Apparatus and method for mitigating voltage droop in a dual-transceiver wireless communication device

• US 9,167,446 B2
• Filed: 02/21/2013
• Issued: 10/20/2015
• Est. Priority Date: 01/16/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Sikri, Divaydeep, Dhanda, Mungal Singh, Stancer, William, Ngai, Francis Ming-Meng, Walke, Simon
• Primary Examiner(s): MILLER, BRANDON J
• Application Number:
  US13/772,991
• Publication Number:
  US 20140200046A1
• Time in Patent Office: 971 Days
• Field of Search: 455/550.1, 455/552.1, 455/553.1, 455572-574, 455/522
• US Class Current: 1/1
• CPC Class Codes: H04B 1/005 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
• CPC Class Codes: H04B 1/1036 with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters H04B1/123 takes precedence; filter circuits H03H
• CPC Class Codes: H04B 1/109 by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input
• CPC Class Codes: H04B 1/1607 Supply circuits converters H02M; filters therefor H02M1/14; voltage stabilisers G05F1/46
• CPC Class Codes: H04B 1/3816 Mechanical arrangements for accommodating identification devices, e.g. cards or chips; with connectors for programming identification devices
• CPC Class Codes: H04B 1/3838 Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
• CPC Class Codes: H04B 1/525 with means for reducing leakage of transmitter signal into the receiver
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/10 Flow control between communication endpoints
• CPC Class Codes: H04W 52/0209 in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0238 where the received signal is an unwanted signal, e.g. interference or idle signal
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/38 TPC being performed in particular situations
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Aspects of the present disclosure relate to a user equipment (UE) and a method of wireless communication using the UE that includes a first transceiver and a second transceiver. The method includes determining that the first transceiver is scheduled to communicate using a first transmission simultaneous to the second transceiver being scheduled to communicate using a second transmission, and altering an operation of at least one of the first and second transceivers to mitigate battery voltage droop due to simultaneous transmissions of the transceivers. Other aspects, embodiments, and features are also claimed and described.

Claims

1. A method of wireless communication using a user equipment (UE) comprising a battery, a first transceiver and a second transceiver, the method comprising:

determining that the first transceiver is scheduled to communicate using a first transmission simultaneous to the second transceiver being scheduled to communicate using a second transmission;

altering an operation of at least one of the first and second transceivers to mitigate battery voltage droop due to simultaneous transmissions of the transceivers; and

determining the operation to be altered based on a power control matrix per instant of simultaneous transmissions,

wherein the power control matrix comprises operating states of the first and second transceivers during simultaneous transmissions, the operating states comprising an idle state, a circuit-switched (CS) connection state, a packet-switched (PS) connection state, and a dual transfer mode (DTM) connection state.

2. The method of claim 1, wherein the altering the operation of at least one of the first and second transceivers, comprises forgoing a transmission of at least one of the transceivers to reduce specific absorption rate due to simultaneous transmission.

3. The method of claim 1, wherein the altering the operation of at least one of the first and second transceivers, comprises forgoing a transmission of at least one of the transceivers to mitigate overheating of the UE due to simultaneous transmission.

4. The method of claim 1, wherein the altering the operation of at least one of the first and second transceivers comprises altering a transmission of at least one of the transceivers to reduce power of the transmission, to shift the transmission in time, or to forgo the transmission.

5. The method of claim 1, wherein the power control matrix comprises channels to be utilized by the first and second transceivers during simultaneous transmissions, the channels comprise one or more of Random Access Channel (RACH), Traffic Channel (TCH), Slow Associated Control Channel (SACCH), Standalone Dedicated Control Channel (SDCCH), Fast Associated Control Channel (FACCH), Packet Dedicated Channel (PDCH), and Packet Associated Control Channel (PACCH).

6. The method of claim 1, wherein the altering the operation of at least one of the first and second transceivers comprises adjusting respective transmit power of the first and second transceivers to limit their combined transmit power not exceeding a power budget.

7. The method of claim 6, wherein the adjusting respective transmit power comprises adjusting the transmit power of the transceivers based on respective priority of the transceivers and the power budget.

8. The method of claim 7, wherein the adjusting the transmit power of the transceivers comprises allocating respective portions of the power budget to the transceivers based on their priority.

9. An apparatus for wireless communication comprising:

a battery;

a first transceiver and a second transceiver;

means for determining that the first transceiver is scheduled to communicate using a first connection simultaneous to the second transceiver being scheduled to communicate using a second connection;

means for altering an operation of at least one of the first and second transceivers to mitigate battery voltage droop due to simultaneous connections of the transceivers; and

means for determining the operation to be altered based on a power control matrix per instant of simultaneous transmissions,

wherein the power control matrix comprises operating states of the first and second transceivers during simultaneous transmissions, the operating states comprising an idle state, a circuit-switched (CS) connection state, a packet-switched (PS) connection state, and a dual transfer mode (DTM) connection state.

10. The apparatus of claim 9, wherein the means for altering the operation, is configured to forgo a transmission of at least one of the transceivers to reduce specific absorption rate due to simultaneous transmission.

11. The apparatus of claim 9, wherein the means for altering the operation, is configured to forgo a transmission of at least one of the transceivers to mitigate overheating of the apparatus due to simultaneous transmission.

12. The apparatus of claim 9, wherein the means for altering the operation of at least one of the first and second transceivers comprises means for altering a transmission of at least one of the transceivers to reduce power of the transmission, to shift the transmission in time, or to forgo the transmission.

