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1. (WO2018202536) ON MULTIPLE PRACH PREAMBLES AND RANDOM ACCESS RESPONSES

Pub. No.:    WO/2018/202536    International Application No.:    PCT/EP2018/060712
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Fri Apr 27 01:59:59 CEST 2018
IPC: H04W 74/08
H04W 72/04
Applicants: NOKIA TECHNOLOGIES OY
Inventors: HAKOLA, Sami-Jukka
FARAG, Emad
TURTINEN, Samuli Heikki
TORMALEHTO, Jukka Valtteri
KAIKKONEN, Jorma Johannes
Title: ON MULTIPLE PRACH PREAMBLES AND RANDOM ACCESS RESPONSES
Abstract:
A method comprising, detecting, by a base station in a wireless communication system, within an RAR window, at least one of multiple first messages from a plurality of user equipments, wherein the plurality of user equipments is permitted to transmit multiple first messages within the RAR window, and wherein each first message comprises a PRACH preamble; in response to receiving at least one PRACH preamble in the at least one of multiple first messages, transmitting at least one second message comprising an RAR downlink channel for each preamble received; receiving at least one third message, from at least one user equipment of the plurality of user equipments, comprising a beam connection request and transmitting at least one fourth message to the at least one user equipment on the requested beam.