Method and apparatus for device-to-device communication in wireless communication system
AssigneesLG Electronics Inc., Seoul National University R&Db Foundation
InventorsHakseong Kim, Seungil Park, Sunghyun Choi, Byounghoon Kim, Hanbyul Seo
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Abstract
This specification provides a method for performing a discovery procedure in a wireless communication system supporting device to device (D2D) communication. The method is performed by first user equipment and includes monitoring a discovery resource region, selecting a discovery resource for sending a discovery message in the discovery resource region, and transmitting the discovery message to second user equipment through the selected discovery resource. The discovery resource region includes a first discovery resource region and a second discovery resource region.
Claims16
A method for performing a discovery procedure in a wireless communication system supporting device-to-device (D2D) communication, the method performed by a first user equipment (UE) and comprising:
- scanning a first discovery resource region included in a discovery resource region to acquire information of neighboring UEs,
- wherein the discovery resource region is repeatedly allocated every discovery period,
- wherein the discovery resource region includes the first discovery resource region and a second discovery resource region,
- wherein the first discovery resource region is a resource region in which at least one UE performing a current discovery procedure transceives a discovery message, and
- wherein the second discovery resource region is a resource region in which one or more UEs participating in a new discovery procedure transmit the discovery message;
- measuring received energy for resources of the first discovery resource region;
- selecting a first resource in the first discovery resource region based on the measurement;
- determining a second resource mapped to the selected first resource,
- wherein the second resource is a resource of the second discovery resource region;
- and
- transmitting the discovery message to a second UE in the determined second resource.
A first user equipment (UE) for performing a discovery procedure in a wireless communication system supporting device-to-device (D2D) communication, the first UE comprising:
- a communication unit configured to transmit and receive radio signals;
- and
- a processor functionally coupled to the communication unit,
- wherein the processor is configured to:
- scan a first discovery resource region included in a discovery resource region to acquire information of neighboring UEs,
- wherein the discovery resource region is repeatedly allocated every discovery period,
- wherein the discovery resource region includes the first discovery resource region and a second discovery resource region,
- wherein the first discovery resource region is a resource region in which at least one UE performing a current discovery procedure transceives a discovery message, and
- wherein the second discovery resource region is a resource region in which one or more UEs participating in a new discovery procedure transmit the discovery message,
- measure received energy for resources of the first discovery resource region,
- select a first resource in the first discovery resource region based on the measurement,
- determine a second resource mapped to the selected first resource,
- wherein the second resource is a resource of the second discovery resource region, and
- transmit the discovery message to a second UE in the determined second resource.
Dependencies are inferred from the claim text.