Method for generating preamble, method for configuring preamble and equipment thereof, random access method, device, user equipment and base station

A method performed by a base station, the method comprising:

• generating first configuration information for a random access, the first configuration information including a first root sequence index and a first cyclic shift value;
• transmitting, to a user equipment (UE), the first configuration information;
• generating second configuration information for a beam failure recovery, the second configuration information including at least one of a second root sequence index and a second cyclic shift value;
• transmitting, to the UE, the second configuration information to configure a preamble for the beam failure recovery;
• and
• receiving the preamble for the beam failure recovery,
• wherein the preamble is generated based on the first configuration information and at least one of the second root sequence index and the second cyclic shift value included in the second configuration information, in case that the second configuration information includes at least one of the second root sequence index and the second cyclic shift value.

A user equipment (UE), the UE comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to control to:
• receive, from a base station, first configuration information for a random access, the first configuration information including a first root sequence index and a first cyclic shift value,
• receive, from the base station, second configuration information for a beam failure recovery, the second configuration information including at least one of a second root sequence index and a second cyclic shift value,
• generate a preamble for the beam failure recovery based on the first configuration information and at least one of the second root sequence index and the second cyclic shift value included in the second configuration information, in case that the second configuration information includes at least one of the second root sequence index and the second cyclic shift value, and
• transmit the preamble for the beam failure recovery.

A base station, the base station comprising:

• a transceiver;
• and
• a controller coupled with the transceiver and configured to control to:
• generate first configuration information for a random access, the first configuration information including a first root sequence index and a first cyclic shift value,
• transmit, to a user equipment (UE), the first configuration information,
• generate second configuration information for a beam failure recovery, the second configuration information including at least one of a second root sequence index and a second cyclic shift value,
• transmit, to the UE, the second configuration information to configure a preamble for the beam failure recovery, and
• receive the preamble for the beam failure recovery,
• wherein the preamble is generated based on the first configuration information and at least one of the second root sequence index and the second cyclic shift value included in the second configuration information, in case that the second configuration information includes at least one of the second root sequence index and the second cyclic shift value.