Handling Signaling Congestion And Related Communication Device

• US 20120033551A1
• Filed: 08/05/2011
• Published: 02/09/2012
• Est. Priority Date: 08/05/2010
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Liao, Ching-Yu
• Granted Patent: US 9,167,470 B2
• Time in Patent Office: Days
• US Class Current: 370/230
• CPC Class Codes: H04W 28/02 Traffic management, e.g. flow control or congestion control
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 48/06 based on traffic conditions

Abstract

A method of handling signaling congestion for a machine type communication (MTC) device and/or a MTC server in a wireless communication system is disclosed. The method comprises receiving system information from a network; and stopping a triggering operation in a communication window according to the system information, wherein the system information indicates occurrence of a signaling congestion situation in the network.

Claims

1. A method of handling signaling congestion for a communication device in a wireless communication system, the method comprising:

receiving system information from a network; and

stopping a triggering operation in a communication window according to the system information;

wherein the system information indicates occurrence of a signaling congestion or overload situation in the network.

2. The method of claim 1, wherein the system information is broadcast by the network.

3. The method of claim 1 further comprising determining whether to stop the triggering operation in the communication window according to priority of an application included in a machine type communication (MTC) subscription.

4. The method of claim 1, wherein the communication device is at least one of a MTC device and a MTC server.

5. A method of handling signaling congestion for a mobility management entity (MME) or serving GPRS support node (SGSN) in a wireless communication system, the method comprising:

not performing a load rebalancing function on a plurality of machine type communication (MTC) devices; and

performing signaling congestion control.

6. A method of handling signaling congestion for a machine type communication (MTC) device in a wireless communication system, the method comprising:

when a first communication window is considered invalid for the MTC device randomizing a triggering operation at a communication device in a grant time interval to request a second communication window from a network.

7. The method of claim 6, wherein the communication device is at least one of the MTC device and a MTC server.

8. A method of handling signaling congestion for a network in a wireless communication system, the method comprising:

providing a plurality of communication windows for a communication device in a message.

9. The method of claim 8 further comprising clearing the rest of the plurality of communication windows in the network and the communication device when the communication device completes transmission in one of the plurality of communication windows.

10. A method of handling signaling congestion for a communication device in a wireless communication system, the method comprising:

receiving a plurality of communication windows in a message from a network; and

accessing a network in a second communication window when the communication device fail to access the network in a first communication window.

11. The method of claim 10 further comprising aborting accessing the network in the first communication window.

12. The method of claim 10 further comprising receiving an indicator categorized based on severity of a network congestion situation or represented as a back-off timer.

13. The method of claim 12 further comprising determining how many of the plurality of communication windows to abort to access according to the indicator.

14. The method of claim 10, wherein the communication device is at least one of a machine type communication (MTC) device and a MTC server.