METHOD AND APPARATUS FOR ACQUIRING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

• US 20160112172A1
• Filed: 06/26/2014
• Published: 04/21/2016
• Est. Priority Date: 06/26/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: SEO, Inkwon, LEE, Seungmin, SEO, Hanbyul
• Granted Patent: US 9,838,181 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0038 Blind format detection for detection of modulation format H04L27/0012
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/0046 Code rate detection or code type detection H04L1/0038 takes precedence; detection of the data rate H04L25/0262; for packet format H04L1/0091
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 76/14 Direct-mode setup

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.

Claims

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,

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.