Method and apparatus for acquiring control information in wireless communication system

Patent metadata

Field	Value
Publication number	US-2016112172-A1
Application number	US-201414892507-A
Country	US
Kind code	A1
Filing date	Jun 26, 2014
Priority date	Jun 26, 2013
Publication date	Apr 21, 2016
Grant date	—

Abstract

A method for acquiring control information by a device-to-device (D2D) terminal in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: determining a resource region in which control information is transmitted on the basis of a D2D occupied bandwidth; and acquiring the control information from the resource region.

First claim

What is claimed is:

1 . A method of obtaining control information, which is obtained by a D2D (device-to-device) user equipment in a wireless communication system, comprising the steps of:
determining a resource region in which the control information is transmitted based on a D2D occupied bandwidth; and obtaining the control information in the resource region.

2 . The method of claim 1 , wherein the step of determining the resource region in which the control information is transmitted, further comprising the steps of:
determining the number of RBs (resource blocks) in which the control information is transmitted and the number of REs in which the control information is transmitted in an RB in which the control information is transmitted based on the D2D occupied bandwidth; and determining a position of an RB in which the control information is transmitted and a position of the RE in which the control information is transmitted in the RB in which the control information is transmitted based on the D2D occupied bandwidth.

3 . The method of claim 2 , wherein the position of the RB in which the control information is transmitted is determined based on the number of RBs configuring the D2D occupied bandwidth and the number of RBs in which the control information is transmitted, which are determined based on the D2D occupied bandwidth.

4 . The method of claim 3 , wherein the position of the RB in which the control information is transmitted is determined based on Equation in the following,

Y
i

=

⌊

M
N

⌋


i

+

⌊

M

2

N

⌋

wherein the M corresponds to the number of RBs configuring the D2D occupied bandwidth, and wherein the N corresponds to the number of RBs in which the control information is transmitted, i=0, . . . , N−1.

5 . The method of claim 2 , wherein the position of the RE in which the control information is transmitted is determined based on the number of REs in which the control information is transmitted, which are determined based on the D2D occupied bandwidth.

6 . The method of claim 5 , wherein the position of the RE in which the control information is transmitted is determined according to an RE set corresponding to the number of REs in which the control information is transmitted and wherein a position of an RE in which control information is transmitted is determined in advance in an RB of the RE set.

7 . The method of claim 6 , wherein if there is no RE set corresponding to the number of REs in which the control information is transmitted, the position of the RE in which the control information is transmitted is determined by a combination of at least two or more RE sets.

8 . The method of claim 7 , wherein the position of the RE in which the control information is transmitted is not overlapped with each other in the at least two or more RE sets.

9 . The method of claim 2 , wherein the position of the RE in which the control information is transmitted is positioned on an OFDM symbol adjacent to an OFDM symbol which is allocated to a demodulation reference signal in the RE set.

10 . The method of claim 1 , wherein a position of an RE in which the control information is transmitted is determined by an index assigned to the RE in an RB.

11 . The method of claim 10 , wherein a lowest index among the index is positioned on an OFDM symbol adjacent to an OFDM symbol assigned to a demodulation reference signal.

12 . The method of claim 1 , wherein the D2D occupied bandwidth is signaled by one of a base station and a cluster head user equipment.

13 . A D2D (device-to-device) user equipment in a wireless communication system, comprising:
a reception module; and a processor, the processor configured to determine a resource region in which control information is transmitted and obtain the control information in the resource region based on a D2D occupied bandwidth.

Assignees

• Lg Electronics Inc

Inventors

• Seo Inkwon
• Lee Seungmin
• Seo Hanbyul

Classifications

• H04L5/0053 Primary

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04W76/023

  Electricity · mapped topic

• H04L5/0007

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

• H04W4/70

  Services for machine-to-machine communication [M2M] or machine type communication [MTC] · CPC title

• H04W72/04

  Wireless resource allocation · CPC title