USER TERMINAL

• US 20160212609A1
• Filed: 03/29/2016
• Published: 07/21/2016
• Est. Priority Date: 08/08/2014
• Status: Active Application

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: FUJISHIRO, Masato, ADACHI, Hiroyuki, YAMAZAKI, Chiharu, NAGASAKA, Yushi, CHANG, Henry
• Application Number:
  US15/083,645
• Publication Number:
  US 20160212609A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals

Abstract

A user terminal according to an embodiment comprises: a controller including a processor configured to obtain information for identifying resources of a Device to Device (D2D) discovery procedure for discovering a proximity terminal from a System Information Block (SIB) of a cell of another frequency different from a frequency of a serving cell. The controller monitors a D2D discovery signal in the D2D discovery procedure in the another frequency.

Claims

1. A user terminal, comprising:

a controller including a processor configured to obtain information for identifying resources of a Device to Device (D2D) discovery procedure for discovering a proximity terminal from a System Information Block (SIB) of a cell of another frequency different from a frequency of a serving cell, wherein

the controller monitors a D2D discovery signal in the D2D discovery procedure in the another frequency.

2. The user terminal according to claim 1, wherein

the controller monitors the D2D discovery signal in the another frequency by use of Discontinuous Reception (DRX).

3. The user terminal according to claim 2, wherein

the controller monitors the D2D discovery signal in the another frequency in a period in which a reception of a downlink signal is exempted by use of the DRX.

4. The user terminal according to claim 2, wherein

the controller monitors the D2D discovery signal in the another frequency by use of the DRX on a basis of whether the user terminal is in an RRC idle state or an RRC connected state.

5. The user terminal according to claim 1, wherein

the controller monitors the D2D discovery signal in the another frequency on a basis of the information.

6. The user terminal according to claim 1, wherein

the controller prioritizes a reception of a downlink signal over the monitoring of the D2D discovery signal in the another frequency.

7. A processor of a user terminal, configured to:

obtain information for identifying resources of a Device to Device (D2D) discovery procedure for discovering a proximity terminal from a SIB (System Information Block) of a cell of another frequency different from a frequency of a serving cell; and

monitor a D2D discovery signal in the D2D discovery procedure in the another frequency.

8. A user terminal, comprising:

a controller including a processor configured to announce a Device to Device (D2D) discovery signal in a D2D discovery procedure to discover a proximity terminal in a frequency of a serving cell, wherein

the controller prioritizes communication with a base station over announcing the D2D discovery signal even when a resource pool for the D2D discovery procedure is arranged.