US 12,250,731 B2
Contention resolution in random access procedure
Chunli Wu, Beijing (CN); Samuli Turtinen, Ii (FI); and Benoist Sebire, Tokyo (JP)
Assigned to NOKIA TECHNOLOGIES OY, Espoo (FI)
Appl. No. 17/431,674
Filed by NOKIA TECHNOLOGIES OY, Espoo (FI)
PCT Filed Feb. 22, 2019, PCT No. PCT/CN2019/075807
§ 371(c)(1), (2) Date Aug. 17, 2021,
PCT Pub. No. WO2020/168532, PCT Pub. Date Aug. 27, 2020.
Prior Publication US 2022/0124830 A1, Apr. 21, 2022
Int. Cl. H04W 74/0833 (2024.01); H04W 72/1263 (2023.01); H04W 72/23 (2023.01); H04W 74/00 (2009.01)
CPC H04W 74/0841 (2013.01) [H04W 72/1263 (2013.01); H04W 72/23 (2023.01); H04W 74/002 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A terminal device, comprising:
at least one processor; and
a memory coupled to the at least one processor, the memory storing instructions therein, the instructions, when executed by the at least one processor, causing the terminal device to:
transmit a random access request to a network device on a random access channel of a plurality of random access channels, the random access request comprising at least one preamble for a random access procedure and a cell radio network temporary identifier of the terminal device, wherein the cell radio network temporary identifier is common to the plurality of random access channels, wherein the plurality of random access channels are useable by one or more terminal devices to transmit preambles for random access procedures to the network device, and wherein the random access request comprises a message A (MsgA) of a two-step random access;
receive, from the network device and during a configured time window, a random access response to the random access request on a downlink control channel addressed to the cell radio network temporary identifier;
in response to the receiving, determine that the random access procedure of the terminal device is successful; and
in response to the random access response comprising a further indication indicating there is no further random access response to the random access request, stop monitoring a further random access response before an expiry of the time window for the random access response.