Method and apparatus for transmitting data in direct device-to-device communication

Patent metadata

Field	Value
Publication number	US-2016381670-A1
Application number	US-201615190840-A
Country	US
Kind code	A1
Filing date	Jun 23, 2016
Priority date	Jun 23, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

A method and an apparatus for transmitting data in communication between terminals are provided. A terminal disposes at least one first reference signal configured based on a first parameter. The terminal disposes at least one second reference signal configured based on a second parameter, in addition to the first reference signal configured based on a first parameter. Data of a first structure in which the first reference signal is included or data of a second structure in which the first reference signal and the second reference signal are included is transmitted.

First claim

What is claimed is:

1 . A method for transmitting data in communication between terminals, the method comprising:
disposing at least one first reference signal configured based on a first parameter; disposing at least one second reference signal configured based on a second parameter, in addition to the first reference signal configured based on a first parameter; and transmitting data of a first structure in which the first reference signal is included or data of a second structure in which the first reference signal and the second reference signal are included.

2 . The method of claim 1 , wherein the first reference signal is configured based on scrambling using an identification (ID) of a terminal, the second reference signal is configured based on common sequence, and the data is transmitted through a Physical Sidelink Shared Channel (PSSCH).

3 . The method of claim 1 , wherein the transmitting of data comprises transmitting the data of the first structure or the data of the second structure according to at least one among movement speed and a Modulation Coding Scheme (MCS).

4 . The method of claim 3 , wherein the transmitting of data comprises:
transmitting the data of the first structure when the movement speed is slower than a predetermined speed; and transmitting the data of the second structure when the movement speed is faster than a predetermined speed.

5 . The method of claim 1 , wherein the transmitting of data comprises transmitting one among the data of the first structure and the data of the second structure every transmission time, wherein
a transmission order including an order for transmitting the data of the first structure and an order for transmitting the data of the second structure is provided from a base station.

6 . The method of claim 5 , wherein the transmitting of data comprises iteratively transmitting the data having been transmitted,
wherein a transmission time at which the data of the first structure is transmitted and a transmission time at which the data of the second structure is transmitted are adjusted by the base station, and the order for transmitting the data of the first structure and the order for transmitting the data of the second structure are adjusted by the base station.

7 . The method of claim 6 , further comprising
transmitting, by a terminal, information for determining the transmission time to the base station, wherein the transmission time is determined based on at least one among movement speed of the terminal and number of receptions, and the transmission time is determined based on the ID of the terminal and an Acknowledgment/Negative acknowledgement (ACK/NACK) representing whether or not data is successfully restored as well as the number of receptions when the transmission time is determined based on the number of receptions.

8 . The method of claim 7 , wherein the transmitting of information comprises transmitting a message including the ID of the terminal and the number of receptions to the base station if whether or not data is successfully restored is the NACK when a size of a message including the information is greater than a predetermined size.

9 . The method of claim 7 , wherein the transmission order is adjusted so that data received once between terminals communicating with each other is the data of the second structure, and
the transmission time is adjusted when a relative speed difference is greater than a predetermined reference value so that terminals communicating with each other receive data transmitted from an opponent terminal two or more times.

10 . A terminal for transmitting data in communication between terminals, the terminal comprising:
a radio frequency converter transmitting and receiving a signal through an antenna; and a processor that is connected to the radio frequency converter and is configured to perform processing for data transmission, wherein the processor includes a data transmission processing unit configured to transmit data of a first structure in which at least one first reference signal configured based on a first parameter is disposed or data of a second structure in which at least one second reference signal configured based on a second parameter is further disposed in addition to the first reference signal configured based on a first parameter.

11 . The terminal of claim 10 , wherein the first reference signal is configured based on scrambling using an identification (ID) of a terminal and the second reference signal is configured based on a common sequence,
wherein the data transmission processing unit is configured to transmit the data of the first structure or the data of the second structure according to at least one among movement speed and a Modulation Coding Scheme (MCS).

12 . The terminal of claim 10 , wherein the data transmission processing unit is configured to transmit one among the data of the first structure and the data of the second structure every transmission time,
wherein the processor further comprises a transmission information acquisition processing unit configured to provide a transmission order including an order for transmitting the data of the first structure and an order for transmitting the data of the second structure that are provided from a base station.

13 . The terminal of claim 12 , wherein the data transmission processing unit is configured to iteratively transmit the data having been transmitted,
wherein a transmission time at which the data of the first structure is transmitted and a transmission time at which the data of the second structure is transmitted are adjusted by the base station, and the order for transmitting the data of the first structure and the order for transmitting the data of the second structure are adjusted by the base station.

14 . The terminal of claim 12 , wherein the processor further comprises
a terminal information provision processing unit configured to provide information for determining the transmission time to the base station, wherein the terminal information provision processing unit is configured to provide at least one among movement speed of the terminal and number of receptions to the base station, and further provide the ID of the terminal and an Acknowledgment/Negative acknowledgement (ACK/NACK) representing whether or not data is successfully restored when transmitting the number of receptions.

15 . A method for determining information for data transmission of a terminal in communication between terminals, the method comprising:
determining, by a base station, an order for transmitting data of a first structure in which at least one first reference signal configured based on a first parameter is disposed; determining, by the base station, an order for transmitting data of a second structure in which at least one second reference signal configured based on a second parameter is further disposed in addition to the first reference signal; and transmitting, by the base station, a transmission order including an order for transmitting the data of the first structure and an order for transmitting the data of the second structure.

16 . The method of claim 15 , wherein the first reference signal is configured based on scrambling using an identification (ID) of a terminal, and the second reference signal is configured based on a common sequence,
wherein the order for transmitting the data of the first structure and the order for transmitting the data of the second structure are changed according to at least one among movement speed and a Modulation Coding Scheme (MCS

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Kim Ji Hyung
• Shin Jaesheung

Classifications

• H04L5/0055 Primary

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L5/0064 Primary

  Rate requirement of the data, e.g. scalable bandwidth, data priority · CPC title

• H04L5/0044

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title