Methods and apparatus for device to device synchronization priority
US-2015271861-A1 · Sep 24, 2015 · US
User terminal and base station
US2016174175A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016174175-A1 |
| Application number | US-201615049905-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 22, 2016 |
| Priority date | May 9, 2014 |
| Publication date | Jun 16, 2016 |
| Grant date | — |
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Abstract
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A user terminal includes processor configured to execute processes of: receiving, from a base station, configuration information indicating whether the user terminal shall transmit a device-to-device (D2D) synchronization signal used for a D2D proximity service; transmitting the D2D synchronization signal in response to the received configuration information being first configuration information explicitly indicating the user terminal shall transmit the D2D synchronization signal; and prohibiting transmission of the D2D synchronization signal in response to the received configuration information being second configuration information explicitly indicating the user terminal shall not transmit the D2D synchronization signal.
First claim
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1 . A user terminal comprising: processor configured to execute processes of receiving, from a base station, configuration information indicating whether the user terminal shall transmit a device-to-device (D2D) synchronization signal used for a D2D proximity service, transmitting the D2D synchronization signal in response to the received configuration information being first configuration information explicitly indicating the user terminal shall transmit the D2D synchronization signal, and prohibiting transmission of the D2D synchronization signal in response to the received configuration information being second configuration information explicitly indicating the user terminal shall not transmit the D2D synchronization signal. 2 . The user terminal according to claim 1 , wherein the processor executes a process of transmitting the D2D synchronization signal in response to the user terminal receiving the first configuration information, wherein the user terminal transmits a D2D discovery signal used for discovering proximal user terminals. 3 . The user terminal according to claim 1 , wherein the processor executes a process of transmitting the D2D synchronization signal in response to a received power of a signal received by the user terminal being less than a threshold value even if the user terminal does not receive the first configuration information. 4 . A base station comprising: processor configured to execute processes of transmitting, to a first user terminal, first configuration information that explicitly indicates the first user terminal shall transmit a device-to-device (D2D) synchronization signal used for a D2D proximity service, and transmitting, to a second user terminal, second configuration information that explicitly indicates the second user terminal shall not transmit the D2D synchronization signal. 5 . A device for controlling a user terminal, comprising: processor configured to execute processes of receiving, from a base station, configuration information indicating whether the user terminal shall transmit a device-to-device (D2D) synchronization signal used for a D2D proximity service, transmitting the D2D synchronization signal in response to the received configuration information being first configuration information explicitly indicating the user terminal shall transmit the D2D synchronization signal, and prohibiting transmission of the D2D synchronization signal in response to the received configuration information being second configuration information explicitly indicating the user terminal shall not transmit the D2D synchronization signal. 6 . The device according to claim 5 , wherein the processor executes a process of transmitting the D2D synchronization signal in response to the user terminal receiving the first configuration information, wherein the user terminal transmits a D2D discovery signal used for discovering proximal user terminals. 7 . The device according to claim 5 , wherein the processor executes a process of transmitting the D2D synchronization signal in response to a received power of a signal received by the user terminal being less than a threshold value even if the user terminal does not receive the first configuration information.
Assignees
Inventors
Classifications
one node acting as a reference for the others · CPC title
Mutual synchronization · CPC title
Access point devices · CPC title
- H04W8/005Primary
Discovery of network devices, e.g. terminals · CPC title
between terminal devices · CPC title
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Frequently asked questions
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- What does patent US2016174175A1 cover?
- A user terminal includes processor configured to execute processes of: receiving, from a base station, configuration information indicating whether the user terminal shall transmit a device-to-device (D2D) synchronization signal used for a D2D proximity service; transmitting the D2D synchronization signal in response to the received configuration information being first configuration informatio…
- Who is the assignee on this patent?
- Kyocera Corp
- What technology area does this patent fall under?
- Primary CPC classification H04W8/005. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 16 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).