Abstract: An operation method of an in-band full duplex (IFD) multiple-input multiple-output (MIMO) transceiver, including a reception part, a transmission part, an analog self-interference (SI) generator, and a self-interference cancellation (SIC) controller, may comprise generating, at the SIC controller, a control signal for analog SIC and digital SIC and outputting the control signal to the reception part and the analog SI generator; cancelling, at the SIC controller, SI of a transmission signal of the transmission part based on the control signal; and cancelling, at the reception part, SI of a signal of the reception part based on the control signal.

Abstract: Provided are a system and method of providing a voice-message call service. A mobile device that performs a call with an external mobile device comprises a control unit configured to obtain text, the text converted from voice data that is exchanged between the mobile device and the external mobile device, during the call between the mobile device and the external mobile device, and obtain input text input to the mobile device and provided text that is received from the external mobile device; and a display unit configured to arrange the text, the input text, and the provided text and display the arranged text, input text, and provided text on a screen of the device, during the call between the mobile device and the external mobile device.

Abstract: Provided is a device and method of providing health status information. The device includes: a device including: a storage configured to store a first image including a face of a user and first health status information extracted from the first image; an imager configured to capture an image; a controller configured to control the imager to capture a second image including the face of the user and to extract second health status information from the captured second image; and a display configured to output the second image and information other than the stored first health status information from among the extracted second health status information.

Abstract: An operating method of a slave node that communicates with a master node in an in-band full duplex (IFD) system may comprise receiving a beacon signal from the master node during a training sequence period; transmitting a first self-interference (SI) training sequence including a first radio frequency (RF)/analog SI training sequence, a first automatic gain control (AGC) sequence, and a first digital SI training sequence to the master node during the training sequence period after the beacon signal is received; calculating a filter factor for canceling an analog SI signal input to the slave node on the basis of the first RF/analog SI training sequence; and canceling the analog SI signal from the first AGC sequence on the basis of the filter factor.

Abstract: An operation method of an in-band full duplex (IFD) transceiving apparatus including a receiving end, a transmitting end, a digital self-interference cancellation (DSIC) processing unit, and a digital SI cancellation unit may comprise generating, by the DSIC processing unit, signal shaping coefficients for wave shaping of a signal of the transmitting end; generating, by the DSIC processing unit, channel estimation coefficients for cancellation of a self-interference signal in a reception signal of the receiving end; forming, by the DSIC processing unit, a transmission signal based on the signal shaping coefficients; and generating, by the DSIC processing unit, a control signal for cancellation of the self-interference signal in the reception signal based on the channel estimation coefficients.

Abstract: An operation method of a terminal in a wireless communication system includes: transmitting uplink (UL) traffic information indicating a size of a UL data signal to a base station; receiving a jamming message generated based on the UL traffic information from the base station; generating an uplink (UL) transmission signal including the UL data signal and a UL jamming signal based on the jamming message; and transmitting the UL transmission signal to the base station. Also, the jamming message indicates a pattern of the UL jamming signal, the UL transmission signal is transmitted in a same frequency band as a frequency band in which a downlink (DL) transmission signal of the base station is received, and the UL jamming signal is transmitted in remaining resources excluding resources occupied by the UL data signal in the frequency band.

Abstract: Provided are a system and method of providing a voice-message call service. A mobile device that performs a call with an external mobile device comprises a control unit configured to obtain text, the text converted from voice data that is exchanged between the mobile device and the external mobile device, during the call between the mobile device and the external mobile device, and obtain input text input to the mobile device and provided text that is received from the external mobile device; and a display unit configured to arrange the text, the input text, and the provided text and display the arranged text, input text, and provided text on a screen of the device, during the call between the mobile device and the external mobile device.

Abstract: Provided are a system and method of providing a voice-message call service. A mobile device that performs a call with an external mobile device comprises a control unit configured to obtain text, the text converted from voice data that is exchanged between the mobile device and the external mobile device, during the call between the mobile device and the external mobile device, and obtain input text input to the mobile device and provided text that is received from the external mobile device; and a display unit configured to arrange the text, the input text, and the provided text and display the arranged text, input text, and provided text on a screen of the device, during the call between the mobile device and the external mobile device.

Abstract: There are provided a method and an apparatus for performing a self-interference cancellation by determining a filter coefficient of an analog filter operated in an analog domain; and canceling self-interference generated in a received signal received by the node by a transmitted signal transmitted from the node, based on the filter coefficient.

Abstract: An operation method of a base station in an IFD scheme may comprise receiving position information of each of a plurality of downlink (DL) terminals and a plurality of uplink (UL) terminals; determining a guard zone corresponding to each of the plurality of DL terminals based on the position information of each of the plurality of DL terminals; determining whether at least one UL terminal is located in the guard zone based on the position information of each of the plurality of UL terminals; determining a scheduling priority of each of the plurality of DL terminals according to whether at least one UL terminal is located in the guard zone; generating DL control information including frequency-time resource allocation information and interference control information based on the determined scheduling priority; and transmitting data signals and the DL control information to the plurality of DL terminals.

