Device-to-device communication method and user equipment
OwnerChao LI, Yinghua SUN +2inventors
InventorsChao LI, Yinghua SUN, Zhe LIU, Xingwei ZHANG
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Abstract
Embodiments of the present invention provide a reference signal sequence mapping method and configuration method, a base station, and user equipment. The method includes: determining a sequence parameter corresponding to at least one sub frequency domain resource of UE, where one sub frequency domain resource is corresponding to one sequence parameter; generating a reference signal sequence based on the sequence parameter; and mapping the reference signal sequence to a physical resource corresponding to the at least one sub frequency domain resource.
Claims20
A method for performing device-to-device (D2D) communication by using a synchronization source, wherein the method comprises:
- detecting, by user equipment (UE), a signal of a first device based on first synchronization source configuration information, wherein the first device is a satellite device;
- when the UE detects an effective signal of the first device, using the first device as a synchronization source of the UE over a D2D link, or when the UE detects no effective signal of the first device, obtaining a second device as a synchronization source over a D2D link, wherein the second device is a device other than the satellite device;
- and
- performing communication over the D2D link based on the synchronization source over the D2D link.
User equipment, comprising:
- a transceiver;
- a non-transitory memory storage comprising instructions;
- and
- one or more hardware processors in communication with the non-transitory memory storage, wherein the one or more hardware processors execute the instructions to:
- detect a signal of a first device based on first synchronization source configuration information, wherein the first device is a satellite device;
- the transceiver is configured to receive the signal of the first device;
- when the one or more hardware processors detect an effective signal of the first device, the one or more hardware processors execute the instructions to to use the first device as a synchronization source of the user equipment over a device-to-device (D2D) link;
- or when the one or more hardware processors detect no effective signal of the first device, the one or more hardware processors execute the instructions to to obtain a second device as a synchronization source over a D2D link, wherein the second device is a device other than the satellite device;
- and
- the transceiver is configured to perform communication over the D2D link based on the synchronization source over the D2D link.
A non-transitory computer readable storage medium, comprising computer program codes which when executed by a computer processor cause the compute processor to:
- detect a signal of a first device based on first synchronization source configuration information, wherein the first device is a satellite device;
- when the compute processor detects an effective signal of the first device, use the first device as a synchronization source of user equipment (UE) over a D2D link, or when the compute processor detects no effective signal of the first device, obtain a second device as a synchronization source over a D2D link, wherein the second device is a device other than the satellite device;
- and,
- perform communication over the D2D link based on the synchronization source over the D2D link.
Dependencies are inferred from the claim text.