# US 2019/0174399 A1 · User terminal, base station and radio communication method

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- Number: US 2019/0174399 A1
- Document ID: US20190174399A1
- Status: Published application
- Kind: A1
- Application number: 16/266,730
- Filed: 2019-02-04
- Published: 2019-06-06
- Earliest claimed: 2014-05-08
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Hiroki Harada; Kazuaki Takeda; Satoshi Nagata
- Web page: https://patentgrep.com/patent/US20190174399A1

## CPC

- H04W 48/12: using downlink control channel
- H04J 11/0079: {Acquisition of downlink reference signals, e.g. detection of cell-ID}
- H04W 16/32: Hierarchical cell structures
- H04W 36/0055: {Transmission or use of information for re-establishing the radio link}
- H04W 36/0061: {of neighbour cell information}
- H04W 36/0088: {Scheduling hand-off measurements}
- H04W 48/16: Discovering, processing access restriction or access information
- H04W 84/045: {using private Base Stations, e.g. femto Base Stations, home Node B}
- H04W 88/02: Terminal devices
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)

## Abstract

A user terminal that includes a receiver that receives a synchronization signal in accordance with timing information provided from a network and a processor that controls a measurement of a channel state information reference signal (CSI-RS). The CSI-RS corresponds to the received synchronization signal, and is based on information about a time-frequency resource configuration and a scrambling ID of the CSI-RS provided from the network.

## Claims

### Claim 1

A user terminal comprising:
a receiver that receives a synchronization signal in accordance with timing information provided from a network; and
a processor that controls a measurement of a channel state information reference signal (CSI-RS), corresponding to the received synchronization signal, based on information about a time-frequency resource configuration and a scrambling ID of the CSI-RS provided from the network.

### Claim 2

A radio communication method, for a user terminal, comprising:
receiving a synchronization signal in accordance with timing information provided from a network; and
controlling a measurement of a channel state information reference signal (CSI-RS), corresponding to the received synchronization signal, based on information about a time-frequency resource configuration and a scrambling ID of the CSI-RS provided from the network.