Wait timer for delay tolerant terminal

• US 9,198,216 B2
• Filed: 01/07/2011
• Issued: 11/24/2015
• Est. Priority Date: 01/07/2011
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Fan, Jianke
• Primary Examiner(s): Khan, Mehmood B
• Application Number:
  US12/986,405
• Publication Number:
  US 20120178436A1
• Time in Patent Office: 1,782 Days
• US Class Current: 1/1
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 76/18 Management of setup rejection or failure

Abstract

The invention provides a method, an apparatus and a computer program for wireless communication. The invention includes setting a wait timer value for a delay tolerant apparatus for wireless communication as a response to an unsuccessful radio resource connection setup procedure, said wait timer delaying the radio resource connection setup procedure and calculating or searching the wait timer value from a table comprising timer data and values corresponding to timer setup information.

Claims

1. A method for setting a wait timer value for a delay tolerant device for wireless communications, the method comprising

receiving, by a receiver of the delay tolerant device from a wireless network, a radio resource control (RRC) Connection Reject message or a RRC Connection Release message that indicates an unsuccessful radio resource connection setup procedure, said received message comprising at least a first timer portion and a second timer portion;

and

calculating, by a processor of the delay tolerant device, the wait timer value for delaying the radio resource connection setup procedure by reading from the first timer portion a first value that maps to a linear series of base wait times, and utilizing the second timer portion to scale the first value non-linearly from the linear series of base wait times; and

setting, by the processor of the delay tolerant device, the wait timer value for the delay tolerant device based on said calculating.

2. The method according to claim 1, wherein the first timer portion is a base wait timer comprising a number of bits sufficient to map to any integer timer value from 1 through 1000, and the second timer portion is an extension wait timer.

3. The method according to claim 1, wherein using the second timer portion to scale the first value non-linearly comprises multiplying the first value by a second value obtained from the second portion.

4. The method according to claim 1, wherein using the second timer portion to scale the first value non-linearly comprises adding the first value to a second value obtained from the second portion.

5. The method according to claim 1, wherein the timer is a T302 timer.

6. The method according to claim 1, wherein the delay tolerant device for wireless communication is a machine type communication (MTC) device, the method further comprising, prior to the receiving:

sending from the MTC device, to the wireless network, a delay tolerant indication that the MTC device is a delay tolerant device.

7. An apparatus for setting a wait timer value for a delay tolerant device for wireless communication, the apparatus comprising:

a receiver configured to receive, from a wireless network, a radio resource control (RRC) Connection Reject message or a RRC Connection Release message that indicates an unsuccessful radio resource connection setup procedure, said received message comprising at least a first timer portion and a second timer portion; and

a processor configured to

calculate the wait timer value for delaying the radio resource connection setup procedure by reading from the first timer portion a first value that maps to a linear series of base wait times, and utilize the second timer portion to scale the first value non-linearly from the linear series of base wait times; and

set the wait timer value for the delay tolerant device based on said calculating.

8. The apparatus for wireless communication according to claim 7, wherein the first timer portion is a base wait timer comprising a number of bits sufficient to map to any integer timer value from 1 through at least 1000, and the second timer portion is an extension wait timer.

9. The apparatus for wireless communication according to claim 7, wherein the processor is configured to use the second timer portion to scale the first value by a second value obtained from the second portion.

10. The apparatus for wireless communication according to claim 7, wherein utilizing the second timer portion to scale the first value non-linearly comprises utilizing the second timer portion to add the first value to a second value obtained from the second portion.

17. The apparatus according to claim 7, wherein the timer is a T302 timer.

18. The apparatus according to claim 7, wherein the device for wireless communication is a machine type communication (MTC) device, the processor configured to further, prior to the receiving:

send from the MTC device, to the wireless network from which the MTC device receives the message, a delay tolerant indication that the MTC device is a delay tolerant device.

11. A computer program product for setting a wait timer value for a delay tolerant device for wireless communications, the computer program product comprising a non-transitory computer-readable medium bearing computer program code embodied therein for use with a computer, the computer program comprising:

code for receiving at the device from a wireless network a radio resource control (RRC) Connection Reject message or a RRC Connection Release message that indicates an unsuccessful radio resource connection setup procedure, said received message comprising at least a first timer portion and a second timer portion; and

code for calculating the wait timer value for delaying the radio resource connection setup procedure by reading from the first timer portion a first value that maps to a linear series of base wait times, and utilizing the second timer portion to scale the first value non-linearly from the linear series of base wait times; and

code for setting the wait timer value for the delay tolerant device based on said calculating.

12. A computer program product comprising the non-transitory computer readable medium according to claim 11, wherein the first timer portion is a base wait timer comprising a number of bits sufficient to map to any integer timer value from 1 through at least 1000, and the second timer portion is an extension wait.

13. The computer program product comprising the non-transitory computer-readable medium according to claim 11, wherein using the second timer portion to scale the first value non-linearly comprises multiplying the first value by a second value obtained from the second portion.

14. The computer program product comprising the non-transitory computer-readable medium according to claim 11, wherein, using the second timer portion to scale the first value non-linearly comprises adding the first value to a second value obtained from the second portion.

15. The computer program product comprising the non-transitory computer-readable medium according to claim 11, wherein the timer is a T302 timer.

16. The computer program product comprising the non-transitory computer-readable medium according to claim 11, wherein the device for wireless communication is a machine type communication (MTC) device, the computer program further comprising, prior to the receiving:

code for sending from the MTC device, to the wireless network from which the MTC device receives the message, a delay tolerant indication that the MTC device is a delay tolerant device.