13. The apparatus of claim 9, wherein the power control matrix comprises channels to be utilized by the first and second transceivers during simultaneous transmissions, the channels comprise one or more of Random Access Channel (RACH), Traffic Channel (TCH), Slow Associated Control Channel (SACCH), Standalone Dedicated Control Channel (SDCCH), Fast Associated Control Channel (FACCH), Packet Dedicated Channel (PDCH), and Packet Associated Control Channel (PACCH).

14. The apparatus of claim 9, wherein the means for altering the operation of at least one of the first and second transceivers comprises means for adjusting respective transmit power of the first and second transceivers to limit their combined transmit power not exceeding a power budget.

15. The apparatus of claim 14, wherein the means for adjusting respective transmit power comprises means for adjusting the transmit power of the transceivers based on respective priority of the transceivers and the power budget.

16. The apparatus of claim 15, wherein the means for adjusting the transmit power of the transceivers comprises means for allocating respective portions of the power budget to the transceivers based on their priority.

17. A computer program product, comprising:

a non-transitory computer-readable storage medium comprising code for causing a user equipment (UE) to;

determine that a first transceiver of the UE is scheduled to communicate using a first transmission simultaneous to a second transceiver of the UE being scheduled to communicate using a second transmission;

alter an operation of at least one of the first and second transceivers to mitigate battery voltage droop of a battery of the UE due to simultaneous transmissions of the transceivers; and

determine the operation to be altered based on a power control matrix per instant of simultaneous transmissions,

wherein the power control matrix comprises operating states of the first and second transceivers during simultaneous transmissions, the operating states comprising an idle state, a circuit-switched (CS) connection state, a packet-switched (PS) connection state, and a dual transfer mode (DTM) connection state.

18. The computer program product of claim 17, wherein the code for causing the UE to alter the operation, comprises code for causing the UE to forgo a transmission of at least one of the transceivers to reduce specific absorption rate due to simultaneous transmission.

19. The computer program product of claim 17, wherein the code for causing the UE to alter the operation, comprises code for causing the UE to forgo a transmission of at least one of the transceivers to mitigate overheating of the UE due to simultaneous transmission.

20. The computer program product of claim 17, wherein the code for causing the UE to alter the operation comprises code for causing the UE to alter a transmission of at least one of the transceivers to reduce power of the transmission, to shift the transmission in time, or to forgo the transmission.

21. The computer program product of claim 17, wherein the power control matrix comprises channels to be utilized by the first and second transceivers during simultaneous transmissions, the channels comprise one or more of Random Access Channel (RACH), Traffic Channel (TCH), Slow Associated Control Channel (SACCH), Standalone Dedicated Control Channel (SDCCH), Fast Associated Control Channel (FACCH), Packet Dedicated Channel (PDCH), and Packet Associated Control Channel (PACCH).

22. The computer program product of claim 17, wherein the code for causing the UE to alter the operation comprises code for causing the UE to adjust respective transmit power of the first and second transceivers to limit their combined transmit power not exceeding a power budget.

23. The computer program product of claim 22, wherein the code for causing the UE to adjust respective transmit power comprises code for causing the UE to adjust the transmit power of the transceivers based on respective priority of the transceivers and the power budget.

24. The computer program product of claim 23, wherein the code for causing the UE to adjust the transmit power of the transceivers comprises code for causing the UE to allocate respective portions of the power budget to the transceivers based on their priority.

25. An apparatus for wireless communication, comprising:

a battery;

at least one processor;

a communication interface comprising a first transceiver and a second transceiver both coupled to the at least one processor; and

a memory coupled to the at least one processor,

wherein the at least one processor is configured to;

determine that the first transceiver is scheduled to communicate using a first transmission simultaneous to the second transceiver being scheduled to communicate using a second transmission;

alter an operation of at least one of the first and second transceivers to mitigate battery power droop due to simultaneous transmissions of the transceivers; and

determine the operation to be altered based on a power control matrix per instant of simultaneous transmissions,

wherein the power control matrix comprises operating states of the first and second transceivers during simultaneous transmissions, the operating states comprising an idle state, a circuit-switched (CS) connection state, a packet-switched (PS) connection state, and a dual transfer mode (DTM) connection state.

26. The apparatus of claim 25, wherein the at least one processor is further configured to forgo a transmission of at least one of the transceivers to reduce specific absorption rate due to simultaneous transmission.

27. The apparatus of claim 25, wherein the at least one processor is further configured to forgo a transmission of at least one of the transceivers to mitigate overheating of the apparatus due to simultaneous transmission.

28. The apparatus of claim 25, wherein the at least one processor is further configured to alter a transmission of at least one of the transceivers to reduce power of the transmission, to shift the transmission in time, or to forgo the transmission.

29. The apparatus of claim 25, wherein the power control matrix comprises channels to be utilized by the first and second transceivers during simultaneous transmissions, the channels comprise one or more of Random Access Channel (RACH), Traffic Channel (TCH), Slow Associated Control Channel (SACCH), Standalone Dedicated Control Channel (SDCCH), Fast Associated Control Channel (FACCH), Packet Dedicated Channel (PDCH), and Packet Associated Control Channel (PACCH).

30. The apparatus of claim 25, wherein the at least one processor is further configured to adjust respective transmit power of the first and second transceivers to limit their combined transmit power not exceeding a power budget.

31. The apparatus of claim 30, wherein the at least one processor is further configured to adjust the transmit power of the transceivers based on respective priority of the transceivers and the power budget.

32. The apparatus of claim 31, wherein the at least one processor is further configured to allocate respective portions of the power budget to the transceivers based on their priority.