METHOD FOR TRANSMITTING/RECEIVING CONTROL INFORMATION FOR AN M2M DEVICE, AND DEVICE FOR SAME

• US 20130336278A1
• Filed: 03/08/2012
• Published: 12/19/2013
• Est. Priority Date: 03/08/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Jeongki, Yuk, Youngsoo, Lee, Jin, Park, Giwon, Ryu, Kiseon
• Granted Patent: US 9,113,285 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention relates to a method for transmitting/receiving control information for an M2M device, and a device for same. A method of transmitting Machine to machine (M2M) device control information from a base station in a wireless communication system according to an embodiment of the present invention includes: transmitting a first message including at least one M2M identifier (ID) field to the at least one M2M device; and transmitting at least one second message including resource allocation information for the at least one M2M device to the at least one M2M device. The first and second messages have different types of formats.

Claims

1. A method of transmitting control information for a machine to machine (M2M) device by a base station in a wireless communication system, the method comprising:

transmitting a first message including at least one M2M identifier (ID) field to at least one M2M device; and

transmitting at least one second message including a resource allocation information for the at least one M2M device to the at least one M2M device,

wherein the first and the second message have a format different from each other.

2. The method of claim 1, wherein if the first message comprises a plurality of M2M ID fields, the second message is transmitted to each of M2M devices corresponding to a plurality of the M2M ID fields.

3. The method of claim 1, wherein the first message corresponds to an M2M identifier A-MAP IE message.

4. The method of claim 1, wherein the second message corresponds to a unicast assignment A-Map IE message.

5. A method of receiving control information by a machine to machine (M2M) device in a wireless communication system, the method comprising:

receiving a first message including at least one M2M identifier (ID) field from a base station;

checking whether an ID of the M2M device is contained in the first message; and

if the ID of the M2M device is contained in the first message, receiving a second message including a resource allocation information for the M2M device from the base station,

wherein the first and the second message have a format different from each other.

6. The method of claim 5, wherein checking whether the ID of the M2M device is contained in the first message is performed based on a rest of M2M ID fields except a M2M ID field configured with a pre-defined value in the first message.

7. The method of claim 6, wherein the pre-defined value corresponds to 0.

8. The method of claim 5, wherein at least one of the first and the second message is transmitted in a manner of being CRC (Cyclic Redundancy Check) masked with a M2M group ID.

9. The method of claim 5, wherein the first message further comprises a field for indicating numbers of a M2M ID and wherein the ID of the M2M device is checked whether the ID of the M2M device is contained in the first message based on the indicated numbers of the M2M ID.

10. The method of claim 5, wherein the first message corresponds to a M2M identifier A-MAP IE message.

11. The method of claim 10, wherein the M2M identifier A-MAP IE message corresponds to an extended assignment A-MAP IE type.

12. The method of claim 5, wherein the second message corresponds to a unicast assignment A-MAP IE.

13. A M2M device for receiving control information in a wireless communication system, the M2M device comprising:

a receiver configured to receive a first message including at least one M2M identifier (ID) from a base station; and

a processor configured to check whether the ID of the M2M device is contained in the first message,

wherein if the ID of the M2M device is contained in the first message, the receiver is configured to receive a second message containing a resource allocation information for the M2M device from the base station and wherein the first and the second message have a format different from each other.

14. The M2M device of claim 13, wherein checking whether the ID of the M2M device is contained in the first message is performed based on a rest of M2M ID fields except n M2M ID field configured with a pre-defined value in the first message.

15. The M2M device of claim 13, wherein the first message further comprises a field for indicating numbers of a M2M ID and wherein the processor is configured to check whether the ID of the M2M device is contained in the first message based on the indicated numbers of the M2M ID.