Abstract: Apparatuses, systems, and methods for estimating a location of a communication device in an internal environment are described. In one method, a number of movement units made while a mobile terminal moves from a first location to a second location is detected and the location of the mobile terminal is estimated based on the number of detected movement units and a location interpolation scheme.

Abstract: An apparatus and method for matching antenna impedance in a mobile station are provided. In implementation, a mobile station receives power control information including information for controlling transmit power of the mobile station, generates matching control information for antenna impedance matching based on the received power control information, and performs antenna impedance matching depending on the generated matching control information.

Abstract: A method of operating a first terminal is provided. The method includes detecting a signal pattern according to motion of the first terminal by a sensor included in the first terminal, wherein the signal pattern corresponds to a pattern of wireless channel quality between the first terminal and a second terminal; predicting the wireless channel quality between the first terminal and the second terminal using the signal pattern detected by the sensor; and allocating a resource for transmitting data to the second terminal on the basis of the predicted channel quality.

Abstract: A method of using subscriber identification information stored in mobile user equipment (UE) to connect to a communication service over a public wireless network in the UE, establishing a communication link between the UE and a device, generating network access information (NAI) associated with the communication service in the UE, and sending the NAI from the UE to the device via the communication link. The method further comprises connecting the communication service in the device using the NAI and terminating the connection of the communication service in the UE.

Abstract: A receiving apparatus in a wireless communication system is provided. The receiving apparatus includes a first interference cancellation unit configured to cancel interference from a received signal that is received through an antenna according to a first scheme, a second interference cancellation unit configured to cancel interference from the received signal that is received through the antenna according to a second scheme, and a combination unit configured to combine the signal from which interference is cancelled according to the first scheme and the signal from which interference is cancelled according to the second scheme.

Abstract: A method and apparatus are provided for extracting interference signal information. The method includes demodulating control channel signals received from serving and adjacent cells; decoding the control channel signals received from the serving cell to extract control information; decoding the control channel signals received from the adjacent cell; extracting, at each subframe, from the decoded control channel signals received from the adjacent cell, a terminal ID of the adjacent cell; accumulating the extracted terminal IDs; filtering only a control channel signal from among the control channel signals received from the adjacent cell corresponding to a terminal ID having an accumulation count that is greater than or equal to a threshold; determining a reliability value of the filtered control channel signal; identifying the filtered control channel signal as a first interference signal, based on the reliability value; and extracting interference signal information based on the first interference signal.

Abstract: A method and apparatus are provided for extracting interference signal information. The method includes demodulating control channel signals received from serving and adjacent cells; decoding the control channel signals received from the serving cell to extract control information; decoding the control channel signals received from the adjacent cell; extracting, at each subframe, from the decoded control channel signals received from the adjacent cell, a terminal ID of the adjacent cell; accumulating the extracted terminal IDs; filtering only a control channel signal from among the control channel signals received from the adjacent cell corresponding to a terminal ID having an accumulation count that is greater than or equal to a threshold; determining a reliability value of the filtered control channel signal; identifying the filtered control channel signal as a first interference signal, based on the reliability value; and extracting interference signal information based on the first interference signal.

Abstract: A control channel element detection method and apparatus is provided for detecting the Control Channel Elements (CCEs) carrying control information for a mobile station using a Channel Quality Indicator (CQI). A CCE detection method includes searching a current subframe for CCEs, and locating the CCEs carrying control information for the mobile station by decoding the current subframe with variable code rates. Searching for the CCEs includes searching the current subframe for the CCEs carrying the control information for the mobile station while changing a size type of the CCEs according to a result of a comparison between a CQI of the current subframe and a CQI of a previous subframe.

Abstract: An apparatus of a transmitter for signal processing in a wireless communication system is provided. The apparatus includes a first signal processing module set configured to process a first signal transmitted to a base station and a second signal processing module set configured to process a second signal transmitted to a terminal, wherein the first signal processed by the first signal processing module set has a different bandwidth than the second signal processed by the second signal processing module set.

