Method and apparatus for transmitting/receiving signal related to device-to-device communication in wireless communication system
First Claim
1. A method of performing transmission and reception related to device-to-device (D2D) communication, which is performed by a first user equipment (UE) in a wireless communication system, the method comprising:
- determining, by the first UE, whether or not the first UE locates at a cell boundary within coverage of a base station;
stopping, by the first UE, uplink transmission to the base station on a first frequency band for a prescribed time period and searching, by the first UE, for a signal transmitted from a second UE during the prescribed time period, when the first UE determines that the first UE locates at the cell boundary within coverage of the base station;
if the signal transmitted from the second UE during the prescribed time period is searched by the first UE, performing, by the first UE, a report to the base station,wherein the report comprises information on whether the second UE is proximate to the first UE; and
when there is acknowledgement information that should be transmitted in a first subframe included in the prescribed time period in response to a signal transmitted from the base station, but the acknowledgement information cannot be transmitted from the first UE to the base station in the first subframe, transmitting, by the first UE, the acknowledgement information to the base station in a second subframe that is not included in the prescribed time period.
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Abstract
Embodiments of the present invention relate to a method for transmitting/receiving a signal related to a device-to-device (D2D) communication by a first user equipment in a wireless communication system. The method comprises the steps of: stopping uplink transmission in a first band for a predetermined time interval and searching for a signal transmitted by a second user equipment; and transmitting a report to a third user equipment when the signal transmitted by the second user equipment is found, wherein the report contains the existence of the second user equipment and information related to a band in which the signal from the second user equipment is received.
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Citations
14 Claims
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1. A method of performing transmission and reception related to device-to-device (D2D) communication, which is performed by a first user equipment (UE) in a wireless communication system, the method comprising:
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determining, by the first UE, whether or not the first UE locates at a cell boundary within coverage of a base station; stopping, by the first UE, uplink transmission to the base station on a first frequency band for a prescribed time period and searching, by the first UE, for a signal transmitted from a second UE during the prescribed time period, when the first UE determines that the first UE locates at the cell boundary within coverage of the base station; if the signal transmitted from the second UE during the prescribed time period is searched by the first UE, performing, by the first UE, a report to the base station, wherein the report comprises information on whether the second UE is proximate to the first UE; and when there is acknowledgement information that should be transmitted in a first subframe included in the prescribed time period in response to a signal transmitted from the base station, but the acknowledgement information cannot be transmitted from the first UE to the base station in the first subframe, transmitting, by the first UE, the acknowledgement information to the base station in a second subframe that is not included in the prescribed time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A first user equipment (UE) for performing transmission and reception related to device-to-device (D2D) communication in a wireless communication system, the first UE comprising:
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a transmission module; a reception module; and a processor operably coupled with the transmission module and the reception module, wherein the processor is configured to; determine whether or not the first UE locates at a cell boundary within coverage of a base station, stop uplink transmission to the base station on a first frequency band for a prescribed time period and search for a signal transmitted from a second UE, when the first UE locates at the cell boundary within coverage of the base station, if the signal transmitted from the second UE during the prescribed time period is searched by the processor, perform a report to the base station, wherein the report comprises information on whether the second UE is proximate to the first UE, and when there is acknowledgement information that should be transmitted in a first subframe included in the prescribed time period in response to a signal transmitted from the base station, but the acknowledgement information cannot be transmitted from the first UE to the base station in the first subframe, control the transmission module to transmit the acknowledgement information in a second subframe that is not included in the prescribed time period.
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Specification