Method and device for determining transmission resource for device-to-device communications

Patent metadata

Field	Value
Publication number	US-11160085-B2
Application number	US-202016941459-A
Country	US
Kind code	B2
Filing date	Jul 28, 2020
Priority date	Mar 29, 2016
Publication date	Oct 26, 2021
Grant date	Oct 26, 2021

Abstract

The invention discloses a method and device for determining a transmission resource for device-to-device (D2D) communications and capable of enhancing D2D communication quality. The method comprises: determining a plurality of transmission resource sets, wherein each of the plurality of transmission resource sets comprises at least one transmission resource block and has a corresponding distance threshold; and determining, from the plurality of transmission resource sets, and according to current location information of first terminal equipment and distance thresholds of the plurality of transmission resource sets, a target transmission resource set for the first terminal equipment to perform D2D communication.

First claim

The invention claimed is:

1. A method for determining transmission resources for Device to Device (D2D) communication, comprising:
determining a plurality of transmission resource sets, wherein each of the plurality of transmission resource sets comprises at least one transmission resource block, and each transmission resource set has a corresponding distance threshold; and
wherein each of the plurality of transmission resource sets further has a corresponding relative movement speed threshold; and
acquiring location information and movement speed information of each of at least one second terminal equipment corresponding to a first transmission resource set, each of the at least one second terminal equipment adopting transmission resources in the first transmission resource set for D2D communication and the plurality of transmission resource sets comprising the first transmission resource set;
determining statistical distance information between the first terminal equipment and the at least one second terminal equipment according to the location information of the first terminal equipment and the location information of each of the at least one second terminal equipment, wherein the statistical distance information comprises at least one of a maximum distance, an average distance or a distance average variance;
if the statistical distance information between the first terminal equipment and the at least one second terminal equipment meets the distance threshold of the first transmission resource set, determining the statistical relative movement speed information between the first terminal equipment and the at least one second terminal equipment according to the movement speed information of the first terminal equipment and the movement speed information of each of the at least one second terminal equipment, wherein the statistical relative movement speed information comprises at least one of a maximum relative movement speed, an average relative movement speed or a relative movement speed average variance; and
determining whether the first terminal equipment can adopt the transmission resources in the first transmission resource set for D2D communication according to the statistical distance information and statistical relative movement speed information between the first terminal equipment and the at least one second terminal equipment and the distance threshold and relative movement speed threshold of the first transmission resource set.

2. The method as claimed in claim 1 , wherein the statistical distance information comprises the maximum distance and the statistical relative movement speed information comprises the maximum relative movement speed; and
determining whether the first terminal equipment can adopt the transmission resources in the first transmission resource set for D2D communication according to the statistical distance information and statistical relative movement speed information between the first terminal equipment and the at least one second terminal equipment and the distance threshold and relative movement speed threshold of the first transmission resource set comprises:
when the maximum distance between the first terminal equipment and the at least one second terminal equipment is less than or equal to the distance threshold of the first transmission resource set and the maximum relative movement speed between the first terminal equipment and the at least one second terminal equipment is less than or equal to the relative movement speed threshold of the first transmission resource set, determining that the first terminal equipment can adopt the transmission resources in the first transmission resource set for D2D communication,
and wherein determining the target transmission resource set for D2D communication of the first terminal equipment from the plurality of transmission resource sets according to the location information and movement speed information of the first terminal equipment and the distance thresholds and relative movement speed thresholds of the plurality of transmission resource sets further comprises:
responsive to a determination that the first terminal equipment does not meet the relative movement speed threshold of each of the plurality of transmission resource sets, determining a transmission resource set corresponding to a lowest one of at least one maximum relative movement speed corresponding to at least one candidate transmission resource set as the target transmission resource set for the first terminal equipment, wherein the plurality of transmission resource sets comprise the at least one candidate transmission resource set, the first terminal equipment meets the distance threshold of each of the at least one candidate transmission resource set, and the maximum relative movement speed corresponding to each candidate transmission resource set is a maximum relative movement speed between the first terminal equipment and at least one third terminal equipment adopting transmission resources in each candidate transmission resource set for D2D communication.

3. The method as claimed in claim 1 , wherein the at least one second terminal equipment comprises all terminal equipment adopting the transmission resources in the first transmission resource set for D2D communication.

4. The method as claimed in claim 1 , wherein the at least one second terminal equipment comprises all the other terminal equipment, except a fourth terminal equipment, of the terminal equipment adopting the transmission resources in the first transmission resource set for D2D communication, wherein the fourth terminal equipment does not meet the relative movement speed threshold of the first transmission resource set.

5. The method as claimed in claim 1 , wherein acquiring the location information and movement speed information of each of the at least one second terminal equipment corresponding to the first transmission resource set comprises:
receiving a D2D broadcast message sent by each of the at least one second terminal equipment, the D2D broadcast message carrying the location information and movement speed information of the second terminal equipment,
wherein the method further comprises:
determining that each second terminal equipment adopts the transmission resources in the first transmission resource set for D2D communication according to transmission resources occupied by the D2D broadcast message sent by each of the at least one second terminal equipment.

6. The method as claimed in claim 1 , wherein acquiring the location information and movement speed information of each of the at least one second terminal equipment corresponding to the first transmission resource set comprises:
receiving a status report sent by each of the at least one second terminal equipment through a cellular communication link, the status report carrying the location information and movement speed information of the second terminal equipment.

7. The method as claimed in claim 1 , further comprising:
before determining the target transmission resource set for D2D communication of the first terminal equipment from the plurality of transmission resource sets, determining whether the first terminal equipment meets a distance threshold of a second transmission resource set, wherein the first terminal equipment is adopting transmission resources in the second transmission resource set for D2D communication, wherein
determining the target transmission resource set for D2D communication of the first terminal equipment from the plurality of transmission resource sets comprises:
when the first terminal equipment does not meet the distance threshold of the second transmission resource set, determining the target transmission resource set for the first terminal equipment from the

Assignees

• Guangdong Oppo Mobile Telecommunications Corp Ltd

Inventors

• Feng Bin

Classifications

• H04W72/51 Primary

  based on terminal or device properties · CPC title

• H04W92/18

  between terminal devices · CPC title

• H04W64/003

  locating network equipment · CPC title

• H04W72/25

  between terminals via a wireless link, e.g. sidelink · CPC title

• H04W72/02 Primary

  Selection of wireless resources by user or terminal · CPC title