Patent ID: 11968718
Assignee: NOKIA TECHNOLOGIES OY
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. An apparatus, comprising:
at least one processor; and
at least one memory including computer program code,
wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to
indicate to a user equipment to select the at least one first beam-specific random access channel parameter, wherein the at least one beam-specific random access channel parameter comprises a beam reception level reference threshold,
wherein the indicating cause the user equipment to utilize the at least one first beam-specific random access channel parameter to determining one or more beam indices of a cell fulfilling at least one criteria utilizing the beam reception level reference threshold and select first beam-specific random access channel preamble based on the one or more beam indices;
receive a first random access with the first beam-specific random access preamble; and
communicate a beam-specific backoff indicator for the one of the one or more beam indices in a random access response such that, when configured by the apparatus, by the beam-specific backoff indicator to prohibit the user equipment from sending a random access channel signal using the first beam-specific random access channel preamble for a predefined time period for the one of the one or more beam indices, by receiving from the user equipment a second random access utilizing a second beam-specific random access channel preamble for another one of the one or more beam indices based on a reception level of the another one of the one or more beam indices being equal to or higher than the beam reception level reference threshold.