Patent ID: 9438396
Filing Date: 2016-09-06
CPC Classification: H04J,H04L,H04W

Claim Text:
1. A radio communication system comprising a radio base station apparatus and a mobile terminal apparatus that is configured to be able to communicate with the radio base station apparatus, wherein: the radio base station apparatus comprises an allocation section configured to allocate Zadoff-Chu sequences in a new number of randomized sequences, the new number being a number between the number of randomized sequences corresponding to a Zadoff-Chu sequence having a length of a largest prime number, not exceeding a Zadoff-Chu sequence length required in an uplink demodulation reference signal, and the number of randomized sequences defined in Rel. 10 LTE, the mobile terminal apparatus comprises a generating section configured to generate demodulation reference signal sequences using the Zadoff-Chu sequences allocated in the new number of randomized sequences, and the number of randomized sequences defined in Rel. 10 LTE is set to 30 for bandwidth of 1 RB to 5 RBs, and is set to 60 for bandwidth of 6 RBs or more.