RADIO COMMUNICATION SYSTEM, MOBILE TERMINAL APPARATUS, RADIO BASE STATION APPARATUS AND RADIO COMMUNICATION METHOD

摘要

The present invention is designed to allow more DM-RS sequences to be allocated, and more DM-RS resources to be secured. The radio communication method of the present invention has a characteristic of generating DM-RS sequences using ZC sequences that are allocated in a new number of randomized sequences between the number of randomized sequences corresponding to a ZC sequence having a length of the largest prime number, not exceeding the ZC sequence length required in the uplink DM-RS, and the number of randomized sequences defined in Rel. 10 LTE.

主权项

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; and 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.