MOBILE COMMUNICATION SYSTEM AND USER TERMINAL

• US 20160338127A1
• Filed: 07/29/2016
• Published: 11/17/2016
• Est. Priority Date: 01/31/2014
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: MATSUMOTO, Naohisa, MORITA, Kugo, FUJISHIRO, Masato, SAIWAI, Takahiro
• Granted Patent: US 9,854,618 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals

Abstract

A first user terminal according to an embodiment comprises: at least one processor and at least one memory coupled to the processor. The processor is configured to perform processes of: determining first radio resources to be used for transmitting control information, the control information indicating location of second radio resources to be used for transmitting data by direct Device-to-Device communication; and directly transmitting the same control information repeatedly to a second user terminal in each resource block included in the first control resources.

Claims

1. A first user terminal, comprising:

at least one processor and at least one memory coupled to the processor, wherein

the processor configured to perform processes of;

determining first radio resources to be used for transmitting control information, the control information indicating location of second radio resources to be used for transmitting data by direct Device-to-Device communication; and

directly transmitting the same control information repeatedly to a second user terminal in each resource block included in the first control resources.

2. The first user terminal according to claim 1, wherein the processor is configured to perform the process of randomly determining the first radio resources from a resource area in which radio resources, which is able to be used for transmitting the control information, is arranged.

3. The first user terminal according to claim 1, wherein the processor is configured to perform a process of receiving information on the first radio resources from a base station.

4. The first user terminal according to claim 3, wherein the processor is configured to perform the process of receiving the information by downlink control information from the base station.

5. The first user terminal according to claim 3, wherein the processor is configured to perform the process of receiving the information by a Radio Resource Control (RRC) message from the base station.

6. The first user terminal according to claim 3, wherein the processor is configured to perform the process of transmitting the information if the first user terminal exists in a cell managed by the base station.

7. An apparatus for a first user terminal comprising:

at least one processor and at least one memory coupled to the processor, wherein

the processor configured to perform processes of;

determining first radio resources to be used for transmitting control information, the control information indicating location of second radio resources to be used for transmitting data by direct Device-to-Device communication; and

directly transmitting the same control information repeatedly to a second user terminal in each resource block included in the first control resources.