Patent ID: 8532084

Claim:
A method for facilitating an uplink synchronization between a first transceiver and a second transceiver within a cell in a multi-user cellular communication system, the method comprising: receiving, by the first transceiver, a reference from the second transceiver; generating, by the first transceiver, a set of signature sequences based on the reference; selecting, by the first transceiver, a first signature sequence from the set of signature sequences; incorporating, by the first transceiver, the first signature sequence into a signal; and transmitting, by the first transceiver, the signal to the second transceiver, wherein the signal is used for a uplink synchronization between the first transceiver and the second transceiver, the set of signature sequences being generated from sequences with zero-correlation zone, and the sequences with zero-correlation zone being obtained from a Zadoff-Chu sequence, the Zadoff-Chu sequence being: a ⁡ ( k ) = { W N k 2 / 2 + qk , N ⁢ ⁢ even W N k ⁡ ( k + 1 ) / 2 + qk , N ⁢ ⁢ odd , k = 0 , 1 , … ⁢ , N - 1 , where ⁢ ⁢ W N = exp ⁡ ( - j ⁢ ⁢ 2 ⁢ π ⁢ ⁢ r / N ) , where r, q and N are integers and r is relatively prime to N.