Method and device in communication node used for wireless communication

A method for a second-type communication node in wireless communications, comprising:

• transmitting first information;
• transmitting second information;
• and
• receiving a first radio signal;
• wherein the first information is used to determine a first transmission timing adjustment, the second information is used to determine a second transmission timing adjustment, and a start time for a transmission of the first radio signal is related to the first transmission timing adjustment and the second transmission timing adjustment;
• a minimum step-size corresponding to the first transmission timing adjustment is not equal to a minimum step-size corresponding to the second transmission timing adjustment;
• the first information, the second information and the first radio signal are all transmitted through an air interface;
• the second information comprises all or part of a Random Access Response (RAR), or the second information comprises all or part of a Timing Advance (TA) update;
• when the minimum step-size corresponding to the first transmission timing adjustment and the minimum step-size corresponding to the second transmission timing adjustment are converted into a same unit of measurement, the minimum step-size corresponding to the first transmission timing adjustment is smaller than the minimum step-size corresponding to the second transmission timing adjustment the minimum step-size δ2 corresponding to the second transmission timing adjustment is obtained by δ2=15/SC×16×64 Ts, wherein the SC is a subcarrier spacing of subcarriers occupied by the first radio signal, the Ts is equal to 1/(64×30.72×106) second.

A first-type communication node for wireless communications, comprising:

• a first receiver, receiving first information;
• a second receiver, receiving second information;
• and
• a first transmitter, transmitting a first radio signal;
• wherein the first information is used to determine a first transmission timing adjustment, the second information is used to determine a second transmission timing adjustment, and a start time for a transmission of the first radio signal is related to the first transmission timing adjustment and the second transmission timing adjustment;
• a minimum step-size corresponding to the first transmission timing adjustment is not equal to a minimum step-size corresponding to the second transmission timing adjustment;
• the first information, the second information and the first radio signal are all transmitted through an air interface;
• the second information comprises all or part of a Random Access Response (RAR), or the second information comprises all or part of a Timing Advance (TA) update;
• when the minimum step-size corresponding to the first transmission timing adjustment and the minimum step-size corresponding to the second transmission timing adjustment are converted into a same unit of measurement, the minimum step-size corresponding to the first transmission timing adjustment is smaller than the minimum step-size corresponding to the second transmission timing adjustment the minimum step-size 62 corresponding to the second transmission timing adjustment is obtained by δ2=15/SC×16×64Ts, wherein the SC is a subcarrier spacing of subcarriers occupied by the first radio signal, the Ts is equal to 1/(64×30.72×106) second.