US 12,324,019 B2
Method and device for random access
Jianhua Liu, Guangdong (CN); Hua Xu, Ottawa (CA); and Ning Yang, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Nov. 3, 2021, as Appl. No. 17/518,578.
Application 17/518,578 is a continuation of application No. 16/476,030, granted, now 11,197,326, previously published as PCT/CN2017/070329, filed on Jan. 5, 2017.
Prior Publication US 2022/0061103 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/0833 (2024.01); H04W 68/00 (2009.01); H04W 72/542 (2023.01); H04W 72/563 (2023.01); H04W 74/02 (2009.01)
CPC H04W 74/0833 (2013.01) [H04W 68/005 (2013.01); H04W 72/542 (2023.01); H04W 72/563 (2023.01); H04W 74/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for random access, comprising:
determining, by a terminal device, a first basic parameter set to be used for transmitting a first message during a random access procedure, wherein the first basic parameter set comprises a subcarrier spacing and a cyclic prefix (CP); and
receiving, by the terminal device using the first basic parameter set, the first message transmitted by an access network device,
wherein the determining, by the terminal device, the first basic parameter set to be used for transmitting the first message during the random access procedure comprises:
determining a frequency band of a frequency domain resource to be used for transmitting the first message;
determining a correspondence between a plurality of frequency bands and a plurality of subcarrier spacings; and
determining the subcarrier spacing according to the frequency band and the correspondence,
wherein the first message is a radio resource control (RRC) contention resolution message (MSG4), the MSG4 is used to indicate a second basic parameter set for data transmission which is carried out by the terminal device according to the second basic parameter set, and the second basic parameter set comprises a length of a signal prefix, wherein the length of the signal prefix refers to whether a CP of a signal uses a normal CP or an extended CP.