Abstract:
Methods, a Base Station (BS), and a User Equipment (UE) in a wireless communication system for transmitting and receiving control information are provided. The method for transmitting control information by a BS in a wireless communication system includes receiving information related to a signal transmitted by a second BS that the second BS which is a neighboring BS of the first BS, determining whether a second UE using an identical resource to that used by a first UE included in a cell of the first BS exists within a cell of the second BS based on the received information, when the second UE exists, generating control information for controlling a signal transmitted to the second UE by the second BS based on the received information, and transmitting the generated control information to the first UE through a control channel.
Abstract:
Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.
Abstract:
Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.
Abstract:
Methods and apparatuses are provided for operating a first terminal. A motion of the first terminal is determined by using sensor data from at least one sensor of the first terminal. A prediction for a channel quality between the first terminal and a second terminal is performed based on the determined motion of the first terminal. At least one first time duration in which the predicted channel quality is greater than or equal to a threshold value and at least one second time duration in which the predicted channel quality is less than the threshold value are determined. Data is transmitted to the second terminal via a first transmission power, where the first transmission power is set for the at least one first time duration.
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:
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 operating a user equipment for avoiding paging missing in a mobile communication system is provided. The method of operating a user equipment includes performing an area update process caused by a registration area change, performing a reselection of a previous registration area after performing the area update process, and attempting to receive a paging in the previous registration area.
Abstract:
Provided is an interference cancellation method by a User Equipment (UE) in a cellular communication system. The method includes receiving a signal including a desired signal and an interference signal from at least one base station; determining a universal constellation diagram based on at least one of a transmission parameter of the desired signal and a transmission parameter of the interference signal; blindly detecting an additional transmission parameter of the interference signal using the determined universal constellation diagram; and cancelling the interference signal from the received signal using the detected additional transmission parameter.
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:
Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.