Method and apparatus for transmitting and receiving uplink random access channel slot in a wireless communication system using beamforming
AssigneeSamsung Electronics Co., Ltd.
InventorsYung-Soo Kim, Hyun-Il Yoo
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Abstract
A method and apparatus for transmitting and receiving a signal of Random Access Channel (RACH) in a wireless communication system using beamforming are provided. The reception method includes receiving the signal through each transmission beam of a transmitter from a transmitter, transmitted in each transmission beam by the transmitter, the signal including as many repeated symbols as a total number of reception beams of a receiver, and detecting symbols by switching to reception beams corresponding to the symbols included in the signal during reception of the signal.
Claims20
A method for receiving a signal by a base station in a wireless communication system, the method comprising:
- transmitting a synchronization signal and control information for uplink transmission;
- receiving a random access signal transmitted through at least one transmission beam of a mobile station by switching a plurality of reception beams of the base station, the random access signal comprising a plurality of symbols corresponding to a number of the plurality of reception beams;
- detecting a symbol corresponding to each of the plurality of reception beams from the plurality of symbols comprised in the random access signal;
- and
- if a signal strength of the detected symbol is equal to or larger than a predetermined threshold, transmitting, to the mobile station, information related to a reception beam corresponding to the detected symbol among the plurality of reception beams.
A base station for receiving a signal in a wireless communication system, the base station comprising:
- a transceiver configured to transmit a synchronization signal and control information for uplink transmission, and receive a random access signal through at least one transmission beam of a mobile station by switching a plurality of reception beams of the base station, the random access signal comprising a plurality of symbols corresponding to a number of the plurality of reception beams;
- and
- a controller configured to:
- detect a symbol corresponding to each of the plurality of reception beams from the plurality of symbols comprised in the random access signal, and
- if a signal strength of the detected symbol is equal to or larger than a predetermined threshold, control the transceiver to transmit, to the mobile station, information related to a reception beam corresponding to the detected symbol among the plurality of reception beams.
A method for transmitting a signal by a mobile station in a wireless communication system, the method comprising:
- receiving, from a base station, a synchronization signal and control information for uplink transmission;
- generating a random access signal based on the control information, the random access signal comprising a plurality of symbols corresponding to a number of a plurality of reception beams of the base station;
- transmitting, to the base station, the random access signal through at least one transmission beam of the mobile station;
- and
- receiving, from the base station, information related to a reception beam corresponding to a detected symbol among the plurality of reception beams, wherein a signal strength of the detected symbol is equal to or larger than a predetermined threshold.
A mobile station for transmitting a signal in a wireless communication system, the mobile station comprising:
- a transceiver configured to receive, from a base station, a synchronization signal and control information for uplink transmission;
- and
- a controller configured to:
- generate a random access signal based on the control information, the random access signal comprising a plurality of symbols corresponding to a number of a plurality of reception beams of the base station, and
- control the transceiver to transmit the random access signal to the base station through at least one transmission beam of the mobile station,
- wherein the transceiver receives, from the base station, information related to a reception beam corresponding to a detected symbol among the plurality of reception beams, wherein a signal strength of the detected symbol is equal to or larger than a predetermined threshold.
Dependencies are inferred from the claim text.