US Patent No. 10,433,295

USER DEVICE, BASE STATION, SIGNAL RECEPTION METHOD, AND SIGNAL TRANSMISSION METHOD


Patent No. 10,433,295
Issue Date October 01, 2019
Title User Device, Base Station, Signal Reception Method, And Signal Transmission Method
Inventorship Kazuaki Takeda, Tokyo (JP)
Satoshi Nagata, Tokyo (JP)
Qin Mu, Beijing (CN)
Liu Liu, Beijing (CN)
Huiling Jiang, Beijing (CN)
Assignee NTT DOCOMO, INC., Tokyo (JP)

Claim of US Patent No. 10,433,295

1. A user device that communicates with a base station in a narrowband radio communication system using a physical downlink control channel or a physical downlink shared channel that includes multiple resources of a predetermined unit in a time domain, the user device comprising:a processor that obtains a repetition number indicating a number of times each of the multiple resources is repeatedly transmitted in the time domain, and information indicating a predetermined resource number; and
a receiver that receives, from the base station, the physical downlink control channel or the physical downlink shared channel in which each of the multiple resources is consecutively repeated a number of times indicated by the predetermined resource number in each repetition unit and is repeated a number of times indicated by the repetition number in total,
wherein a reference signal is mapped to each of the multiple resources constituting the physical downlink control channel or the physical downlink shared channel, and
the receiver performs demodulation by performing channel estimation using the received reference signal.