US 12,273,926 B2
Random access method and terminal device
Xin You, Dongguan (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Jun. 24, 2022, as Appl. No. 17/849,509.
Application 17/849,509 is a continuation of application No. PCT/CN2019/129343, filed on Dec. 27, 2019.
Prior Publication US 2022/0330347 A1, Oct. 13, 2022
Int. Cl. H04W 74/0833 (2024.01); H04W 56/00 (2009.01)
CPC H04W 74/0833 (2013.01) [H04W 56/0045 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A random access method, wherein the method comprises:
determining, by a terminal device in a non-terrestrial network (NTN) system, a target timing advance (TA) in a plurality of TAs according to first information, wherein the first information is associated with an area where the terminal device is located; and
sending, by the terminal device, a first message in a random access procedure to a network device according to the target TA;
wherein a cell where the terminal device is located comprises a plurality of areas, the plurality of TAs respectively correspond to the plurality of areas, the first information comprises a target area where the terminal device is located in the plurality of areas, and the terminal device is a terminal device with a positioning capability, wherein the plurality of areas are coverage areas of a plurality of synchronization signal blocks (SSBs) with different SSB indexes respectively;
wherein the determining, by the terminal device, the TA in the plurality of TAs according to the first information comprises:
receiving, by the terminal device, indication information sent by the network device. wherein the indication information is used for indicating a corresponding relationship between the plurality of TAs and the plurality of areas;
determining, by the terminal device, that a TA corresponding to the target area is the target TA according to the target area and the corresponding relationship;
wherein the method further comprises:
acquiring, by the terminal device, information of the plurality of areas from the network device;
determining, by the terminal device, a position of the terminal device based on the positioning capability;
determining, by the terminal device, the target area based on the information of the plurality of areas and the position of the terminal device.