APPARATUS, METHODS AND COMPUTER PROGRAM PRODUCTS PROVIDING LIMITED USE OF ZADOFF-CHU SEQUENCES IN PILOT OR PREAMBLE SIGNALS

摘要

In one, non-limiting exemplary embodiment, a method includes: obtaining a timing uncertainty window parameter (601); and selecting, using the obtained timing uncertainty window parameter, a preamble sequence including a cyclic shift of a Zadoff-Chu root sequence, wherein the cyclic shift is an allowed cyclic shift from a group of allowed cyclic shifts, wherein the allowed cyclic shifts have timing uncertainty windows with timing uncertainty window elements, wherein the timing uncertainty windows of the allowed cyclic shifts do not overlap with one other or with frequency cyclic shifts of +1 or -1 of the timing uncertainty window elements, and wherein the frequency cyclic shift of -1 of the timing uncertainty window elements of the allowed cyclic shifts does not overlap with the frequency cyclic shift of +1 of the timing uncertainty window elements of other allowed cyclic shifts (602).