Abstract: Provided are a system and method of providing a voice-message call service. A mobile device that performs a call with an external mobile device comprises a control unit configured to obtain text, the text converted from voice data that is exchanged between the mobile device and the external mobile device, during the call between the mobile device and the external mobile device, and obtain input text input to the mobile device and provided text that is received from the external mobile device; and a display unit configured to arrange the text, the input text, and the provided text and display the arranged text, input text, and provided text on a screen of the device, during the call between the mobile device and the external mobile device.

Abstract: Provided are an apparatus and method for transmitting/receiving a signal. The method for transmitting/receiving a signal includes reducing a quantization error in a baseband (BB) analog area with respect to a reception signal, and performing self-interference cancellation (SIC) on a first output signal output from a BB analog circuit unit in a digital area.

Abstract: An operation method of an in-band full duplex (IFD) multiple-input multiple-output (MIMO) transceiver, including a reception part, a transmission part, an analog self-interference (SI) generator, and a self-interference cancellation (SIC) controller, may comprise generating, at the SIC controller, a control signal for analog SIC and digital SIC and outputting the control signal to the reception part and the analog SI generator; cancelling, at the SIC controller, SI of a transmission signal of the transmission part based on the control signal; and cancelling, at the reception part, SI of a signal of the reception part based on the control signal.

Abstract: Provided are a system and method of providing a voice-message call service. A mobile device that performs a call with an external mobile device comprises a control unit configured to obtain text, the text converted from voice data that is exchanged between the mobile device and the external mobile device, during the call between the mobile device and the external mobile device, and obtain input text input to the mobile device and provided text that is received from the external mobile device; and a display unit configured to arrange the text, the input text, and the provided text and display the arranged text, input text, and provided text on a screen of the device, during the call between the mobile device and the external mobile device.

Abstract: Disclosed is an in-band full duplex transceiver. The in-band full duplex transceiver may include a transmitter, a hybrid transformer, and an impedance matching unit. The hybrid transformer may include a first end connected to an antenna, may output a transmitting signal to the antenna, and may output a received signal provided through the antenna to the receiver. The impedance matching unit may include balance networks connected to a second end of the hybrid transformer and matching impedance of the antenna.

Abstract: Provided are a system and method of providing a voice-message call service. A mobile device that performs a call with an external mobile device comprises a control unit configured to obtain text, the text converted from voice data that is exchanged between the mobile device and the external mobile device, during the call between the mobile device and the external mobile device, and obtain input text input to the mobile device and provided text that is received from the external mobile device; and a display unit configured to arrange the text, the input text, and the provided text and display the arranged text, input text, and provided text on a screen of the device, during the call between the mobile device and the external mobile device.

Abstract: A method for a communication link establishing device to establish a communication link in a targeted communication system is provided. A source terminal transmits a source terminal's identification information and threshold value information for selecting a relative angle measurement target to neighboring terminals including a target terminal, and transmits a relative angle measurement request signal to the target terminal and the neighboring terminals. Upon receipt of a response signal for the relative angle measurement request signal from at least one of the neighboring terminals including the target terminal, a communication link with the selected communication target's terminal is established based on the information contained in the response signal.

Abstract: Provided are a system and method of providing a voice-message call service. A mobile device that performs a call with an external mobile device comprises a control unit configured to obtain text, the text converted from voice data that is exchanged between the mobile device and the external mobile device, during the call between the mobile device and the external mobile device, and obtain input text input to the mobile device and provided text that is received from the external mobile device; and a display unit configured to arrange the text, the input text, and the provided text and display the arranged text, input text, and provided text on a screen of the device, during the call between the mobile device and the external mobile device.

Abstract: If a master device in device-to-device direct communication designates an object type of a target to be communicated with, transmits a target discovery request message including the object type of the target to be communicated with to a plurality of neighboring target devices, and receives a target discovery response message from one or more target devices corresponding to the object type of the target to be communicated with among the plurality of target devices, the master device determines one target device among one or more target devices as the target to be communicated with.

Abstract: Provided are a system and method of providing a voice-message call service. A mobile device that performs a call with an external mobile device comprises a control unit configured to obtain text, the text converted from voice data that is exchanged between the mobile device and the external mobile device, during the call between the mobile device and the external mobile device, and obtain input text input to the mobile device and provided text that is received from the external mobile device; and a display unit configured to arrange the text, the input text, and the provided text and display the arranged text, input text, and provided text on a screen of the device, during the call between the mobile device and the external mobile device.