Samsung Electronics Co., Ltd.

Jonghyeuk Lee

Hyuncheol Kim

Hayoung Yang

Seijoon Shim

Soongyoon Choi

The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data rate, after a 4G communication system such as an LTE system. The present invention relates to a method for guaranteeing a quality of a service in a wireless communication system. Specifically, a method for a base station according to an embodiment of the present invention comprises the steps of: receiving a PRACH from a terminal; identifying a transmission pattern of the PRACH for a symbol group including a plurality of symbols transmitted in a single tone; acquiring information of phase difference between tones, in which the PRACH has been received, according to multiple intervals between symbol groups on the basis of the transmission pattern of the PRACH; estimating a phase offset on the basis of the information of phase difference; and generating uplink timing information for transmission to the terminal, by using a timing offset converted from the estimated phase offset.

Method for performing uplink synchronization in wireless communication system

The present disclosure relates to a method and apparatus for transmitting and receiving signals in a wireless communication system. According to an embodiment of the present disclosure, random access signals including preamble sequences transmitted from a user equipment (UE) may be detected during a plurality of observation periods. A temporary timing advance (TA) value may be determined based on a preamble sequence of a random access signal having greater signal strength among the plurality of random access signals detected in the plurality of observation periods. A final TA value may be acquired based on the temporary TA value according to a result of comparison between the strengths of the random access signals received in the plurality of observation periods and a preset threshold value. A random access response signal including the final TA value may be transmitted to the UE.

Method and apparatus for transmitting and receiving signals in wireless communication system

Provided is a power control method of a transmitter. The method may include: generating a first aggregated carrier signal by aggregating multiple carrier signals; determining whether at least one peak exceeding a preset threshold is detected among the peaks of the first aggregated carrier signal; generating, if at least one peak exceeding the preset threshold is detected, at least one cancellation signal based on the detected at least one peak; and mapping the at least one cancellation signal to reserved subcarriers. It is possible to reduce the PAPR at the side of an amplifier by applying a tone reservation technique to multicarrier signals.

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Hwaseong-si, South Korea

Jonghyeuk Lee