Method for selecting neighboring ue to perform d2d communication
AssigneeLG Electronics Inc.
InventorsSeokmin SHIN, Hyukjin CHAE, Hanbyul SEO
Life of this patent
Estimating the term…
Abstract
A disclosure of the present specification provides a method for selecting, by a user equipment (UE) located outside a coverage of a base station, a neighboring UE with which the UE will perform device-to-device (D2D) communication. According to the method, it is possible to quickly find out whether a neighboring UE is located within the coverage of a base station and is capable of operating as a relay, through a DMRS and a detection signal received from the neighboring UE.
Claims12
A method for selecting a neighboring user equipment (UE) that is going to perform a Device to Device (D2D) communication, the method performed by a UE located out of coverage of a base station and comprising:
- receiving a Physical Sidelink Discovery Channel (PSDCH) including a discovery signal and a De-Modulation Reference Signal (DMRS) for demodulating the PSDCH from one or more neighboring UEs, wherein the PDSCH is scrambled by a scrambling sequence;
- determining whether the one or more neighboring UEs are located in the coverage of the base station based on the received DMRS;
- determining whether the one or more neighboring UEs are able to operate as a relay based on the a scrambling sequence used for scrambling the PSDCH;
- and
- selecting a UE located in the coverage of the base station and able to operate as a relay among the one or more neighboring UEs.
A user equipment (UE) selecting a neighboring UE that is going to perform a Device to Device (D2D) communication, the UE being located out of coverage of a base station and comprising:
- a transmitting and receiving unit;
- and
- a processor for controlling the transmitting and receiving unit,
- wherein the processor is configured to perform:
- receiving a Physical Sidelink Discovery Channel (PSDCH) including a discovery signal and a De-Modulation Reference Signal (DMRS) for demodulating the PSDCH from one or more neighboring UEs, wherein the PDSCH is scrambled by a scrambling sequence;
- determining whether the one or more neighboring UEs are located in the coverage of the base station based on the received DMRS;
- determining whether the one or more neighboring UEs are able to operate as a relay based on the a scrambling sequence used for scrambling the PSDCH;
- and
- selecting a UE located in the coverage of the base station and able to operate as a relay among the one or more neighboring UEs.
Dependencies are inferred from the claim text.