Transmission apparatus and method for generating reference signal

摘要

It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method includes the steps of setting a standard sequence with a standard sequence length (Nb) and a standard sequence number (rb) in a step (ST101), setting a threshold value (Xth(m)) in accordance with an RB number (m) in a step (ST103), setting a sequence length (N) corresponding to RB number (m) in a step (ST104), judging whether ¦r/N−rb/Nb¦=Xth(m) is satisfied in a step (ST106), including a plurality of Zadoff-Chu sequences with a sequence number (r) and a sequence length (N) in a sequence group (rb) in a step (ST107) if the judgment is positive, and allocating the sequence group (rb) to the same cell in a step (ST112).

主权项

1. A transmission apparatus comprising:
a receiving section configured to receive control information related to transmission bandwidth of a reference signal; a generating section configured to generate the reference signal using one of sequence(s) which are grouped into a group, wherein Nb is a defined sequence length which is common to all cells, rb is an integer number which is less than Nb, and a defined number of the sequence(s) with sequence number(s) r in ascending order of absolute value of difference between rb/Nb and r/N are grouped into the group for a sequence length N which depends on the transmission bandwidth based on the control information; and a transmitting section configured to transmit the reference signal.