US 12,114,366 B2
Telecommunications apparatus using a first random access procedure and a second random access procedure
Brian Alexander Martin, Basingstoke (GB); Yuxin Wei, Basingstoke (GB); Anders Berggren, Lund (SE); Vivek Sharma, Basingstoke (GB); and Hideji Wakabayashi, Basingstoke (GB)
Assigned to SONY GROUP CORPORATION, Tokyo (JP); and SONY MOBILE COMMUNICATIONS INC., Tokyo (JP)
Filed by Sony Group Corporation, Tokyo (JP); and Sony Mobile Communications Inc., Tokyo (JP)
Filed on May 1, 2023, as Appl. No. 18/309,840.
Application 18/309,840 is a continuation of application No. 17/479,060, filed on Sep. 20, 2021, granted, now 11,653,390.
Application 17/479,060 is a continuation of application No. 16/476,108, granted, now 11,129,201, issued on Sep. 21, 2021, previously published as PCT/EP2018/050239, filed on Jan. 5, 2018.
Claims priority of application No. 17150585 (EP), filed on Jan. 6, 2017.
Prior Publication US 2023/0269784 A1, Aug. 24, 2023
Int. Cl. H04W 74/0833 (2024.01)
CPC H04W 74/0833 (2013.01) 15 Claims
OG exemplary drawing
 
1. A method of transmitting data in a telecommunications system comprising a terminal and a base station, the terminal configured to use a first random access procedure and a second random access procedure for the transmission of the data to the base station, wherein according to the first random access procedure, the terminal initiates the first random access procedure by transmitting a message comprising the data and a random access preamble, and according to the second random access procedure, the terminal only transmits the data after receiving a random access response, the method comprising:
determining, by the terminal, whether transmission of a first random access request message in accordance with the first random access procedure has been unsuccessful, the first random access request message comprising at least part of the data and a first preamble;
transmitting, by the terminal in a case that the determining indicates that the transmission in accordance the first random access procedure has been unsuccessful, a second random access request message to the base station in accordance with the second random access procedure, the second random access request message comprising a second preamble;
and
receiving, by the terminal from the base station in response to the random access request message and in a case that the network experiences congestion, a random access response message comprising an indicator instructing the terminal to transmit in accordance with the second random access procedure, wherein
the determining includes determining that the first random access procedure is unsuccessful in a case that the terminal receives the indicator from the base station.