Method and apparatus for determining timing advance, and device and medium

A communication terminal device, comprising:

• at least one processor;
• a memory configured to store at least one program, wherein
• the at least one program, when executed by the at least one processor, causes the at least one processor to implement a method for determining a timing advance comprising:
• obtaining, by a terminal device, timing advance (TA) list information, wherein the TA list information is sent to the terminal device by a base station or is configured by default to be stored in the terminal device, and the TA list information indicates at least one TA list, each TA list comprising at least one TA value;
• obtaining, by the terminal device, a target TA value according to the TA list information;
• and
• adjusting, by the terminal device, a TA for uplink channel transmission using the target TA value;
• wherein in response to the TA list information indicating at least two TA lists, obtaining, by the terminal device, a target TA value according to the TA list information comprises:
• obtaining, by the terminal device, a target TA list according to the TA list information;
• and
• obtaining, by the terminal device, the target TA value from the target TA list.