Patent ID: 8363608

Claim:
A sequence allocating apparatus comprising: a sequence allocator that allocates sequences available for random-access transmission in a cell, and a reporter that reports a signal including information indicating allocated sequences, which are allocated to the cell by the sequence allocator, to a base station corresponding to the cell; wherein the allocated sequences include a sequence of r=a and a sequence of r=N−a, where r is a sequence index, a is an integer, and N is a sequence length, and the allocated sequences are defined by the following equation: c r ⁡ ( k ) = exp ⁢ { - j ⁢ 2 ⁢ π ⁢ ⁢ r N ⁢ ( k ⁡ ( k + 1 ) 2 + qk ) } where k=0, 1, 2, . . . N−1, and q is an integer.