Patent ID: 8229474

Claim:
A method for terminal access, comprising: receiving, by a terminal, a paging message from a network; determining, by the terminal, orthogonal code information which differs from the one being used for current system access according to a predetermined rule; acquiring, by the terminal, a corresponding orthogonal code according to the orthogonal code information; modulating, by the terminal, an access probe according to the orthogonal code; and transmitting, by the terminal, the access probe to the network; wherein the determining by the terminal the orthogonal code information which differs from the one being used for the current system access according to a predetermined rule further comprises: performing, by the terminal, a modulo-N operation upon a subframe number associated with the current system; and determining, by the terminal, the corresponding orthogonal code information according to the result of the modulo-N operation upon the superframe number.