therefore, the tuner state can be defined according to the on / off combination of each switch.

In various embodiments, an ESD (Electrostatic Discharge) circuit may be added to the incoming and outgoing capacitor inputs, respectively.

8 (a) through 8 (c) illustrate impedance matching circuits according to various embodiments of the present invention.

8A to 8C, the impedance matching circuit may include a capacitor C and a reactance L in a Π-shape.

For example, as shown in FIG. 8 (a), one reactance L and two capacitors C 1 and C 2 are connected in a Π-form, or two reactances L 1 and L 2 2 ) and one capacitor (C) may be connected in Π-form.

In another embodiment, as shown in FIG. 8 (c), the two reactances L 1 and L 2 , the two capacitors C 1 and C 2 , and the one resistor R V may be connected in a Π- have.

The reactances L 1 and L 2 and the capacitors C 1 and C 2 may have a variable impedance value and the tuner state may be defined according to a combination of the variable capacitor value and the variable reactance value.

9 (a) through 9 (b) illustrate an impedance matching circuit according to various embodiments of the present invention.

9A to 9B, the impedance matching circuit may include a capacitor C and a reactance L in a T-shape.

For example, as shown in FIG. 9 (a), two reactances L 1 and L 2 and one capacitor C are connected in a T-shape, or one reactance L and two reactances L The capacitors C 1 and C 2 may be connected in a T-shape.

Here, the reactances (L 1 , L 2 ) and the capacitors (C 1 , C 2 ) may have a variable impedance value, and the tuner state may be defined according to a combination of the variable capacitor value and the variable reactance value.

Each of the above-described components of the electronic device according to various embodiments of the present invention may be composed of one or more components, and the name of the component may be changed according to the type of the electronic device. The electronic device according to various embodiments of the present invention may be configured to include at least one of the above-described components, and some components may be omitted or further include other additional components. In addition, some of the components of the electronic device according to various embodiments of the present invention may be combined into one entity, so that the functions of the components before being combined can be performed in the same manner.

The term &quot; module &quot; as used in various embodiments of the present invention may mean a unit including, for example, one or a combination of two or more of hardware, software or firmware. A &quot; module &quot; may be interchangeably used with terms such as, for example, unit, logic, logical block, component or circuit. A &quot; module &quot; may be a minimum unit or a portion of an integrally constructed component. A &quot; module &quot; may be a minimum unit or a portion thereof that performs one or more functions. &Quot; Modules &quot; may be implemented either mechanically or electronically. For example, a &quot; module &quot; in accordance with various embodiments of the present invention may be implemented as an application-specific integrated circuit (ASIC) chip, field-programmable gate arrays (FPGAs) And a programmable-logic device.

According to various embodiments, at least a portion of a device (e.g., modules or functions thereof) or a method (e.g., operations) according to various embodiments of the present invention may be, for example, a computer readable And may be implemented with instructions stored on a computer-readable storage medium. The instructions, when executed by one or more processors (e.g., the processor 112), may cause the one or more processors to perform functions corresponding to the instructions. The computer readable storage medium may be, for example, the memory 130. At least some of the programming modules may be implemented (e.g., executed) by, for example, the processor 210. At least some of the programming modules may include, for example, modules, programs, routines, sets of instructions or processes, etc. to perform one or more functions.

The computer-readable recording medium includes a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, an optical recording medium such as a CD-ROM (Compact Disc Read Only Memory), a DVD (Digital Versatile Disc) A magneto-optical medium such as a floppy disk, and a program command such as a read only memory (ROM), a random access memory (RAM), a flash memory, Module) that is configured to store and perform the functions described herein. The program instructions may also include machine language code such as those generated by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the various embodiments of the present invention, and vice versa.

Modules or programming modules according to various embodiments of the present invention may include at least one or more of the elements described above, some of which may be omitted, or may further include other additional elements. Operations performed by modules, programming modules, or other components in accordance with various embodiments of the invention may be performed in a sequential, parallel, iterative, or heuristic manner. Also, some operations may be performed in a different order, omitted, or other operations may be added.

According to various embodiments, there is provided a storage medium storing instructions that, when executed by at least one processor, cause the at least one processor to be configured to perform at least one operation, Can be performed.

