Methods for transmitting uplink signal and downlink signal, UE and base station

A method performed by a base station in a wireless communication system, the method comprising:

• transmitting, to a terminal, configuration information including information on at least one reference signal to be used for identifying at least one candidate beam for beam failure recovery and information on a search space for a beam failure recovery response;
• receiving, from the terminal, a random access preamble for a beam failure recovery request, based on a resource corresponding to a reference signal selected by the terminal of which a reference signal received power (RSRP) is greater than a predetermined threshold from among the at least one reference signal;
• and
• transmitting the beam failure recovery response on a downlink control channel based on the search space identified by the information on the search space for the beam failure recovery response,
• wherein the resource is identified, by the terminal, based on an association between the at least one reference signal and at least one beam failure recovery request resource.

A terminal for transmitting a beam failure recovery request, the terminal comprising:

• a transceiver;
• and
• a processor coupled with the transceiver and configured to:
• receive, from a base station, configuration information including information on at least one reference signal to be used for identifying at least one candidate beam for beam failure recovery and information on a search space for a beam failure recovery response,
• select a reference signal of which reference signal received power (RSRP) is greater than a predetermined threshold from among the at least one reference signal,
• identify a resource corresponding to the selected reference signal based on an association between the at least one reference signal and at least one beam failure recovery request resource,
• transmit, to the base station, a random access preamble for a beam failure recovery request based on the identified resource,
• monitor a downlink control channel based on the search space identified by the information on the search space for the beam failure recovery response, and
• receive, from the base station, the beam failure recovery response on the downlink control channel.

A base station for receiving a beam failure recovery request, the base station comprising:

• a transceiver;
• and
• a processor coupled with the transceiver and configured to:
• transmit, to a terminal, configuration information including information on at least one reference signal to be used for identifying at least one candidate beam for beam failure recovery and information on a search space for a beam failure recovery response,
• receive, from the terminal, a random access preamble for a beam failure recovery request, based on a resource corresponding to a reference signal selected by the terminal of which a reference signal received power (RSRP) is greater than a predetermined threshold from among the at least one reference signal, and
• transmit the beam failure recovery response on a downlink control channel based on the search space identified by the information on the search space for the beam failure recovery response,
• wherein the resource is identified, by the terminal, based on an association between the at least one reference signal and at least one beam failure recovery request resource.