METHOD FOR TRANSMITTING SIGNAL IN MACHINE TO MACHINE COMMUNICATION

• US 20120257556A1
• Filed: 02/07/2012
• Published: 10/11/2012
• Est. Priority Date: 02/08/2011
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: JUNG, Soojung, Cha, Jae Sun, Kim, Seokki, Yoon, Chul Sik
• Application Number:
  US13/367,986
• Publication Number:
  US 20120257556A1
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method in which a base station transmits a signal to a plurality of terminals in a machine to machine (M2M) communication system, the method including: allocating an M2M device group ID (MGID) that identifies a terminal group to at least one of the plurality of terminals; and sustaining the MGID when the terminal that belongs to the terminal group is in an idle state.

Claims

1. A method in which a base station transmits a signal to a plurality of terminals in a machine to machine (M2M) communication system, the method comprising:

allocating an M2M device group ID (MGID) that identifies a terminal group to at least one of the plurality of terminals; and

sustaining the MGID when the terminal that belongs to the terminal group is in an idle state.

2. The method of claim 1, further comprising reallocating the MGID to the terminal that belongs to the terminal group when the terminal that belongs to the terminal group is in a connected state or the idle state.

3. The method of claim 1, further comprising updating the MGID.

4. The method of claim 1, further comprising changing the MGID while the terminal that belongs to the terminal group is in a connected state.

5. The method of claim 1, further comprising deleting the MGID while the terminal that belongs to the terminal group is in a connected state.

6. The method of claim 1, further comprising changing the MGID while the terminal that belongs to the terminal group is in the idle state.

7. The method of claim 1, wherein a length of the MGID is the same as a length of an M2M device ID of the terminal.

8. The method of claim 7, the M2M device ID is an assigned identifier which is used to identify the terminal in the connected state.

9. The method of claim 7, the M2M device ID is an assigned identifier which is used to identify the terminal in the idle state.

10. The method of claim 1, further comprising simultaneously transmitting a control message to terminals that belong to the terminal group.

11. The method of claim 10, wherein the control message comprises the MGID.

12. The method of claim 10, wherein the transmitting the same control message is performed in a connected state.

13. A method in which a base station transmits a signal to a plurality of terminals in a machine to machine (M2M) communication system, the method comprising:

allocating an M2M device group ID (MGID) that identifies a terminal group to at least one of the plurality of terminals; and

reallocating the MGID to a terminal that belongs to the terminal group when the terminal that belongs to the terminal group is in a connected state or an idle state.

14. The method of claim 13, wherein a length of the MGID is the same as a length of an M2M device ID of the terminal.

15. The method of claim 14, the M2M device ID is an assigned identifier which is used to identify the terminal in the connected state.

16. The method of claim 14, the M2M device ID is an assigned identifier which is used to identify the terminal in the idle state.

17. The method of claim 13, further comprising simultaneously transmitting a control message to the terminals that belongs to the terminal group.

18. The method of claim 17, wherein the control message comprises the MG ID.

19. The method of claim 17, wherein the transmitting the control message is performed in the connected state.