Patent ID: 8787957

Claim:
A method of establishing a communication link between a mobile terminal and a network, the method comprising: receiving, by the mobile terminal, a high-speed related parameter from the network, the high-speed related parameter representing either ‘TRUE’ or ‘FALSE’, wherein TRUE corresponds to a restricted set of cyclic shifts and FALSE corresponds to an unrestricted set of cyclic shifts; if the high-speed related parameter represents TRUE, generating, by the mobile terminal, a first plurality of sequences for random access from Zadoff-Chu (ZC) sequences with zero correlation zones using the restricted set of cyclic shifts; and transmitting, by the mobile terminal, one of the generated first plurality of sequence to the network for the random access, and if the high-speed related parameter represents FALSE, generating, by the mobile terminal, a second plurality of sequences for random access from Zadoff-Chu (ZC) sequences with zero correlation zones using the unrestricted set of cyclic shifts; and transmitting, by the mobile terminal, one of the generated second plurality of sequences to the network for the random access.