Method and device for use in communication node for random access wireless communications

A second communication node for wireless communications, comprising:

• a second transmitter, to transmit first information and to transmit second information, the first information and the second information being used for determining a first time-frequency resource pool and a second time-frequency resource pool respectively;
• and
• a second receiver, to receive a first signal, the first signal occupying a target time-frequency resource block, the first signal is used for random access;
• wherein the first time-frequency resource pool comprises a positive integer number of first-type time-frequency resource block(s), and the second time-frequency resource pool comprises a positive integer number of second-type time-frequency resource block(s);
• a number of resources occupied in time domain by any one first-type time-frequency resource block in the first time-frequency resource pool is not equal to a number of resources occupied in time domain by any one second-type time-frequency resource block in the second time-frequency resource pool;
• the target time-frequency resource block is one first-type time-frequency resource block comprised in the first time-frequency resource pool, or the target time-frequency resource block is one second-type time-frequency resource block comprised in the second time-frequency resource pool;
• and positioning information of the first communication node is used for determining a time-frequency resource pool to which the target time-frequency resource block belongs between the first time-frequency resource pool and the second time-frequency resource pool;
• an absolute value of a time difference between a start time of transmitting the first signal and a reference time is equal to a first timing adjustment quantity, and a receive timing of the first communication node is used for determining the reference time;
• when the target time-frequency resource block belongs to the first time-frequency resource pool, the first timing adjustment quantity is greater than 0;
• and when the target time-frequency resource block belongs to the second time-frequency resource pool, the first timing adjustment quantity is equal to 0.

A method in a first communication node for wireless communications, comprising:

• receiving first information and receiving second information, the first information and the second information being used for determining a first time-frequency resource pool and a second time-frequency resource pool respectively;
• and
• transmitting a first signal, the first signal occupying a target time-frequency resource block, the first signal is used for random access;
• wherein the first time-frequency resource pool comprises a positive integer number of first-type time-frequency resource block(s), and the second time-frequency resource pool comprises a positive integer number of second-type time-frequency resource block(s);
• a number of resources occupied in time domain by any one first-type time-frequency resource block in the first time-frequency resource pool is not equal to a number of resources occupied in time domain by any one second-type time-frequency resource block in the second time-frequency resource pool;
• the target time-frequency resource block is one first-type time-frequency resource block comprised in the first time-frequency resource pool, or the target time-frequency resource block is one second-type time-frequency resource block comprised in the second time-frequency resource pool;
• and positioning information of the first communication node is used for determining a time-frequency resource pool to which the target time-frequency resource block belongs between the first time-frequency resource pool and the second time-frequency resource pool;
• an absolute value of a time difference between a start time of transmitting the first signal and a reference time is equal to a first timing adjustment quantity, and a receive timing of the first communication node is used for determining the reference time;
• when the target time-frequency resource block belongs to the first time-frequency resource pool, the first timing adjustment quantity is greater than 0;
• and when the target time-frequency resource block belongs to the second time-frequency resource pool, the first timing adjustment quantity is equal to 0.