US Patent No. 10,484,991


Patent No. 10,484,991
Issue Date November 19, 2019
Title User Terminal, Radio Base Station And Radio Communication Method
Inventorship Kazuaki Takeda, Tokyo (JP)
Hiroki Harada, Tokyo (JP)
Satoshi Nagata, Tokyo (JP)
Assignee NTT DOCOMO, INC., Tokyo (JP)

Claim of US Patent No. 10,484,991

1. A user terminal, in which a band to use is limited to a narrower band than a minimum system bandwidth supported in an existing LTE (Long Term Evolution) system, the user terminal comprising:a receiving section that receives a signal that is divided into a plurality of periods and transmitted, in a predetermined narrow band that overlaps a frequency band in which an existing synchronization signal is transmitted; and
a control section that performs a synchronization process by identifying the signal that is divided into the plurality of periods and transmitted as being a synchronization signal that is generated by using a predetermined sequence,
wherein a signal that is transmitted in at least one period in the plurality of periods is a portion of the existing synchronization signal, the portion being mapped to the predetermined narrow band.