D2d communication method and d2d communication apparatus

Patent metadata

Field	Value
Publication number	US-2016352485-A1
Application number	US-201615166257-A
Country	US
Kind code	A1
Filing date	May 27, 2016
Priority date	May 29, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

Device to device (D2D) communication is provided. A method comprises: acquiring information associated with a pilot channel resource used to send at least one directional pilot signal associated with directional D2D communication; and transmitting a data signal associated with the directional D2D communication at least according to a received state of the pilot signal on the pilot channel resource. Accordingly, a data signal associated with directional D2D communication can be transmitted more effectively according to a directional pilot signal related to the directional D2D communication.

First claim

What is claimed is:

1 . A method, comprising:
acquiring, by a system comprising a processor, information associated with a pilot channel resource used to send at least one directional pilot signal associated with a directional device to device (D2D) communication; and transmitting a data signal associated with the directional D2D communication at least according to a received state of the at least one directional pilot signal on the pilot channel resource.

2 . The method of claim 1 , wherein the transmitting the data signal comprises:
acquiring a transmit power control strategy associated with the directional D2D communication, the transmit power control strategy being determined according to interference on the pilot channel resource caused by a signal associated with the directional D2D communication; and transmitting the data signal at least according to the transmit power control strategy.

3 . The method of claim 1 , wherein the received state is a first received state, wherein the transmitting the data signal comprises:
determining interference on the pilot channel resource caused by a signal associated with the directional D2D communication; and determining at least one target transmit direction associated with the directional D2D communication at least according to interference and a second received state of the at least one directional pilot signal received by the receiver device involved in the directional D2D communication, and wherein the transmitting the data signal at least according to the transmit power control strategy further comprises: transmitting the data signal at least according to the transmit power control strategy and the at least one target transmit direction.

4 . The method of claim 1 , wherein the transmitting the data signal comprises:
acquiring information associated with a resource allocation associated with the directional D2D communication, the resource allocation being determined at least according to interference on the pilot channel resource caused by a signal associated with the directional D2D communication and a second received state of the at least one directional pilot signal received by a receiver device involved in the directional D2D communication, and wherein the transmitting the data signal at least according to the transmit power control strategy further comprises: transmitting the data signal at least according to the transmit power control strategy and the resource allocation.

5 . The method of claim 1 , further comprising:
at least according to the received state of the at least one directional pilot signal on the pilot channel resource, determining an interference on the pilot channel resource caused by a signal associated with the directional D2D communication.

6 . The method of claim 5 , wherein the received state is a first received state, and wherein the determining the interference comprises:
determining a second received state of a pilot signal that was received by a serving cell base station device involved in the directional D2D communication on the pilot channel resource; and determining the interference at least according to the second received state.

7 . The method of claim 5 , wherein the received state is a first received state, and wherein the determining the interference comprises:
determining a second received state of a pilot signal that was received by a neighboring cell base station device involved in the directional D2D communication on the pilot channel resource; and determining the interference at least according to the second received state.

8 . The method of claim 5 , wherein the received state is a first received state, and wherein the determining the interference comprises:
determining a second received state of a first pilot signal that was received by a serving cell base station device involved in the directional D2D communication on the pilot channel resource, and a third received state of a second pilot signal that was received by a neighboring cell base station device involved in the directional D2D communication on the pilot channel resource; and determining the interference at least according to the second received state and the third received state.

9 . The method of claim 6 , wherein the first received state comprises: a first received strength of the at least one directional pilot signal on the pilot channel resource, and
wherein the determining the interference comprises: determining the interference at least according to the first received strength and at least one preset strength threshold.

10 . The method of claim 6 , wherein the first received state comprises: a first received strength of the at least one directional pilot signal on the pilot channel resource and a second received strength of a pilot signal unrelated to the directional D2D communication, and
wherein the determining the interference comprises: determining the interference at least according to the first received strength and the second received strength.

11 . The method of claim 1 , further comprising:
acquiring information associated with the interference on the pilot channel resource caused by a signal associated with the directional D2D communication.

12 . The method of claim 1 , further comprising:
transmitting the at least one directional pilot signal at least on the pilot channel resource.

13 . An apparatus, comprising:
a memory that stores executable modules; and a processor, coupled to the memory, that executes or facilitates execution of the executable modules, the executable modules comprising: a first acquisition module configured to acquire information associated with a pilot channel resource used to send a directional pilot signal associated with a directional device to device (D2D) communication; and a transmitting module configured to transmit a data signal associated with the directional D2D communication at least according to a first received state of the directional pilot signal on the pilot channel resource.

14 . The apparatus of claim 12 , wherein the transmitting module comprises:
a first acquisition unit configured to acquire a transmit power control strategy associated with the directional D2D communication, the transmit power control strategy being determined according to an interference on the pilot channel resource caused by a signal associated with the directional D2D communication; and a transmitting unit configured to transmit the data signal at least according to the transmit power control strategy.

15 . The apparatus of claim 13 , wherein the transmitting module further comprises:
a seventh determination unit configured to determine an interference on the pilot channel resource caused by a signal associated with the directional D2D communication; and an eighth determination unit configured to determine a target transmit direction associated with the directional D2D communication at least according to the interference and a second received state of the directional pilot signal received by the receiver device involved in the directional D2D communication, and wherein the transmitting unit is further configured to transmit the data signal at least according to the transmit power control strategy and the target transmit direction.

16 . The apparatus of claim 13 , wherein the transmitting module further comprises:
a second acquisition unit configured to acquire information associated with a resource allocation associated with the directional D2D communication, the resource allocation being determined at least according to an interfer

Assignees

• Beijing Zhigu Ruituo Tech Co Ltd

Inventors

• Wei Na
• Huang Weicai

Classifications

• H04W72/51

  based on terminal or device properties · CPC title

• H04L5/0023

  Time-frequency-space · CPC title

• H04W52/245

  taking into account received signal strength · CPC title

• H04W52/247

  where the output power of a terminal is based on a path parameter sent by another terminal · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title