Method and apparatus for delaying resynchronization for d2d operation in wireless communication system
AssigneeLG Electronics Inc.
InventorsSunghoon JUNG, Hanbyul SEO
Life of this patent
Estimating the term…
Abstract
A method and apparatus for transmitting a synchronization signal for device-to-device (D2D) operation in a wireless communication system is provided. A user equipment (UE) determines that it is out of coverage (OOC). Even though the UE is OOC, the UE continues to transmit a D2D synchronization signal for in-coverage under a specific condition. If the UE determines that it is in coverage before the specific condition is met, the UE transmits the D2D synchronization signal for in-coverage. If the specific condition is met while the UE is OOC, the UE transmits the D2D synchronization signal for OOC.
Claims15
A method for transmitting, by a user equipment (UE), a synchronization signal for device-to-device (D2D) operation in a wireless communication system, the method comprising:
- determining, by the UE, that the UE is out of coverage (OOC);
- continuing, by the UE, to transmit a D2D synchronization signal for in-coverage under a specific condition;
- and
- transmitting, by the UE, either one of the D2D synchronization signal for in-coverage or a D2D synchronization signal for OOC based on the specific condition.
A user equipment (UE) configured to transmit a synchronization signal for device-to-device (D2D) operation in a wireless communication system, the UE comprising:
- a radio frequency (RF) unit configured to transmit or receive a radio signal;
- and
- a processor coupled to the RF unit, and configured to:
- determine that the UE is out of coverage (OOC);
- continue to transmit a D2D synchronization signal for in-coverage under a specific condition;
- and
- transmit either one of the D2D synchronization signal for in-coverage or a D2D synchronization signal for OOC based on the specific condition.
Dependencies are inferred from the claim text.