An antenna impedance matching operation method includes: determining power control information and uplink scheduling information including information for controlling transmission power; Determining a transmission power variation amount in a plurality of tuner states for adjusting an antenna impedance using the power control information and the uplink scheduling information; Selecting one of a plurality of tuner states based on the amount of change in transmission power per tuner state; And performing antenna impedance matching in the selected tuner state.

Selecting one of a plurality of tuner states based on the amount of change in transmission power per tuner state includes: determining an amount of transmission power to be increased or decreased from a reference transmission power by using a variation in transmission power per tuner state; And selecting the tuner state corresponding to the largest amount of transmission power change, the amount of transmission power reduced from the reference transmission power.

Wherein the operation of selecting one of the plurality of tuner states based on the amount of change in transmission power per tuner state includes comparing an amount of change in the first transmission power of the first tuner state with a second variation in transmission power of the second tuner state ; Selects the second tuner state when the first transmission power variation amount is larger than the second transmission power variation amount and selects the first tuner state when the second transmission power variation amount is larger than the first transmission power variation amount . &Lt; / RTI &gt;

Comparing an amount of change in transmission power of the selected tuner state with a variation amount of transmission power of another tuner state; When the transmission power variation amount of the selected tuner state is larger than the transmission power variation amount of the selected tuner state, And maintaining the selected tuner state.

Wherein the operation of selecting one of the plurality of tuner states based on the amount of change in transmission power per tuner state comprises: comparing an amount of change in the first transmission power of the first tuner state with a variation of the second transmission power; And maintaining the current tuner state when the first transmission power variation is greater than the second transmission power variation.

Changing the second transmission power change amount to a next tuner state when the second transmission power change amount is larger than the first transmission power change amount; Comparing the third transmission power variation amount of the next tuner state with the fourth transmission power variation amount; And maintaining the current tuner state when the third transmission power variation is larger than the fourth transmission power variation.

And changing the fourth transmission power change amount to the next tuner state when the fourth transmission power change amount is larger than the third transmission power change amount.

Wherein the determining the power control information and the uplink scheduling information comprises: receiving the power control information and the uplink scheduling information from a base station; And extracting the power control information and the uplink scheduling information from the received signal.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And the like. Accordingly, the scope of various embodiments of the present invention should be construed as being included in the scope of various embodiments of the present invention without departing from the scope of the present invention, all changes or modifications derived from the technical idea of various embodiments of the present invention .

200: base band processing unit, 202: RF unit,
204: power amplifier unit, 206: antenna matching unit
208:

Claims (20)

