A RANDOM ACCESS PREAMBLE SIGNAL CONSTRUCTION

摘要

A node and an access node and methods therein for handling random access is disclosed. A method in a node for random access in a wireless network comprises, determining a set of sub-carrier shifts, wherein each sub-carrier shift indicates a shift with respect to a starting position in frequency domain for transmitting a random access preamble. The method further comprises selecting a sub-carrier shift from the set of sub-carrier shifts. The method further comprises transmitting a random access preamble to an access node， wherein the random access preamble is transmitted according to the selected sub-carrier shift.