Information processing device, information processing method, and a program for information processing for performing measurement of first and second frequency bands based on first and second discovery reference signals within first and second periods respectively

Patent metadata

Field	Value
Publication number	US-10652805-B2
Application number	US-201816233149-A
Country	US
Kind code	B2
Filing date	Dec 27, 2018
Priority date	May 9, 2014
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

A device including a measurement unit configured to perform measurement of each of one or more frequency bands that are a part of a plurality of frequency bands that are not used by a terminal device. The measurement wait does not perform measurement of each of the remaining frequency bands among the plurality of frequency bands or performs measurement of each of the remaining frequency bands at a frequency lower than a frequency of the measurements of each of the one or more frequency bands, which makes it possible to improve measurement performed by a terminal device.

First claim

The invention claimed is:

1. A base station, comprising:
processing circuitry configured to
send, to a device, frequency group information on a frequency group including a first frequency band and a second frequency band, and measurement gap information on a measurement gap including a first period and a second period, the first period and the second, period not overlapping in a time direction,
wherein the device is configured to perform, based on the received frequency group information and the received measurement gap information, measurement of the first frequency band based on a first discovery reference signal transmitted in the first frequency band within the first period included in the measurement gap,
wherein the device is configured to perform, based on the received frequency group information and the received measurement gap information, measurement of the second frequency band based on a second discovery reference signal transmitted in the second frequency band within the second period included in the measurement gap, and
receive, from the device, a result of the measurements of the first and second frequency bands.

2. The base station of claim 1 , wherein the measurement gap is an extended measurement gap.

3. The base station of claim 1 , wherein the measurement of the first frequency band that is used by the base station is performed by the device based on a discovery reference signal and a cell-specific reference signal transmitted by the base station in the first frequency band within the first period, or the measurement of the second frequency band that is used by the base station is performed by the device based on a discovery reference signal and a cell-specific reference signal transmitted by the base station in the second frequency band within the second period.

4. The base station of claim 1 , wherein at least one of the first period and the second period is a period shorter than 6 milliseconds.

5. The base station of claim 1 , wherein measurement of a frequency group and measurement of one or more other frequency bands or measurement of one or more other frequency groups is performed by the device based on a priority of the frequency group including the first frequency band and the second frequency band and a priority of the one or more other frequency bands or a priority of the one or more other frequency groups.

6. The base station of claim 1 , wherein the measurement gap includes an additional period, and
measurement of an additional frequency band is performed by the device based on a discovery reference signal transmitted in the additional frequency band within the additional period.

7. The base station of claim 1 , wherein the first period includes a plurality of first subframes and the second period includes a plurality of second subframes, the first subframes and the second subframes not overlapping in the time direction.

8. The base station of claim 1 , wherein the frequency group information and measurement gap information are transmitted from a control entity to the base station in a case it is determined that two or more frequency bands in which a discovery reference signal is transmitted exist.

9. The base station of claim 1 , wherein the processing circuitry is configured to transmit a radio resource control connection reconfiguration message including a measurement configuration to the device.

10. The base station of claim 1 , wherein the processing circuitry is configured acquire information about a plurality of frequency bands that are not used by the device.

Assignees

• Sony Corp

Inventors

• Uchiyama Hiromasa
• Takano Hiroaki
• Furuichi Sho

Classifications

• H04W48/16 Primary

  Discovering, processing access restriction or access information · CPC title

• H04W72/04

  Wireless resource allocation · CPC title

• H04W88/02

  Terminal devices · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title