METHOD AND DEVICE FOR PERFORMING GROUP COMMUNICATION USING DIRECT COMMUNICATION BETWEEN TERMINALS IN WIRELESS COMMUNICATION SYSTEM
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Abstract
The present application discloses a method of performing group communication using user equipment (UE) in a wireless communication system. In particular, the method includes: detecting a first group of discovery signals having a first tier counter value; generating a second group of discovery signals having a second tier counter value by using the first value; and transmitting the second group of discovery signals to another UE, wherein the tier counter indicates a tier value to which the UE belongs based on an initially activated UE or base station in the group communication.
36 Citations
22 Claims
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1-12. -12. (canceled)
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13. A method for transmitting synchronization signals for a Device-to-Device (D2D) link at a user equipment (UE) in a wireless communication system, the method comprising;
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receiving a plurality of first synchronization signals for the D2D link, each of the plurality of first synchronization signals including information on a priority of corresponding first synchronization signal; selecting one of at least one first synchronization signal having a highest priority using a reception quality of the at least one first synchronization signal; generating a second synchronization signal for the D2D link using the selected first synchronization signal; and transmitting the second synchronization signal, wherein the priority is determined according to a number of paths through which the corresponding first synchronization signal is received. - View Dependent Claims (14, 15, 16, 17)
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18. A user equipment (UE) in a wireless communication system, the UE comprising:
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a Radio Frequency (RF) module to receive a plurality of first synchronization signals for a Device-to-Device (D2D) link and to transmit a second synchronization signal; and a processor to select one of at least one first synchronization signal having a highest priority using a reception quality of the at least one first synchronization signal and to generate the second synchronization signal for the D2D link using the selected first synchronization signal, wherein the priority is determined according to a number of paths through which the corresponding first synchronization signal is received. - View Dependent Claims (19, 20, 21, 22)
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Specification