In the antenna impedance matching apparatus,
The method includes determining power control information and uplink scheduling information including information for controlling transmission power, and using the power control information and the uplink scheduling information, A mapping controller for determining a change amount and selecting one of a plurality of tuner states based on the amount of change in transmission power per tuner state;
And an antenna matching unit for performing antenna impedance matching in the selected tuner state.
The method according to claim 1,
The mapping control unit,
Determines the amount of transmit power to be increased or decreased from the reference transmit power by using the amount of change in transmit power per tuner state,
And selecting a tuner state corresponding to the largest amount of transmission power change, the amount of transmission power being reduced from the reference transmission power.
The method according to claim 1,
The mapping control unit,
Comparing the first transmission power variation amount of the first tuner state and the second transmission power variation amount of the second tuner state,
Selects the second tuner state when the first transmission power variation amount is larger than the second transmission power variation amount and selects the first tuner state when the second transmission power variation amount is larger than the first transmission power variation amount Lt; / RTI &gt;
The method of claim 3,
The mapping control unit,
Comparing a transmission power variation amount of the selected tuner state with a transmission power variation amount of a different tuner state,
When the transmission power variation amount of the selected tuner state is larger than the transmission power variation amount of the selected tuner state, And maintaining the selected tuner state.
The method according to claim 1,
The mapping control unit,
Compares the first transmission power variation amount in the first tuner state with the second transmission power variation amount,
And maintaining the current tuner state when the first transmission power variation is greater than the second transmission power variation.
6. The method of claim 5,
The mapping control unit,
Changes to the next tuner state when the second transmission power variation is larger than the first transmission power variation,
Compares the third transmission power variation amount of the next tuner state with the fourth transmission power variation amount,
And maintaining the current tuner state when the third transmission power variation is greater than the fourth transmission power variation.
The method according to claim 6,
The mapping control unit,
And changing the fourth transmission power change amount to the next tuner state when the change amount is larger than the third transmission power change amount.
The method according to claim 1,
The mapping control unit,
Receiving the power control information and the uplink scheduling information from a base station,
And extracting the power control information and the uplink scheduling information from the received signal.
The method according to claim 1,
Wherein the power control information is a TPC (Transmit Power Control) command.
The method according to claim 1,
Wherein the uplink scheduling information includes at least one of modulation and coding scheme (MCS) information, a number of allocated resource blocks (RBs), a transmission mode, and channel format information.
In the antenna impedance matching method,
Determining power control information and uplink scheduling information including information for controlling transmission power;
Determining a transmission power variation amount in a plurality of tuner states for adjusting an antenna impedance using the power control information and the uplink scheduling information;
Selecting one of a plurality of tuner states based on the amount of change in transmission power per tuner state;
And performing antenna impedance matching in the selected tuner state.
12. The method of claim 11,
And selecting one of a plurality of tuner states based on the amount of change in transmission power per tuner state,
Determining an amount of transmit power to be increased or decreased from a reference transmit power by using the amount of change in transmit power per tuner state;
And selecting a tuner state corresponding to the largest amount of transmission power change, the amount of transmission power being reduced from the reference transmission power.
12. The method of claim 11,
And selecting one of a plurality of tuner states based on the amount of change in transmission power per tuner state,
Comparing the first transmission power variation amount of the first tuner state and the second transmission power variation amount of the second tuner state;
Selects the second tuner state when the first transmission power variation amount is larger than the second transmission power variation amount and selects the first tuner state when the second transmission power variation amount is larger than the first transmission power variation amount Lt; / RTI &gt;
14. The method of claim 13,
Comparing an amount of change in transmission power of the selected tuner state with a variation amount of transmission power of another tuner state;
When the transmission power variation amount of the selected tuner state is larger than the transmission power variation amount of the selected tuner state, And maintaining the selected tuner state.
12. The method of claim 11,
And selecting one of a plurality of tuner states based on the amount of change in transmission power per tuner state,
Comparing the first transmission power change amount in the first tuner state and the second transmission power variation amount;
And maintaining the current tuner state when the first transmission power variation is greater than the second transmission power variation.
16. The method of claim 15,
Changing the second transmission power change amount to a next tuner state when the second transmission power change amount is larger than the first transmission power change amount;
Comparing the third transmission power variation amount of the next tuner state with the fourth transmission power variation amount;
Further comprising: maintaining the current tuner state when the third transmission power variation is greater than the fourth transmission power variation.
17. The method of claim 16,
And changing the fourth transmission power change amount to the next tuner state when the fourth transmission power change amount is larger than the third transmission power change amount.
11. The method of claim 10,
Wherein the determining the power control information and the uplink scheduling information comprises:
Receiving the power control information and the uplink scheduling information from a base station;
And extracting the power control information and the uplink scheduling information from the received signal.
12. The method of claim 11,
Wherein the power control information is a TPC (Transmit Power Control) command.
12. The method of claim 11,
Wherein the uplink scheduling information includes at least one of modulation and coding scheme (MCS) information, a number of allocated resource blocks (RBs), a transmission mode, and channel format information.
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US10700717B1 (en) 2019-03-19 2020-06-30 Samsung Electro-Mechanics Co., Ltd. Band selection switch circuit and amplifier
KR20200128692A (en) * 2020-07-21 2020-11-16 난징 즈진 테크놀로지 이노베이션 서비스 센터 Smart debugging system and method for debugging medium frequency matching network
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US8614646B2 (en) * 2008-03-14 2013-12-24 Qualcomm Incorporated Adaptive tunable antennas for wireless devices
US8971826B2 (en) * 2012-02-22 2015-03-03 Google Technology Holdings, LLC Antenna element as capacitive proximity/touch sensor for adaptive antenna performance improvement
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KR20190086508A (en) * 2016-11-17 2019-07-22 콘티넨탈 오토모티브 프랑스 A method of detecting a user's intention to lock or unlock a vehicle door and related detection device
US10700717B1 (en) 2019-03-19 2020-06-30 Samsung Electro-Mechanics Co., Ltd. Band selection switch circuit and amplifier
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