System and method for dropping and adding an air interface in a wireless communication system

• US 9,313,791 B2
• Filed: 05/06/2010
• Issued: 04/12/2016
• Est. Priority Date: 05/14/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Hu, Jun, Lin, Yu-Chuan, Shahidi, Reza, Mahajan, Amit, George, Brian M.
• Primary Examiner(s): Daniel, Jr., Willie J
• Application Number:
  US12/775,407
• Publication Number:
  US 20100291966A1
• Time in Patent Office: 2,168 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0026 Division using four or more dimensions
• CPC Class Codes: H04L 5/0028 Variable division signaling therefor H04L5/0092
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0058 Allocation criteria
• CPC Class Codes: H04W 52/346 distributing total power among users or channels
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A device and method for dropping an air interface is disclosed. In one embodiment, the method comprises communicating over a first air interface and a second air interface, determining an operational parameter based at least in part on a characteristic of the first air interface, and dropping the second air interface based at least in part on the operational parameter. A device and method for adding an air interface is also disclosed. In one embodiment, the system comprises a processor configured to drop one of a plurality of concurrently established air interfaces and to subsequently determine that at least one predetermined criteria is met before attempting to add the air interface.

Claims

1. A method of dropping an air interface, the method comprising:

concurrently communicating over a first air interface and a second air interface;

determining whether a violation of a power constraint indicative of a power imbalance has occurred by;

measuring a receive power of the first air interface and a receive power of the second air interface;

determining a difference between the measured receive power of the first air interface and the measured receive power of the second air interface, and

determining whether a value of the determined difference is greater than a predefined threshold, indicating the power imbalance;

determining whether the second air interface is in an idle state if the power constraint is violated; and

dropping the second air interface, if it is determined that the power constraint is violated and the second air interface is in the idle state.

2. The method of claim 1, wherein the first air interface supports voice traffic and the second air interface supports data traffic.

3. The method of claim 1, wherein the first air interface is a 1x interface and the second air interface is a DO interface.

4. The method of claim 1, wherein concurrently communicating over the first air interface and the second air interface comprises communicating over the first air interface at a first frequency and communicating over the second air interface at a second frequency.

5. The method of claim 1, wherein dropping the second air interface comprises switching to a narrowband mode.

6. A device for dropping an air interface, the system comprising:

a transceiver configured to concurrently communicate over a first air interface and a second air interface; and

a processor configured to determine;

whether a violation of a power constraint indicative of a power imbalance has occurred by;

measuring a receive power of the first air interface and a receive power of the second air interface;

determining a difference between the measured receive power of the first air interface and the measured receive power of the second air interface, and

determining whether a value of the determined difference is greater than a predefined threshold, indicating the power imbalance; and

whether the second air interface is in an idle state if the power constraint is violated;

wherein the processor is configured to provide an instruction to the transceiver to drop the second air interface if it is determined that the power constraint is violated and the second air interface is in the idle state.

7. The device of claim 6, wherein the transceiver comprises a first transceiver configured to communicate over the first air interface and a second transceiver configured to communicate over the second air interface.

8. The device of claim 6, wherein the first air interface supports voice traffic and the second air interface supports data traffic.

9. The device of claim 6, wherein the first air interface is a 1x interface and the second air interface is a DO interface.

10. The device of claim 6, wherein the transceiver is configured to communicate over the first air interface at a first frequency and communicate over the second air interface at a second frequency.

11. The device of claim 6, wherein the processor is further configured to switch to a narrowband mode.

12. A device for dropping an air interface, the device comprising:

means for concurrently communicating over a first air interface and a second air interface;

means for determining whether a violation of a power constraint indicative of a power imbalance has occurred by;

measuring a receive power of the first air interface and a receive power of the second air interface;

determining a difference between the two measurements, and

determining whether a value of the difference is greater than a predefined threshold, indicating the power imbalance;

means for determining whether the second air interface is in an idle state if the power constraint is violated; and

means for dropping the second air interface, if it is determined that the power constraint is violated, and if it is determined that the second air interface is in the idle state.

13. The device of claim 12, wherein the first air interface supports voice traffic and the second air interface supports data traffic.

14. The device of claim 12, wherein the first air interface is a 1x interface and the second air interface is a DO interface.

15. The device of claim 12, wherein the means for concurrently communicating over the first air interface and the second air interface comprise means for communicating over the first air interface at a first frequency and communicating over the second air interface at a second frequency.

16. The device of claim 12, wherein the means for dropping the second air interface comprise means for switching to a narrowband mode.

17. A computer chip encoded with instructions for executing a method of dropping an air interface, the method comprising:

concurrently communicating over a first air interface and a second air interface;

determining whether a violation of a power constraint indicative of a power imbalance has occurred by;

measuring a receive power of the first air interface and a receive power of the second air interface;

determining a difference between the measured receive power of the first air interface and the measured receive power of the second air interface, and

determining whether a value of the determined difference is greater than a predefined threshold, indicating the power imbalance;

determining whether the second air interface is in an idle state if the power constraint is violated; and

dropping the second air interface, if it is determined that the power constraint is violated and the second air interface is in the idle state.

18. The computer chip of claim 17, wherein the first air interface supports voice traffic and the second air interface supports data traffic.

19. The computer chip of claim 17, wherein the first air interface is a 1x interface and the second air interface is a DO interface.

20. The computer chip of claim 17, wherein concurrently communicating over the first air interface and the second air interface comprises communicating over the first air interface at a first frequency and communicating over the second air interface at a second frequency.

21. The computer chip of claim 17, wherein dropping the second air interface comprises switching to a narrowband mode.