Method of selecting synchronization source in wireless communication system and apparatus therefor
First Claim
1. A method of selecting a synchronization source, which is selected by a device-to-device (D2D) user equipment (UE) in a wireless communication system, the method comprising:
- receiving a plurality of synchronization signals;
selecting a plurality of synchronization candidate signals that are equal to or greater than a predetermined threshold value among the received plurality of synchronization signals;
detecting a resource pool to which a scheduling assignment (SA) is detected for each of the plurality of synchronization candidate signals;
determining a synchronization signal by applying a first priority, which is a priority according to the resource pool, to the plurality of synchronization candidate signals based on the detected resource pool; and
determining a UE that has transmitted the determined synchronization signal as a synchronization source.
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Abstract
According to one embodiment of the present invention, a method of selecting a synchronization source, which is selected by a D2D (device-to-device) UE in a wireless communication system includes the steps of receiving a plurality of synchronization signals, selecting a plurality of candidate synchronization signals from a plurality of the synchronization signals and determining a synchronization signal in a manner of applying a priority to a plurality of the candidate synchronization signals and selecting a UE, which has transmitted the determined synchronization signal, as a synchronization source. In this case, the application of the priority can be performed in a manner of sequentially applying a plurality of priorities related to a D2D signal according to a priority for the application of the priority.
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Citations
12 Claims
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1. A method of selecting a synchronization source, which is selected by a device-to-device (D2D) user equipment (UE) in a wireless communication system, the method comprising:
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receiving a plurality of synchronization signals; selecting a plurality of synchronization candidate signals that are equal to or greater than a predetermined threshold value among the received plurality of synchronization signals; detecting a resource pool to which a scheduling assignment (SA) is detected for each of the plurality of synchronization candidate signals; determining a synchronization signal by applying a first priority, which is a priority according to the resource pool, to the plurality of synchronization candidate signals based on the detected resource pool; and determining a UE that has transmitted the determined synchronization signal as a synchronization source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device-to-device (D2D) user equipment (UE) for selecting a synchronization signal in a wireless communication system, the D2D UE comprising:
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a receiver; and a processor, wherein the processor is configured to; control the receiver to receive a plurality of synchronization signals, select a plurality of synchronization candidate signals that are equal to or greater than a predetermined threshold value among the received plurality of synchronization signals, detect a resource pool to which a scheduling assignment (SA) is detected for each of the plurality of synchronization candidate signals, determine a synchronization signal by applying a first priority, which is a priority according to the resource pool, to the plurality of synchronization candidate signals based on the detected resource pool, and determine the UE that has transmitted the determined synchronization signal as a synchronization source.
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Specification