US 11,973,559 B2
Retransmission of random access message based on control message from a base station
Basuki Priyanto, Lund (SE); Rickard Ljung, Helsingborg (SE); Shin Horng Wong, Weybridge (GB); and Martin Beale, Weybridge (GB)
Assigned to Sony Corporation, Tokyo (JP)
Appl. No. 16/637,743
Filed by Sony Corporation, Tokyo (JP)
PCT Filed Aug. 10, 2018, PCT No. PCT/EP2018/071788
§ 371(c)(1), (2) Date Feb. 8, 2020,
PCT Pub. No. WO2019/030390, PCT Pub. Date Feb. 14, 2019.
Claims priority of application No. 1730210-0 (SE), filed on Aug. 11, 2017.
Prior Publication US 2020/0212987 A1, Jul. 2, 2020
Int. Cl. H04B 7/06 (2006.01); H04B 7/0408 (2017.01); H04L 1/1867 (2023.01); H04W 24/10 (2009.01); H04W 52/36 (2009.01); H04W 74/08 (2009.01); H04W 74/0833 (2024.01)
CPC H04B 7/0695 (2013.01) [H04B 7/0408 (2013.01); H04B 7/0617 (2013.01); H04L 1/189 (2013.01); H04L 1/1896 (2013.01); H04W 24/10 (2013.01); H04W 52/362 (2013.01); H04W 74/0833 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of operating a communication device, comprising:
receiving, from an associated base station of an associated wireless network, a control message indicative of at least one retransmission parameter for a random access message that comprises a random access preamble; and
transmitting, on a plurality of beams selected in accordance with the at least one retransmission parameter, a plurality of retransmissions of the random access message,
wherein transmitting of a successive one of the plurality of retransmissions is conditional on an unsuccessful reception of a preceding one of the plurality of retransmissions,
wherein the plurality of retransmissions of the random access message are transmitted at a plurality of transmission power levels, wherein the plurality of transmission power levels are selected based on a quantity of the plurality of beams,
wherein at least one of the quantity of the plurality of transmission power levels or a step size of the plurality of transmission power levels is determined based on the quantity of the plurality of beams.