US 12,256,424 B2
Method and device for information transmission
Weijie Xu, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Jan. 22, 2021, as Appl. No. 17/156,480.
Application 17/156,480 is a continuation of application No. PCT/CN2019/097913, filed on Jul. 26, 2019.
Claims priority of application No. 201810844630.5 (CN), filed on Jul. 27, 2018.
Prior Publication US 2021/0144754 A1, May 13, 2021
Int. Cl. H04W 74/00 (2009.01); H04L 1/18 (2023.01); H04L 1/1812 (2023.01); H04W 74/08 (2024.01); H04W 74/0833 (2024.01)
CPC H04W 74/006 (2013.01) [H04L 1/1812 (2013.01); H04W 74/0833 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for information transmission, comprising:
receiving, by a terminal device, first downlink control information (DCI) from a network device after the terminal device has sent a first preamble and a first uplink data channel to the network device; and
determining, by the terminal device, the following based on a radio network temporary identity (RNTI) used for scrambling the first DCI:
a type of a random access channel (RACH) process, including a 2-step RACH process and a 4-step RACH process;
a content of the first DCI;
a transmission mechanism for first data scheduled by the first DCI; and
information carried in the first data scheduled by the first DCI,
wherein, when the RNTI used for scrambling the first DCI is a first RNTI, the terminal device determines:
the type of the RACH process is the 2-step RACH process;
the content of the first DCI at least comprises information used for hybrid automatic repeat request transmission;
transmission of the first data scheduled by the first DCI supports hybrid automatic repeat request transmission; and
the information carried in the first data scheduled by the first DCI comprises at least one of the following: contention resolution information, radio resource control (RRC) connection establishment information, or RRC connection reestablishment information, and
wherein, when the RNTI used for scrambling the first DCI is a second RNTI, the terminal device determines:
the type of the RACH process is the 4-step RACH process;
the content of the first DCI does not comprise information used for hybrid automatic repeat request transmission;
transmission of the first data scheduled by the first DCI does not support hybrid automatic repeat request transmission; and
the information carried in the first data scheduled by the first DCI comprises at least one of a back indicator, a random access preamble identifier (RAPID), or a media access control (MAC) random access response (RAR).