DEVICE-TO-DEVICE DISCOVERY METHOD IN WIRELESS COMMUNICATION SYSTEM
First Claim
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1. A method for transmitting a discovery signal by a device, comprising:
- determining whether a first period for a physical layer uplink channel or signal and a second period for the discovery signal are overlapping; and
if the first period and the second period are overlapping and the physical layer uplink channel or signal is transmitted in the overlapping period, not transmitting the discovery channel signal in the overlapping period.
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Abstract
Disclosed herein is a device-to-device discovery method in a wireless communication system. A device determines whether a first subframe for a physical layer uplink channel or signal and a second subframe for the discovery signal are the same. The device transmits the physical layer uplink channel or signal without transmitting or receiving the discovery signal, in the same subframe, when the first subframe and the second subframe are the same.
28 Citations
20 Claims
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1. A method for transmitting a discovery signal by a device, comprising:
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determining whether a first period for a physical layer uplink channel or signal and a second period for the discovery signal are overlapping; and if the first period and the second period are overlapping and the physical layer uplink channel or signal is transmitted in the overlapping period, not transmitting the discovery channel signal in the overlapping period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for transmitting or receiving a discovery signal by a device, comprising:
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determining whether a physical random access channel is transmitted in a subframe in which a resource region of the physical random access channel is included; and if it is determined that the physical random access channel is not transmitted in the subframe, transmitting or receiving the discovery signal in the rest of the resource excluding the resource region of the physical random access channel and the physical layer uplink control channel from the subframe. - View Dependent Claims (11)
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12. A method for transmitting a discovery signal by a device, the method comprising:
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receiving discovery resource information indicating discovery resource for transmitting the discovery signal from a base station; and transmitting the discovery signal by using the discovery resource information, wherein the discovery resource information includes discovery period information indicating discovery period for transmitting the discovery signal, subframe bitmap indicating subframes used for transmitting the discovery signal, and offset information indicating start subframe of the discovery period. - View Dependent Claims (13, 14, 15, 16)
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17. A method for transmitting a discovery signal to a counterpart device by a plurality of devices, comprising:
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dividing the plurality of devices into a group including a first device group and a second device group; dividing a resource region used to transmit the discovery signal into a group including a first resource group and a second resource group; transmitting, by the first device group, the discovery signal using the first resource group, in a first period; transmitting, by the second device group, the discovery signal using the second resource group, in the first period; transmitting, by the second device group, the discovery signal using the first resource group, in a second period; and transmitting, by the first device group, the discovery signal using the second resource group, in the second period. - View Dependent Claims (18, 19, 20)
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Specification