METHOD AND DEVICE FOR TRIGGERING MACHINE-TYPE COMMUNICATION MTC IN WIRELESS COMMUNICATION SYSTEM

• US 20140307632A1
• Filed: 11/13/2012
• Published: 10/16/2014
• Est. Priority Date: 11/13/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Laeyoung, Kim, Jaehyun, Kim, Taehyeon, Kim, Hyunsook
• Granted Patent: US 9,392,396 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Abstract

The present invention relates to a method for enabling a MTC (machine type communication) IWF (interworking function) to perform a trigger request in a wireless communication system. The method includes transferring, to a first serving node, the trigger request and information related to retrying the trigger request which includes information on whether to retry if the transferring of the trigger request fails, wherein if the information on whether to retry indicates retrying, the retrying of the trigger request is assigned to the first serving node.

Claims

1. A method of performing a MTC (machine type communication) trigger request, which is performed by a MTC-IWF (interworking function) in a wireless communication system, comprising the step of

transmitting the trigger request and information on a retry of the trigger request to a first serving node,

wherein the information on the retry of the trigger request comprises information on whether to perform the retry when transmission of the trigger request fails, and

wherein if the information on whether to perform the retry indicates to perform the retry, the retry of the trigger request is delegated to the first serving node.

2. The method of claim 1, wherein the information on the retry of the trigger request is determined in consideration of at least one selected from the group consisting of the number of available serving node, a congestion status of a network, preference of an MTC user equipment and whether roaming of the MTC user equipment is performed.

3. The method of claim 1, wherein the delegation of the retry of the trigger request means to indicate the first serving node to deliver the trigger request to a second serving node when the delivery of the trigger request fails.

4. The method of claim 3, wherein if the first serving node fails to deliver the trigger request to a user equipment and if the information on whether to perform the retry indicates to perform the retry, the first serving node delivers the trigger request to the second serving node and the second serving node transmits the trigger request to the user equipment.

5. The method of claim 3, wherein the information on the retry of the trigger request further comprises at least one of the number of retry and validity time of the retry.

6. The method of claim 3, wherein the number of available serving node capable of transmitting the trigger request corresponds to at least 2.

7. The method of claim 3, wherein the first serving node and the second serving node respectively correspond to one of an SGSN (serving GPRS (general packet radio service) supporting node), an MME (mobility management entity), and an MSC (mobile switching center).

8. The method of claim 1, wherein if the first serving node fails to deliver the trigger request to a user equipment and if the information on whether to perform the retry indicates not to perform the retry, the MTC-IWF receives a delivery report message indicating a failure of delivering the trigger request from the first serving node.

13. The method of claim 1, further comprising the steps of:

receiving the trigger request from an SCS (service capability server); and

verifying whether the trigger request is valid.

10. The method of claim 9, further comprising the steps of:

transmitting a subscriber notification message, which is transmitted to a HSS (home subscriber server)/a HLR (home location register) by the MCT-IWF to subscribe a user equipment-related information notification service; and

receiving a notification subscriber information message indicating that trigger delivery to the user equipment becomes available from the HSS/HLR,

wherein the notification subscriber information message comprises information on at least one serving node capable of transmitting a trigger to the user equipment.

11. The method of claim 10, further comprising the step of determining a second serving node among the at least one serving node using the notification subscriber information message and transmitting trigger request and information on a retry of the trigger request to the second serving node.

12. The method of claim 10, wherein the information on the at least one serving node comprises an identifier of the at least one serving node.

14. An MTC-IWF (interworking function) device performing an MTC (machine type communication) trigger request in a wireless communication system, comprising:

a transceiving module; and

a processor,

the processor configured to transmit the trigger request and information on a retry of the trigger request to a first serving node,

wherein the information on the retry of the trigger request comprises information on whether to perform the retry when transmission of the trigger request fails and wherein if the information on whether to perform the retry indicates to perform the retry, the retry of the trigger request is delegated to the first serving node.