Patent ID: 11881913
Assignee: SONY GROUP CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An electronic device for a terminal device side in a wireless communication system, the electronic device configured to obtain, by way of dual connectivity, services of a Base Station (BS) that performs beamforming transceiving and another base station in the wireless communication system that does not perform beamforming transceiving, the electronic device comprising a processing circuitry configured to:
obtain, from the another base station, information about a correspondence between groups of plural Synchronization Signal (SS) blocks and individual transmit (TX) beams of the BS;
receive, from the BS, a plurality of SS blocks of the groups of plural SS blocks;
determine a SS block of the received plurality of SS blocks that matches with the electronic device;
based on the information about the correspondence between the groups of plural SS blocks and the individual TX beams of the BS obtained from the another base station, identify a TX beam of the BS used to transmit the determined SS block;
select a random access preamble assigned to the electronic device from a group of random access preambles that correspond to the TX beam of the BS used to transmit the determined SS block; and
transmit the selected random access preamble to the BS via a TX beam of the electronic device as part of a random access process, wherein the transmitted random access preamble indicates the TX beam of the BS used to transmit the determined SS block,
wherein each group of the plural SS blocks includes plural Zadoff-Chu sequences, and
wherein the correspondence between the groups of plural SS blocks and the individual TX beams of the BS comprises:
a correspondence between a first plurality of Zadoff-Chu sequences and a first TX beam of the individual TX beams of the BS; and
a correspondence between a second plurality of Zadoff-Chu sequences and a second TX beam of the individual TX beams of the BS.