Method and apparatus for receiving control information of device-to-device UE in wireless communication system
AssigneeLG Electronics Inc.
InventorsKijun Kim, Hanbyul Seo, Suckchel Yang, Yunjung Yi
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Abstract
According to one embodiment of the present invention, a method for receiving device-to-device (D2D) control information at a user equipment (UE) in a wireless communication system, the method comprising receiving a subframe; receiving a D2D synchronization signal sequence transmitted on the subframe; deciding a hop count of the D2D synchronization signal sequence from an index of the D2D synchronization signal sequence; deciding a transmission location of D2D control information corresponding to the decided hop count; and receiving the D2D control information at the decided transmission location.
Claims11
A method for receiving device-to-device (D2D) control information at a user equipment (UE) in a wireless communication system, the method comprising:
- receiving a subframe;
- receiving a D2D synchronization signal sequence transmitted on the subframe from a base station;
- deciding a hop count of the D2D synchronization signal sequence from an index of the D2D synchronization signal sequence;
- deciding a transmission location of D2D control information corresponding to the decided hop count;
- receiving the D2D control information from the base station at the decided transmission location,
- wherein, when a transmission period of the subframe, on which the D2D synchronization signal sequence is transmitted, is predetermined, the UE transmits the D2D synchronization signal sequence once more within the transmission period,
- wherein the D2D synchronization signal sequence transmitted once more is transmitted on a next subframe of the subframe, on which the D2D control information corresponding to a last hop count found in the subframe is transmitted, and
- wherein a time-frequency correction value of a synchronization signal of the UE is applied to the D2D synchronization signal sequence transmitted once more.
A user equipment (UE) apparatus for transmitting a device-to-device (D2D) signal in a wireless communication system, the UE apparatus comprising:
- a receive module;
- and
- a processor,
- wherein the processor receives a D2D synchronization signal sequence transmitted on a received subframe from a base station, decides a hop count of the D2D synchronization signal sequence from an index of the D2D synchronization signal sequence, decides a transmission location of D2D control information corresponding to the decided hop count, and receives the D2D control information from the base station at the decided transmission location,
- wherein, when a transmission period of the subframe, on which the D2D synchronization signal sequence is transmitted, is predetermined, the UE transmits the D2D synchronization signal sequence once more within the transmission period,
- wherein the D2D synchronization signal sequence transmitted once more is transmitted on a next subframe of the subframe, on which the D2D control information corresponding to a last hop count found in the subframe is transmitted, and
- wherein a time-frequency correction value of a synchronization signal of the UE is applied to the D2D synchronization signal sequence transmitted once more.
Dependencies are inferred from the claim text.