Abstract: A method for operating a terminal in a wireless communication system is provided. The method includes receiving control information masked with an identifier allocated according to a predefined rule for structural allocation, the control information being transmitted from a neighboring base station, and processing the control information by using the identifier.

Abstract: A method for operating a User Equipment (UE) is provided to minimize performance degradation due to a difference between a transmit power for D2B communication and a transmit power for Device to Device (D2D) communication. The method includes transmitting a signal for D2B communication to a Base Station (BS) and a signal for D2D communication to another UE in a first time period, and configuration for the D2D communication, when it is determined there is a difference between a transmit power for the D2B communication and a transmit power for the D2D communication.

Abstract: A communication method of a mobile terminal for reliably performing call redirection between heterogeneous or homogeneous mobile communication systems is provided. The communication method includes requesting a first base station of a first mobile communication system to establish a call connection, receiving information about a first frequency of an adjacent base station for call redirection from the first base station in response to the call connection request, searching for one or more frequencies for the call redirection using the information about the first frequency and information about a second frequency of at least one second mobile communication system, selecting a frequency for the call redirection from among the searched frequencies, and sending a call connection request to a second base station using the selected frequency.

Abstract: A device and a method for saving power in a mobile electronic device are provided. A mobile electronic device includes a plurality of antennas and a transceiver, wherein the transceiver includes a control unit configured to switch to a low power mode to operate in the low power mode, or to operate at least one of the plurality of antennas in the low power mode when a data non-transmission period occurs for a predetermined time in an active state.

Abstract: A receiving apparatus in a wireless communication system is provided. The receiving apparatus includes a first interference cancellation unit configured to cancel interference from a received signal that is received through an antenna according to a first scheme, a second interference cancellation unit configured to cancel interference from the received signal that is received through the antenna according to a second scheme, and a combination unit configured to combine the signal from which interference is cancelled according to the first scheme and the signal from which interference is cancelled according to the second scheme.

Abstract: A method for decoding a channel signal in a signal reception apparatus is provided. The method includes performing a block decoding operation on a channel signal block, and if the block decoding for the channel signal block fails, re-performing a block decoding operation on the channel signal block using a preset pattern.

Abstract: A power control method for controlling a bias voltage of a power amplifier in a transmitting device having the power amplifier is provided. The power control method includes estimating a Peak-to-Average Power Ratio (PAPR) during signal transmission using basis information that is configured for communication in the transmitting device and controlling a bias voltage of the power amplifier based on the estimated PAPR.

Abstract: A method for transmitting a Channel Quality Indicator (CQI) by a CQI transmission apparatus in a communication system is provided. The method includes generating a CQI based on a CQI metric generated using a CQI_offset compensation value, and transmitting the CQI to a CQI reception apparatus, wherein the CQI_offset compensation value is generated using a CQI_offset and wherein a CQI_offset control value, and the CQI_offset is generated using Acknowledgement (Ack)/Non-Acknowledgement (Nack) information for a transmitted transport block.

Abstract: An apparatus and method for matching antenna impedance in a mobile station are provided. In implementation, a mobile station receives power control information including information for controlling transmit power of the mobile station, generates matching control information for antenna impedance matching based on the received power control information, and performs antenna impedance matching depending on the generated matching control information.

Abstract: A channel estimation method and apparatus using a self-tracking algorithm is provided for improving channel estimation accuracy. The channel estimation apparatus of a mobile terminal includes a receiver for converting a received radio signal into a baseband signal, a match filter for converting the baseband signal into a digital signal including at least two samples, a channel estimator for buffering the samples, for analyzing multipath signals to predict a maximum power position and multipath energy, and for estimating a channel by selecting a multi-tap at the maximum power position through a slew control, an equalization controller for calculating an equalization tap gain using the multi-tap selected by the channel estimator, and an equalizer for compensating for distortion in the samples output by the channel estimator using the equalization tap gain calculated by the equalization controller.

Abstract: An equalizer based receiver operation method and apparatus in a mobile communication system are provided. The method includes estimating a channel for a multi path receive signal, analyzing a delay profile of a multi path channel, and selecting a tap position from a plurality of tap positions of an equalizer depending on the analyzed delay profile.