FIELD: communication technology.
SUBSTANCE: invention relates to the field of communication technology. The service base station transmits an alarm indicating random access to the terminal. The random access indication alarm is configured to indicate to the terminal of the target antenna panel and/or target beam for transmitting the random access preamble. The terminal receives the random access indication alarm and determines, in accordance with the random access indication alarm, the target antenna panel and/or target beam for transmitting the random access preamble.
EFFECT: ability to provide a high proportion of successful random access attempts in the cellular handover process.
15 cl, 11 dwg
